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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: 1215946603
VIRTUAL ACTIVE

Feliks S Mavashev, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Chicago, IL
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1215945985
VIRTUAL ACTIVE

Carl A Meyer, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Media, PA
Georgetown University School of Medicine (1999)
20+ Years Exp.
ACCESS PROFILE
NPI: 1215945803
VIRTUAL ACTIVE

Aida Dervisevic, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Danbury, CT
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1215945738
VIRTUAL ACTIVE

Jonathan Meier Schwartz, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Portland, OR
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1215945258
VIRTUAL ACTIVE

Mohinder Pal Singh, M.D

Internal Medicine

CREDENTIALS VERIFIED 2026
East Liverpool, OH
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1215945001
VIRTUAL ACTIVE

Matthew Evert Wiisanen, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Chattanooga, TN
University of Minnesota Medical School (2005)
20+ Years Exp.
ACCESS PROFILE
NPI: 1215944582
VIRTUAL ACTIVE

John Michael Dalena, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Florham Park, NJ
Rutgers New Jersey Medical School (1985)
20+ Years Exp.
ACCESS PROFILE
NPI: 1215943907
VIRTUAL ACTIVE

Syed Ali Zaidi, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Southampton, PA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1215943337
VIRTUAL ACTIVE

DAVID O'NEILL, DO

Internal Medicine

CREDENTIALS VERIFIED 2026
LEHIGHTON, PA
PHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE (2000)
20+ Years Exp.
ACCESS PROFILE
NPI: 1215941778
VIRTUAL ACTIVE

Son Thai Nguyen, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Huntington Beach, CA
UNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE (1985)
20+ Years Exp.
ACCESS PROFILE
NPI: 1215939038
VIRTUAL ACTIVE

Victor Joseph Guadagnino, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Brooklyn, NY
OFFICIAL REGISTRY DATA
21+ Years Exp.
ACCESS PROFILE
NPI: 1215938766
VIRTUAL ACTIVE

Rosa Choung, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Middletown, NY
NYU Grossman School of Medicine (1996)
21+ Years Exp.
ACCESS PROFILE
NPI: 1215938683
VIRTUAL ACTIVE

Marsden Scott Blois, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Boulder, CO
Baylor College of Medicine (1993)
21+ Years Exp.
ACCESS PROFILE
NPI: 1215938451
VIRTUAL ACTIVE

Chris C Naum, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Indianapolis, IN
Indiana University School of Medicine (1983)
21+ Years Exp.
ACCESS PROFILE
NPI: 1215938360
VIRTUAL ACTIVE

Bhagvan R Malladi, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Lufkin, TX
OFFICIAL REGISTRY DATA
21+ Years Exp.
ACCESS PROFILE
NPI: 1215934658
VIRTUAL ACTIVE

Wilner Samson, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Southington, CT
University of Wisconsin School of Medicine and Public Health (1997)
21+ Years Exp.
ACCESS PROFILE
NPI: 1215933692
VIRTUAL ACTIVE

Joseph A Rigotti, DO

Internal Medicine

CREDENTIALS VERIFIED 2026
Jenkintown, PA
Philadelphia College of Osteopathic Medicine (1984)
21+ Years Exp.
ACCESS PROFILE
NPI: 1215933247
VIRTUAL ACTIVE

David Joseph Johnson, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Owensboro, KY
University of Kentucky College of Medicine (1998)
21+ Years Exp.
ACCESS PROFILE
NPI: 1215932900
VIRTUAL ACTIVE

Shi-Tze Lu, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Houston, TX
Baylor College of Medicine (1988)
21+ Years Exp.
ACCESS PROFILE
NPI: 1215932462
VIRTUAL ACTIVE

Charles A Duncan, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
San Antonio, TX
Medical College of Georgia at Augusta University (1977)
21+ 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