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© 2026 NPI Telehealth

US Registry Operational
CMS Source

Informational purposes only — not medical advice. Always consult a professional. Data updated weekly. Read full disclaimer.

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Online Internal Medicine Doctors | Telehealth & Virtual Visits | NPI Telehealth | NPI Telehealth
SPECIALTY DISCOVERY ACTIVE 2026

Internal Medicine.

Find and book verified Internal Medicine specialists. Access NPI credentials, office locations, and virtual care availability.

VERIFIED SPECIALISTS

Active medical practitioners in Internal Medicine clinical focus.

62,216 ENTRIES FOUND
NPI: 1639130263
VIRTUAL ACTIVE

Paul A Hinton, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Lake St Louis, MO
Saint Louis University School of Medicine (2002)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639130230
VIRTUAL ACTIVE

Mohammed A Merchant, D.O.

Internal Medicine

CREDENTIALS VERIFIED 2026
Windermere, FL
NOVA SOUTHEASTERN COLLEGE OF OSTEO MEDICINE (2000)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639130149
VIRTUAL ACTIVE

Michael K Cummings, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Edina, MN
University of Minnesota Medical School (1986)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639129828
VIRTUAL ACTIVE

Catherine M. Fleisher, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Cleveland, OH
NORTHEASTERN OHIO UNIVERSITY COLLEGE OF MEDICINE (1999)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639129612
VIRTUAL ACTIVE

Oluyemisi Omotola Ariyibi, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
New York, NY
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1639129026
VIRTUAL ACTIVE

Irena Pleskova, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Brooklyn, NY
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1639127228
VIRTUAL ACTIVE

David Paul Vetter, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Tacoma, WA
UNIFORMED SERVICES UHS FE HEBERT SCHOOL OF MED (1994)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639126667
VIRTUAL ACTIVE

Adrian Dobs, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Baltimore, MD
Albany Medical College (1978)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639126428
VIRTUAL ACTIVE

Murray Allan Mittleman, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Boston, MA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1639126113
VIRTUAL ACTIVE

Ayman Akkad, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Lutherville, MD
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1639124399
VIRTUAL ACTIVE

Stanley R Zimmerman, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
North Brunswick, NJ
Albert Einstein College of Medicine (1975)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639124159
VIRTUAL ACTIVE

Dino James Delaportas, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Bridgeport, WV
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1639123904
VIRTUAL ACTIVE

Mary Beth Graham, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Milwaukee, WI
Northwestern University Feinberg School of Medicine (1984)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639123789
VIRTUAL ACTIVE

Osvaldo Steven Gigliotti, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
New Braunfels, TX
University of Pittsburgh School of Medicine (1995)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639123722
VIRTUAL ACTIVE

Beverly M Calkins, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Roseville, CA
Loma Linda University School of Medicine (1996)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639123458
VIRTUAL ACTIVE

Tanjeev Kaur, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Hazel Crest, IL
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1639122591
VIRTUAL ACTIVE

Matthew Lonergan, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Eugene, OR
Harvard Medical School (1994)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639122492
VIRTUAL ACTIVE

Todd H Goldberg, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Abington, PA
NYU Grossman School of Medicine (1984)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639122245
VIRTUAL ACTIVE

Beth S Du, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Richmond, VA
Virginia Commonwealth University School of Medicine (1997)
20+ Years Exp.
ACCESS PROFILE
NPI: 1639122112
VIRTUAL ACTIVE

Abdol Memar-Zia, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Simi Valley, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
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Why Choose a Verified Internal Medicine Specialist?

Selecting a Internal Medicine is a personal decision that impacts your long-term health. Whether you are seeking treatment for a specific condition or looking for a second opinion, we provide access to a verified list of practicing specialists.

We recommend reviewing clinical background, years of practice, and verified patient experiences before scheduling your visit. Many Internal Medicines now offer telehealth services, allowing you to receive expert medical advice from the comfort of your home.

Institutional Data Integrity

Every provider on NPI Telehealth is verified against the National Plan and Provider Enumeration System (NPPES). We ensure that you connect with licensed, active professionals who meet federal clinical standards.

100% VERIFIED CREDENTIALS
REAL-TIME REGISTRY UPDATES