NPI Portal NPI Lookup & Verification

Internal Medicine in Clearlake, CA

15 active Internal Medicine providers practice in Clearlake, California according to the latest NPPES snapshot. Profiles include the NPI number, taxonomy code, license state, and practice address.

Internal Medicine providers in Clearlake, CA
NPI Name Type Specialty Location
1154646982 Adventist Health California Medical Group, Inc. Organization Cardiovascular Disease Physician Clearlake, CA
1831486653 Adventist Health California Medical Group, Inc. Organization Cardiovascular Disease Physician Clearlake, CA
1588961676 Adventist Health Physicians Network Organization Cardiovascular Disease Physician Clearlake, CA
1992242614 Adventist Health Physicians Network Organization Cardiovascular Disease Physician Clearlake, CA
1578660916 Eric Kim Individual Internal Medicine Physician Clearlake, CA
1154434728 Ilkyoon Kim Individual Cardiovascular Disease Physician Clearlake, CA
1811362585 Jennifer A Dowalter MD A Professional Corporation Organization Internal Medicine Physician Clearlake, CA
1861835811 Kundai Tanganyika Individual Cardiovascular Disease Physician Clearlake, CA
1235373184 Marc R Shapiro Medical Corp Organization Internal Medicine Physician Clearlake, CA
1740217348 Marc Shapiro Individual Internal Medicine Physician Clearlake, CA
1245212505 Milagros Tolentino Individual Internal Medicine Physician Clearlake, CA
1083382139 Palliative Care Consultants of California A Medical Corporation Organization Hospice and Palliative Medicine (Internal Medicine) Physician Clearlake, CA
1386659167 Raymond Jennings Individual Internal Medicine Physician Clearlake, CA
1457439200 Thomas Kreck Individual Critical Care Medicine (Internal Medicine) Physician Clearlake, CA
1780692392 Whie Oh Individual Interventional Cardiology Physician Clearlake, CA

Frequently asked questions

How many Internal Medicine providers are in Clearlake, CA?
The latest NPPES snapshot lists 15 active Internal Medicine providers with a practice address in Clearlake, California.
How do I check a Internal Medicine provider's NPI in Clearlake?
Open a profile below to see the NPI number, taxonomy code, and practice address, then verify against the official NPPES registry — every profile links directly to the CMS record.

Source: CMS NPPES (public data). Snapshot 2026-07-11.