Ruth Zhang
Anatomic Pathology & Clinical Pathology Physician · San Francisco, CA
Ruth Zhang is an anatomic pathology & clinical pathology physician with a practice address in San Francisco, California, and NPI 1174028385, issued on Mar 28, 2018. Check the license (California A166268, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ruth Zhang
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- A166268 CA
Self-reported in NPPES; status is on the state search - Practice location
- 505 Parnassus Avenue, San Francisco, CA 94143
- Phone
- (415) 353-1613
- Enumerated
- Mar 28, 2018
- Record last updated
- Jun 14, 2024
- Medicare enrollment
- Enrolled (PECOS I20240624003243); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 1,554 in California → Look up another NPI →
Also registered at 505 Parnassus Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Alegria, PHARMDPharmacist1942770565
- Hayley Barnes, MBBS, PHDPulmonary Disease Physician1851106223
- Benjamin Beland, MDStudent in an Organized Health Care Education/Training Program1598500761
- Vaibhav Birda, MDHospitalist Physician1346809506
- Galen Bussmann, MD, MBAEmergency Medicine Physician1306541578
- Hilary ChildersInternal Medicine Physician1861996001
Verify Ruth Zhang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A166268Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Peninsula Pathologists Medical Group IncBurlingame, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ruth Zhang among 1,554 anatomic pathology & clinical pathology physician records in California
Ruth Zhang is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 91% of them.
- NPI issued2018 · 91% of these records are older, 7% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2018 · median 2003 among the 891 with a school on file
- Record last updated2024 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in California
There are 1,554 anatomic pathology & clinical pathology physician records in California.
All 1,554 in California → Every provider in San Francisco → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Frederick Baehner, MDSan Francisco, CA 941431326091208
- Alexander Borowsky, M.D.San Francisco, CA 941431891777512
- Katharine BradySan Francisco, CA 941431265476196
- Yunn-Yi Chen, MDSan Francisco, CA 941431841245966
- Mamatha Chivukula, MDSan Francisco, CA 941431750353280
- Linda Ferrell, MDSan Francisco, CA 941431730137126
- Sanjay Kakar, MDSan Francisco, CA 941431235187634
- Marta Margeta, MDSan Francisco, CA 941431477510626
Common questions
What is Ruth Zhang's NPI number?
Ruth Zhang's National Provider Identifier (NPI) is 1174028385, issued on Mar 28, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Ruth Zhang located?
The NPPES record lists a practice address at 505 Parnassus Avenue, San Francisco, CA, 94143. Phone: (415) 353-1613. Providers update this record themselves, so call before visiting.
How can I verify Ruth Zhang's license?
NPPES lists California license number A166268, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.