RABIN-GREENBERG DERMATOLOGY - Key Persons


Annette O. Harris

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
Annette Harris, MD, is a native Houstonian and has been practicing dermatology since 1993. After graduating from Dartmouth College magna cum laude with a Bachelor of Arts in art history, she obtained her medical degree from Baylor College of Medicine. She went on to complete her post-graduate training in dermatology at Baylor College of Medicine. Dr. Annette Harris is board certified by the American Board of Dermatology and a Fellow of the American Academy of Dermatology. Her professional memberships include the Houston Dermatological Society, the Texas Dermatological Society, the American Academy of Dermatology, and the Harris County Medical Society. In her spare time, Dr. Harris enjoys spending time with her husband and son. She also enjoys cooking, hiking, rock climbing, traveling, skiing, and reading. Annette Harris, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Aubrey Chad Hartmann

Dr. Hartmann is an active member of many local and national organizations to include the Austin Dermatological Society (past President), Texas Dermatological Society (Secretary/Treasurer), Dermatology Foundation Leaders Society, American Academy of Dermatology, American Society for Dermatologic Surgery, Travis County Medical Society, Texas Medical Association (Interspecialty Society Delegate), and the American Medical Association.

Brian Bernholtz - CFO

Job Titles:
  • Chief Financial Officer
  • Member of the Executive Leadership Team

Daniel P. Bortnick

Dr. Bortnick was the founding partner of Monarch Plastic Surgery, established in 1995. His principal practice concentrates on cosmetic and aesthetic surgery of the face and body. He has developed a reputation as a local and regional expert in body contouring and cosmetic nasal surgery and serves as the residency coordinator for cosmetic plastic surgery at The University of Kansas Medical Center.

Dr. Alexandra Theriault

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
Dr. Alexandra Theriault graduated manga cum laude from The University of Texas at Austin. She attended medical school at The University of Texas at Houston and was selected as a member of Alpha Omega Alpha Medical Honor Society. She completed her Dermatology residency at the University of Colorado. Dr. Alexandra Theriault became board certified in Dermatology in 2000. She serves as an Assistant Clinical Professor at The University of Colorado and is currently on the teaching facility of Medical Education Resources. She also mentors medical students at the CU Health Science Center as a preceptor, and as a volunteer faculty teaching University of Colorado dermatology residents on Cosmetic Injection Techniques. Drawn to Dermatology because it is a mentally challenging field, Dr. Alexandra Theriault finds it very rewarding to diagnose a tough case and implement promising treatment options. She especially enjoys treating autoimmune skin diseases, such as psoriasis cutaneous lupus and pemphigus. Apex Dermatology, now a part of U.S. Dermatology Partners, is involved in clinical research, enabling our patients to receive the most cutting edge treatments available. Dr. Alexandra Theriault enjoys the personal relationships that have developed from treating families that she has been lucky enough to care for over her 16-year career. Her philosophy is to treat her patients with compassion and respect, explain the disease process, and involve her patients in the healing process. Dr. Alexandra Theriault also finds reward in the cosmetic side of dermatology. "I believe that my background in art serves as a good foundation for performing cosmetic procedures as many of them are sculptural. We do not aim to change the patient's appearance; rather, we are looking to enhance it." During her free time, Dr. Alexandra Theriault enjoys skiing, running, hiking, playing the guitar, and enjoying time with her husband and two children. In the community, she participates in free skin cancer screenings and is involved in philanthropy for children's programs for those at risk, programs that support the Arts in Colorado, and programs that aid the homeless population in Denver. Alexandra Theriault, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Dr. Allyson Kopel

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
  • Fellow of the American Academy of Dermatology
Dr. Allyson Kopel is a Board-Certified Dermatologist and a Fellow of the American Academy of Dermatology. She is also a member of the Houston Dermatological Society and the Texas Dermatological Society. Dr. Kopel graduated magna cum laude with a Bachelor of Arts degree in Psychology from Vanderbilt University. She earned her medical degree from the University of Texas at Houston Medical School where she was elected as a member of the Alpha Omega Alpha Honor Society in her third year. After a transitional year internship at St. Joseph's Hospital in Houston, she completed her post-graduate training at Louisiana State University School of Medicine in New Orleans. After Hurricane Katrina, she relocated back to Houston and began a private practice in 2006. Dr. Kopel treats patients with a wide range of medical and cosmetic concerns. Her clinical interests include acne, diagnosis and treatment of skin cancer, and the treatment of inflammatory skin conditions including eczema and psoriasis. She is proficient in Spanish, having grown up near the border in El Paso, Texas. Dr. Kopel is happily married with three children. In her spare time, she enjoys playing tennis, cooking, exercising, traveling, and reading. Allyson Kopel, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Dr. Amy Wood

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
  • Member of the American Academy of Dermatology
Dr. Amy Wood earned her undergraduate in biology from Rice University prior to obtaining her Doctorate of Medicine from Temple University in Philadelphia. She completed her internal medicine internship at the University of Texas - Houston Medical School and dermatology residency at Baylor College of Medicine in Houston. Dr. Wood is a proud member of the American Academy of Dermatology. She has been recognized as one of Houston's top doctors in H Texas magazine (2005). Dr. Wood provides care in the Houston area at our offices in Bellaire and Kingwood. Amy Wood, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Dr. Cindy Greenberg

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
  • Member of the American Academy of Dermatology
Dr. Cindy Greenberg graduated magna cum laude from Duke University with a BS in psychology. She earned her Doctorate of Medicine from the University of Miami School of Medicine and completed her internal medicine internship at New York University. Dr. Cindy Greenberg then went to complete her dermatology residency and dermatopathology fellowship at Baylor College of Medicine in Houston. Dr. Cindy Greenberg is a proud member of the American Academy of Dermatology, Texas Medical Association, Harris County Medical Society, and the Houston Dermatological Society. She has been recognized as one of Houston's top doctors in H Texas magazine (2005). Dr. Cindy Greenberg provides care at U.S. Dermatology Partners Kingwood, formerly Rabin-Greenberg Dermatology, in Kingwood, Texas. Cindy Greenberg, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Dr. John Wofford

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
John Wofford, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Dr. Katherine Bell

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
  • Member of the American Academy of Dermatology
Dr. Katherine Bell earned her undergraduate degree in human biology from Stanford University prior to obtaining her Doctorate of Medicine from the University of Miami Miller School of Medicine in Miami. Dr. Bell completed her internal medicine internship and dermatology residency at Baylor College of Medicine in Houston. When choosing a specialty, Dr. Katherine Bell knew right away that dermatology was the perfect fit. She enjoys seeing patients of all ages and offers a broad range of services spanning from medical, surgical, and cosmetic dermatology. She is particularly interested in the art of surgical procedures and improving one's appearance with cosmetic injectables and lasers. What Dr. Bell enjoys most about dermatology is the ability to stand at the forefront of evolving technology, which allows her to use new concepts, new medications and new innovations to help improve her patients' quality of life. Dr. Bell is a proud member of the American Academy of Dermatology, Texas Medical Association, Harris County Medical Society, and the Houston Dermatological Society. She has been recognized as one of Houston's top doctors in H Texas magazine (2015), featured as one of Houston's top doctors in Houstonia magazine (2013, 2014, 2015, and 2016), named Houston's Top Dermatologist in Top Doctor (2020), and featured in Best in Texas Magazine (2022). In her free time, Dr. Bell enjoys going to the theater, playing piano, and spending quality time with her husband and children. Dr. Bell provides care at U.S. Dermatology Partners Bellaire and U.S. Dermatology Partners Kingwood, formerly Rabin-Greenberg Dermatology. Katherine Bell, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Dr. Kathryn "Celeste" Durham

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
Dr. Kathryn "Celeste" Durham graduated summa cum laude from Texas Tech University with a Bachelor of Science in biology. She earned her Doctorate of Medicine at the University of Texas Medical School at Houston. As a medical student, Dr. Durham received a summer research grant from the National Institutes of Health. After medical school, she completed her internal medicine internship at Baylor College of Medicine in Houston, and was a clinical research fellow under Dr. Adelaide Hebert at the University of Texas Medical School at Houston. She completed her dermatology residency at the University of Texas Medical School at Houston, serving as chief resident her final year. Dr. Durham has a strong research background with experience in more than a dozen studies. She has published in a number of journals, including the prestigious Journal of American Academy of Dermatology for pediatric dermatology. Dr. Durham enjoys working with patients of all ages. Her clinical interests include atopic dermatitis, psoriasis, acne and skin cancer. Dr. Durham is passionate and dedicated to helping her patients improve their quality of life with great skin care. She treats patients at our Fort Worth Hulen office. A native of Lubbock, Texas, Dr. Durham she has lived all over the state of Texas. She is thrilled to reside in friendly Fort Worth near her husband's family where they and their daughter enjoy outdoor activities, movies, and caring for their rescue dogs. Kathryn Durham, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Dr. Michael Haag

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
Dr. Michael Haag has over 15 years of clinical experience. He received his medical degree from the University of Nebraska College of Medicine. He completed an internship and residency in internal medicine at the University of Missouri - Columbia before going on to complete a residency in dermatology at the University of South Florida. Dr. Haag began his career as a clinical dermatologist in 1994 in Overland Park, Kansas, and later went into private in Lenexa, Kansas. He joined U.S. Dermatology Partners in the summer of 2015. Dr. Michael Haag is a diplomate of the American Board of Dermatology and a fellow of the America Academy of Dermatology. In addition to his interest in skin cancer prevention and treatment, he has a special interest in the topical and systemic effects of drugs and products as they pertain to long-term health and the prevention of aging. Michael Haag, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Dr. Sindy Pang

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
Dr. Sindy Pang grew up in Ames, Iowa. She graduated magna cum laude from Brown University and received her medical degree from the University of Iowa. Dr. Pang completed her Dermatology Residency at the University of Texas Health Science Center and MD Anderson Cancer Center. She served as Chief Resident during her final year of residency. Dr. Sindy Pang is board-certified by the American Board of Dermatology. She is a member of the American Academy of Dermatology, Houston Dermatological Society, Harris County Medical Society, and the Texas Medical Association. Dr. Pang practices general and cosmetic dermatology. She believes in treating every patient as a unique individual and customizing their skin care regimen. She enjoys educating her patients about good skin care and strives to help everyone look their very best. Dr. Sindy Pang enjoys spending time with her husband and four children in her free time. Sindy Pang, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Fellowship-Trained Mohs

Job Titles:
  • Surgeon

Gail R. Goldstein

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
Dr. Gail Goldstein was born in California and grew up in Vienna, Virginia. She matriculated at The University of Virginia, where she was an Echols Scholar. She stayed at UVA where she obtained a master's degree in Medical Ethics. She then attended medical school at New York University, where she graduated with honors in molecular and cellular biology. Dr. Gail Goldstein completed her medical training in dermatology at the University of Maryland and then joined the Annapolis Dermatology Center. Dr. Gail Goldstein practices both general and cosmetic dermatology and has lectured on subjects such as dermatological diseases of pregnancy, skin cancer prevention, the ethics of cosmetic surgery and medical volunteerism. Dr. Gail Goldstein has three wonderful daughters, Lena, Mimi, and Julia. Her husband Andrew is a gynecologist. Dr. Gail Goldstein recently returned from a year of medical volunteering in South America and Southeast Asia with her family. Dr. Goldstein is the recipient of What's Up Annapolis Top Doctor and Chesapeake Family's Favorite Docs for Dermatology. Gail Goldstein, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Glenn D. Goldstein

Job Titles:
  • Chief Medical Officer
  • Member of the Regional Physician Leadership Team
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
  • Certified Fellow of the American College of Mohs Micrographic Surgery
Dr. Glenn Goldstein, a board-certified dermatologist and diplomate of the American Board of Dermatology, is the director of U.S. Dermatology Partners in Leawood, Kansas. Dr. Goldstein has been in practice in Kansas City for over 28 years. His training in internal medicine and dermatology was at the University of Kansas Medical Center. He subsequently completed his Mohs and dermatologic surgery fellowship at the University of Iowa Hospitals and Clinics. Dr. Glenn Goldstein is a board-certified fellow of the American College of Mohs Micrographic Surgery and Cutaneous Oncology. His practice is distinguished by being one of the few certified training sites for Mohs surgery in the country. Dr. Goldstein is the past president of the American Cancer Society and the Kansas City Dermatological Society. He is currently a Clinical Associate Professor of Medicine in the Department of Medicine at the KU Medical Center. He is the author of over 40 medical publications. Glenn Goldstein, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Howard J. Luber

Job Titles:
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
Dr. Howard Luber founded Southwest Skin Specialists in 1989 with the goal of providing the best dermatologic health care in the Phoenix, Arizona, community. Today, the practice continues to flourish because every physician and staff member at Southwest Skin Specialists shares his commitment to this goal. After attaining his undergraduate degree at Yale University in 1978, Dr. Howard Luber earned his medical degree from the University of Wisconsin in 1982. His postgraduate training included an internship and residency in internal medicine at Cedars-Sinai Medical Center in Los Angeles and a dermatology residency at the University of Cincinnati. Dr. Howard Luber practices general dermatology with particular interests in skin cancer and the cutaneous manifestations of internal diseases. Dr. Howard Luber is an associate professor of medicine at Creighton University School of Medicine. Dr. Howard Luber provides care at our Scottsdale, Phoenix Biltmore, and Phoenix Tatum Blvd. offices. Howard Luber, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Jeanne Cunningham - CMO

Job Titles:
  • Chief Marketing Officer
  • Member of the Executive Leadership Team

Jennifer D. Holman

Job Titles:
  • Member of the Regional Physician Leadership Team
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
  • East & South Texas
Dr. Jennifer Holman received her Doctor of Medicine from the University of Oklahoma College of Medicine in 2004, graduating with special academic distinction. During her residency in the Department of Dermatology at the University of Missouri, she was awarded a Women's Dermatologic Society mentorship grant to work with the pediatric dermatology department at Northwestern University in Chicago, Illinois. Excelling in every opportunity afforded, she was chief resident in the Department of Dermatology at the University of Missouri when hired by U.S. Dermatology Partners. "I chose to practice dermatology because a person's skin is their ‘first impression' upon the world around them. To improve a patient's self-esteem, to relieve their fears, or to restore a peaceful night's rest by treating a skin condition, gives me the opportunity to help restore balance and peace of mind in their life," Dr. Holman says. She credits her father with instilling in her the idea that "a merry heart does good like medicine," and she approaches each day with the attitude that a smile and kindness are often as important as any prescription. Combined with her excellent training and experience, the treatment you receive from Dr. Holman is advanced skin care for your health. Your heart. Your life. Dr. Holman is dually board-certified as a dermatologist and as a Dermatologic Micrographic Surgeon who performs Mohs surgery and delivers advanced and comprehensive care for skin cancer. She also performs multiple cosmetic procedures at Tyler's Center for Aesthetic and Laser Medicine, which she founded in 2018. There, she and her team provide the full array of laser resurfacing procedures including the sought after BBL, Moxi, and Halo lasers. She is an expert in injectable neurotoxin (Botox), fillers, and PRP, and is a trainer for multiple aesthetic companies. In addition, Dr. Holman serves as regional president over U.S. Dermatology Partners offices in East Texas, South Texas, and Oklahoma. Jennifer Holman, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Justin Tilley - Chief Legal Officer

Job Titles:
  • Chief Legal Officer
  • Member of the Executive Leadership Team

Liz Gifford - Chief Compliance Officer

Job Titles:
  • Chief Compliance Officer
  • Member of the Executive Leadership Team

Mark H. Fleischman

Job Titles:
  • Member of the Regional Physician Leadership Team
  • Accepts Most Major Insurance Plans. If Your Plan Is Not Listed above, Please Contact the Office to Verify Coverage
  • Fellow of the American College of Mohs Surgery
Dr. Mark Fleischman is a fellow of the American College of Mohs Surgery. He has earned numerous scholarships, awards, and honors including Alpha Omega Alpha and Phi Beta Kappa. Each year since 2010, Dr. Fleischman has been named by his peers as a Super Doctor of Kansas City, recognized by Kansas City Magazine (435 Magazine) or as a Castle Connolly Top Doctor. Most recently, Dr. Fleischman was selected as one of Kansas City's Top Doctors and featured on the cover of the October 2021 Ingram's magazine special Medical Edition honoring the region's best health care providers. He is a past president of the Kansas City Dermatological Society and a current fellow of the American Academy of Dermatology. Dr. Fleischman specializes in skin cancer treatment and diagnosis, Mohs micrographic surgery, and facial reconstruction. Mark Fleischman, MD accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.

Nail Fungal Infections

Job Titles:
  • Online Dermatologist

Paul Singh - CEO

Job Titles:
  • Chief Executive Officer
  • Member of the Executive Leadership Team

Taylor Enabnit - COO

Job Titles:
  • Chief Operating Officer
  • Member of the Executive Leadership Team