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Internal Medicine in Gaithersburg, Maryland

Data updated monthly · Last refresh September 2026

64 Internal Medicine providers practice in Gaithersburg, and 31% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in Gaithersburg

Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Abraham Alex, DO
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4021
Dr. Alan Vinitsky, M.D
Gaithersburg, MD · $113 in drug and device payments (2025) · (301) 840-0002
Dr. Amitosh Singh
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4021
Dr. Ann Raffo, MD
Gaithersburg, MD · $277 in drug and device payments (2025) · Telehealth · (301) 948-8780
Dr. Anurita Mendhiratta, MD
Gaithersburg, MD · $245 in drug and device payments (2025) · (301) 987-7250
Dr. Arianna Vessal, DO
Gaithersburg, MD · $17 in drug and device payments (2025) · (240) 632-4000
Dr. Ashly Kaur, DO
Gaithersburg, MD · $33 in drug and device payments (2025) · (240) 632-4021
Dr. Attan Kasid, MD
Gaithersburg, MD · $143 in drug and device payments (2025) · (301) 990-8800
Dr. Baolang Liao, M.D.
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 926-9088
Dr. Brian Shen, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 258-7245
Dr. Changting Haudenschild, M.D.
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 393-5950
Dr. Chris Park, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4000
Dr. Crystal Xue
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4021
Dr. Daniel Tadeo, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4000
Dr. Diane Mukherjee, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 773-0300
Dr. Georges Benjamin, M.D.
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 963-5822
Dr. Grace Sagayadan, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 330-2664
Dr. Haizia Amsler, M.D.
Gaithersburg, MD · No drug or device payments recorded (2025) · Telehealth · (301) 557-2110
Dr. Hamdi Abdeen
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 306-5408
Dr. Inna Sverdlova, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 813-8740
Dr. James Duffy, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 773-0300
Dr. Jean Hou, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4000
Dr. Jeffrey Wharton, M.D.
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 633-4000
Dr. John Melnick, M. D.
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 258-0944
Dr. Jose De Leon Carpio, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4000
Dr. Joseph Mcclain, M.D.
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 848-8790
Dr. Joseph Toerner, MD
Gaithersburg, MD · $36,421 in drug and device payments (2025) · (240) 773-0300
Dr. Kamala Foster, M.D.
Gaithersburg, MD · $1,734 in drug and device payments (2025) · Telehealth · (301) 330-3541
Dr. Kathleen Adeshoga
Gaithersburg, MD · $99 in drug and device payments (2025) · Telehealth · (240) 813-8740
Dr. Kathleen Farrell, M.D.
Gaithersburg, MD · $284 in drug and device payments (2025) · Telehealth · (301) 948-8780
Dr. Katrina Hsieh, DO
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4021
Dr. Kshama Garg, M.D.
Gaithersburg, MD · $607 in drug and device payments (2025) · Telehealth · (404) 998-5662
Dr. Leszek Karowiec, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 258-7265
Dr. Lingling Gao, D.O.
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4000
Dr. Madhavi Hubbly, M.D
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 528-4134
Dr. Mahpara Qureshi, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · Telehealth · (301) 515-2901
Dr. Marlene Hayman, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 258-7265
Dr. Mary Kilavos, M.D.
Gaithersburg, MD · $26 in drug and device payments (2025) · Telehealth · (301) 948-8780
Dr. Mary Warfield, M.D.
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 869-0700
Dr. Meaza Selassie, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 632-4000
Dr. Meera Dagli, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (301) 591-5858
Dr. Michelle Tan, MD
Gaithersburg, MD · $172 in drug and device payments (2025) · (301) 208-1188
Dr. Miranda Hunter, MD
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 813-8740
Dr. Nadia Smati, MBBS
Gaithersburg, MD · No drug or device payments recorded (2025) · Telehealth · (240) 632-4021
Dr. Poonam Maru, DO, FACP
Gaithersburg, MD · No drug or device payments recorded (2025) · Telehealth · (302) 428-4411
Dr. Priscilla Callahan-lyon, M.D.
Gaithersburg, MD · No drug or device payments recorded (2025) · (240) 773-0307
Dr. Qiufang Cheng, MD
Gaithersburg, MD · $464 in drug and device payments (2025) · (301) 339-8264
Dr. Ramleth Shakir, MD
Gaithersburg, MD · $277 in drug and device payments (2025) · (301) 258-7636
Dr. Rasha Saleem, MD
Gaithersburg, MD · $293 in drug and device payments (2025) · Telehealth · (240) 246-1111
Dr. Richard Weidman, M.D.
Gaithersburg, MD · No drug or device payments recorded (2025) · Telehealth · (301) 215-0880

Conditions Internal Medicine providers in Gaithersburg, Maryland commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Internal Medicine providers are in Gaithersburg, Maryland?

There are 64 Internal Medicine providers with active NPI records practicing in Gaithersburg, according to federal NPPES data refreshed monthly.

How many Internal Medicine providers in Gaithersburg received drug or device company payments?

20 of 64 (31%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Internal Medicine providers in Gaithersburg treat?

Internal Medicine providers in Gaithersburg commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

All specialties in Gaithersburg Internal Medicine across Maryland

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.