Skip to main content
NPITelehealth
SpecialtiesLocationsJournalAbout
ProvidersRegistry Search
CMS Data Source
NPI Registry Data
Expert Editorial
NPITelehealth

Finding a doctor shouldn't be a guessing game. We connect patients with verified healthcare professionals using official federal data.

Explore

  • Search
  • Specialties
  • Locations
  • Guides

Resources

  • Methodology
  • Editorial
  • For Providers
  • Sitemap

Legal

  • About
  • Contact
  • Privacy
  • Terms

© 2026 NPI Telehealth

US Registry Operational
CMS Source

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

PrivacyTermsEditorialDisclaimer
Online Internal Medicine Doctors in FULLERTON, CA | Telehealth Visits | NPI Telehealth | NPI Telehealth
Home/California/FULLERTON/Internal Medicine Doctors
LOCAL SPECIALTY PROTOCOL 2026

Internal Medicine Doctors
IN FULLERTON.

Find and book verified Internal Medicine specialists in FULLERTON, CA. Access NPI credentials sourced from federal records and virtual care availability.

SPECIALISTS

Active internal medicine doctors in FULLERTON jurisdiction.

38 ENTRIES FOUND
NPI: 1942626767
VIRTUAL ACTIVE

Maximiliano Hyon, D.O.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
12+ Years Exp.
ACCESS PROFILE
NPI: 1932593167
VIRTUAL ACTIVE

Vijay Krishna Prabhakar, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
Duke University School of Medicine (2015)
11+ Years Exp.
ACCESS PROFILE
NPI: 1861618449
VIRTUAL ACTIVE

Eugene Jay Yoon, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
University of Virginia School of Medicine (2001)
19+ Years Exp.
ACCESS PROFILE
NPI: 1831305879
VIRTUAL ACTIVE

Nancy Said Hernandez, DO

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
19+ Years Exp.
ACCESS PROFILE
NPI: 1831185792
VIRTUAL ACTIVE

Leo Garcia, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
HOWARD UNIVERSITY COLLEGE OF MEDICINE (1995)
21+ Years Exp.
ACCESS PROFILE
NPI: 1811984123
VIRTUAL ACTIVE

Jay H. Kim, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
21+ Years Exp.
ACCESS PROFILE
NPI: 1801882261
VIRTUAL ACTIVE

Edward Lawton, M.D..

Internal Medicine

NPI DATA 2026
FULLERTON, CA
R FRANKLIN UNIVERSITY OF MED & SCI/CHICAGO MEDICAL SCHOOL (1994)
21+ Years Exp.
ACCESS PROFILE
NPI: 1801356290
VIRTUAL ACTIVE

Johnny Wu, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
7+ Years Exp.
ACCESS PROFILE
NPI: 1801152772
VIRTUAL ACTIVE

Patrick Koo, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
Penn State College of Medicine (2012)
14+ Years Exp.
ACCESS PROFILE
NPI: 1760773014
VIRTUAL ACTIVE

Michelle T Ngo, DO

Internal Medicine

NPI DATA 2026
FULLERTON, CA
ARIZONA COLLEGE OF OSTEOPATHIC MEDICINE MID WESTERN UNIVERSITY (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1760742001
VIRTUAL ACTIVE

Julie Hyojung Yoo, M.D., M.P.H.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
14+ Years Exp.
ACCESS PROFILE
NPI: 1669976585
VIRTUAL ACTIVE

Ned Premyodhin, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
University of Arizona College of Medicine (2018)
8+ Years Exp.
ACCESS PROFILE
NPI: 1649266032
VIRTUAL ACTIVE

Mark D Weissig, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
Duke University School of Medicine (1980)
21+ Years Exp.
ACCESS PROFILE
NPI: 1598721284
VIRTUAL ACTIVE

John Kwanghyuk Lee, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1588650667
VIRTUAL ACTIVE

John Gilbert, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
SUNY Downstate Health Sciences University (1983)
21+ Years Exp.
ACCESS PROFILE
NPI: 1568581759
VIRTUAL ACTIVE

Sang Hoon Ahn, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
19+ Years Exp.
ACCESS PROFILE
NPI: 1568466431
VIRTUAL ACTIVE

Edward M Lee, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
Loyola University Chicago Stritch School of Medicine (1992)
21+ Years Exp.
ACCESS PROFILE
NPI: 1568458008
VIRTUAL ACTIVE

Ruben Cabral, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
University of California, San Francisco School of Medicine (1989)
21+ Years Exp.
ACCESS PROFILE
NPI: 1548422991
VIRTUAL ACTIVE

Shilpa J. Mehta, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
18+ Years Exp.
ACCESS PROFILE
NPI: 1487946364
VIRTUAL ACTIVE

Shivani Kamalesh Patel, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
15+ Years Exp.
ACCESS PROFILE
NPI: 1457437626
VIRTUAL ACTIVE

Shirley W Pang, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
David Geffen School of Medicine at UCLA (2001)
20+ Years Exp.
ACCESS PROFILE
NPI: 1427518752
VIRTUAL ACTIVE

Steven Nils Luminais, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
Lewis Katz School of Medicine at Temple University (2019)
7+ Years Exp.
ACCESS PROFILE
NPI: 1376959510
VIRTUAL ACTIVE

Sonaina Imtiaz, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
12+ Years Exp.
ACCESS PROFILE
NPI: 1326048323
VIRTUAL ACTIVE

Sajen Mathews, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
21+ Years Exp.
ACCESS PROFILE
NPI: 1316272180
VIRTUAL ACTIVE

Becky Thai Muldoon, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
17+ Years Exp.
ACCESS PROFILE
NPI: 1306015607
VIRTUAL ACTIVE

Amy Alias, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
18+ Years Exp.
ACCESS PROFILE
NPI: 1285837229
VIRTUAL ACTIVE

Roy Logarta Panares, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
Lewis Katz School of Medicine at Temple University (2001)
19+ Years Exp.
ACCESS PROFILE
NPI: 1285620658
VIRTUAL ACTIVE

David A Ruckman, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
George Washington University School of Medicine and Health Sciences (1988)
21+ Years Exp.
ACCESS PROFILE
NPI: 1275619447
VIRTUAL ACTIVE

David J Park, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1225122674
VIRTUAL ACTIVE

Mythili Nagaraj, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1215129309
VIRTUAL ACTIVE

Monica E Lee, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
19+ Years Exp.
ACCESS PROFILE
NPI: 1174609358
VIRTUAL ACTIVE

Sanjay Sharma, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1154664597
VIRTUAL ACTIVE

Jason Ling, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
13+ Years Exp.
ACCESS PROFILE
NPI: 1134195118
VIRTUAL ACTIVE

Jyotika L Wali, M.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1033370358
VIRTUAL ACTIVE

Shamail S. Tariq, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
UNIVERSITY OF MISSOURI, KANSAS CITY, SCHOOL OF MEDICINE (2008)
18+ Years Exp.
ACCESS PROFILE
NPI: 1023050135
VIRTUAL ACTIVE

Saadah Alrajab, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1013277342
VIRTUAL ACTIVE

Yung Lyou, M.D., PH.D.

Internal Medicine

NPI DATA 2026
FULLERTON, CA
STATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY (2012)
14+ Years Exp.
ACCESS PROFILE
NPI: 1003886698
VIRTUAL ACTIVE

Steven Woong Kim, MD

Internal Medicine

NPI DATA 2026
FULLERTON, CA
Baylor College of Medicine (1997)
20+ Years Exp.
ACCESS PROFILE

Local Discovery Protocol

Navigating healthcare in FULLERTON, CA requires finding the right expert. A highly qualified internal medicine is crucial for proper diagnosis and long-term care management.

  • NPI Credentials: Active NPI status and valid CA state licensing sourced from federal records.
  • Virtual Options: Encrypted telehealth consultations available for remote triage.
All Providers in CaliforniaNationwide Internal Medicines