Fiona Ng, MD, MPH
Internal Medicine Physician · San Francisco, CA
Fiona Ng, MD, MPH is an internal medicine physician with a practice address in San Francisco, California, and NPI 1518607407, issued on Mar 30, 2022. Check the license (California A189223, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Fiona Ng
- Credential
- MD, MPH
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A189223 CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 476-4562
- Enumerated
- Mar 30, 2022
- Record last updated
- Aug 14, 2025
- Fax
- (415) 502-4166
- Medicare enrollment
- Enrolled (PECOS I20250902002986); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2022
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 500 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kwabena Adu-KwartengStudent in an Organized Health Care Education/Training Program1801697784
- Annette Albright, M.D.Psychiatry Physician1750430625
- Abdullah Alshammari, MD, FRCSCOrthopaedic Surgery of the Spine Physician1437982477
- Gulsedef Arslan, DOStudent in an Organized Health Care Education/Training Program1891358297
- Peter Barish, M.D.Internal Medicine Physician1366861379
- Jeffrey Barry, MDOrthopaedic Surgery Physician1598031304
Verify Fiona Ng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A189223Check 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
- City And County OF San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Fiona Ng among 17,696 internal medicine physician records in California
Fiona Ng, MD, MPH is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2022 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nathan Bass, MDSan Francisco, CA 941431689638959
- Margaret Fang, MDSan Francisco, CA 941431417911462
- Katherine Julian, MDSan Francisco, CA 941431003879826
- John Kane, MDSan Francisco, CA 941431467416461
- Suneil Koliwad, M.D., PH.D.San Francisco, CA 941431225006687
- Bernard Lo, MDSan Francisco, CA 941431184688137
- Stephen McPhee, MDSan Francisco, CA 941431124082490
- Andrew Posselt, MDSan Francisco, CA 941431235193616
Common questions
What is Fiona Ng, MD, MPH's NPI number?
Fiona Ng, MD, MPH's National Provider Identifier (NPI) is 1518607407, issued on Mar 30, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Fiona Ng, MD, MPH located?
The NPPES record lists a practice address at 500 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 476-4562. Providers update this record themselves, so call before visiting.
How can I verify Fiona Ng, MD, MPH's license?
NPPES lists California license number A189223, 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.