NPI Portal NPI Lookup & Verification

Internal Medicine in Castro Valley, CA

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

Internal Medicine providers in Castro Valley, CA
NPI Name Type Specialty Location
1356737530 Aditya Vaze Individual Cardiovascular Disease Physician Castro Valley, CA
1700958451 Amer Budayr Individual Endocrinology, Diabetes & Metabolism Physician Castro Valley, CA
1548557077 Andrea Dhaliwal Individual Internal Medicine Physician Castro Valley, CA
1326024084 Archana Aggarwal Individual Nephrology Physician Castro Valley 94546, CA
1558780825 Arpeet Shah Individual Medical Oncology Physician Castro Valley, CA
1336106897 Avant Inpatient Services Medical Group, Inc Organization Internal Medicine Physician Castro Valley, CA
1992736367 Byron Wilson Individual Medical Oncology Physician Castro Valley, CA
1437194677 Cardiovascular Consultants Medical Group, Inc. Organization Interventional Cardiology Physician Castro Valley, CA
1770780835 David Wallace Individual Critical Care Medicine (Internal Medicine) Physician Castro Valley, CA
1295296275 Diana Hess Individual Internal Medicine Physician Castro Valley, CA
1790858611 Donald Knotts Individual Internal Medicine Physician Castro Valley, CA
1467618454 Farnoosh Farrokhi Individual Endocrinology, Diabetes & Metabolism Physician Castro Valley, CA
1629170998 Gastroenterology Specialists Medical Group, Inc A Medical Corporation Organization Gastroenterology Physician Castro Valley, CA
1467731828 Gene-Yuan Chang Individual Nephrology Physician Castro Valley, CA
1083891212 George D Cowen, MD Professional Corp Organization Internal Medicine Physician Castro Valley, CA
1790022416 Harkiran Grewal Individual Infectious Disease Physician Castro Valley, CA
1003270877 Helen Yang Individual Internal Medicine Physician Castro Valley, CA
1528393063 Irene Dy Individual Hematology (Internal Medicine) Physician Castro Valley, CA
1932325446 Jeffrey Singerman Individual Gastroenterology Physician Castro Valley, CA
1316977978 Jeffrey West Individual Cardiovascular Disease Physician Castro Valley, CA
1750524575 Jennifer Casey Individual Endocrinology, Diabetes & Metabolism Physician Castro Valley, CA
1194741256 Kathryn Hodge Individual Internal Medicine Physician Castro Valley, CA
1740476761 Kathryn Welty Individual Nephrology Physician Castro Valley, CA
1386962421 Khoa Nguyen Individual Internal Medicine Physician Castro Valley, CA
1194898510 Laurence Athos Individual Pulmonary Disease Physician Castro Valley, CA
1225109358 Laurence Athos M D Inc Organization Pulmonary Disease Physician Castro Valley, CA
1104842293 Laurie Nakahira Individual Internal Medicine Physician Castro Valley, CA
1073684429 Ling Xu Individual Internal Medicine Physician Castro Valley, CA
1033280896 Ling Xu, MD,Inc. Organization Internal Medicine Physician Castro Valley, CA
1831695915 Mahboub Noori Individual Hematology & Oncology Physician Castro Valley, CA
1700758638 Mahendra Patel Individual Internal Medicine Physician Castro Valley, CA
1376569475 Marcia Peck Individual Endocrinology, Diabetes & Metabolism Physician Castro Valley, CA
1396815973 MD Kadada Inc Organization Internal Medicine Physician Castro Valley, CA
1619900347 Monica Bhargava Individual Internal Medicine Physician Castro Valley, CA
1831526300 Mridula Rewal Individual Internal Medicine Physician Castro Valley, CA
1699724484 Nabil Abudayeh Individual Internal Medicine Physician Castro Valley, CA
1558558023 Nabil K Abudayeh MD Professional Corporation Organization Cardiovascular Disease Physician Castro Valley, CA
1922209436 Nalurporn Chokrungvaranon Individual Endocrinology, Diabetes & Metabolism Physician Castro Valley, CA
1770547192 Navdeep Singh Individual Pulmonary Disease Physician Castro Valley, CA
1598128415 Nazia Mir Individual Internal Medicine Physician Castro Valley, CA
1285811489 Nidhi Johri Individual Internal Medicine Physician Castro Valley, CA
1154541423 Nitin Joshi Individual Hematology (Internal Medicine) Physician Castro Valley, CA
1346777026 Nitin Tandan Individual Cardiovascular Disease Physician Castro Valley, CA
1053844183 Omar Saleem Individual Internal Medicine Physician Castro Valley, CA
1104996479 Pacific Critical Care & Neurocritical Care Specialists, Inc Organization Critical Care Medicine (Internal Medicine) Physician Castro Valley, CA
1710098298 Peter Hooberman Individual Gastroenterology Physician Castro Valley, CA
1376624742 Petr Utrata Individual Internal Medicine Physician Castro Valley, CA
1821089129 Rahel Ruiz Individual Internal Medicine Physician Castro Valley, CA
1033397963 Rahel Teferi Ruiz MD, Inc. Organization Internal Medicine Physician Castro Valley, CA
1740243930 Rahul Rishi Individual Nephrology Physician Castro Valley, CA

Frequently asked questions

How many Internal Medicine providers are in Castro Valley, CA?
The latest NPPES snapshot lists 74 active Internal Medicine providers with a practice address in Castro Valley, California.
How do I check a Internal Medicine provider's NPI in Castro Valley?
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.