Nathaniel West, M.D.
Emergency Medicine Physician · San Francisco, CA
Nathaniel West, M.D. is an emergency medicine physician with a practice address in San Francisco, California, and NPI 1497160576, issued on Jun 26, 2014. Check the license (California A169302, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathaniel West
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- A169302 CA
036-143611 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1001 Potrero Ave Bldg 25, San Francisco, CA 94110
- Phone
- (628) 206-5753
- Enumerated
- Jun 26, 2014
- Record last updated
- Nov 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1001 Potrero Ave Bldg 25
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Maxwell Birger, MDInternal Medicine Physician1275162976
- Rahael Borchers, MDInternal Medicine Physician1184360588
- Theresa ChengEmergency Medicine Physician1578926929
- Jeffrey Critchfield, MDInternal Medicine Physician1750392791
Verify Nathaniel West in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A169302Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average emergency medicine physician in 2024
20 Medicare Part D claims for 15 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Nathaniel West among 7,751 emergency medicine physician records in California
Nathaniel West, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 69% of them.
- NPI issued2014 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Francisco → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- John Brown, MDSan Francisco, CA 941101053355941
- Ritik Chandra, MDSan Francisco, CA 941101700838737
- Rachel Chin, MDSan Francisco, CA 941101477597375
- Christopher Colwell, MDSan Francisco, CA 941101629092788
- Alan Gelb, MDSan Francisco, CA 941101497796213
- Eric Isaacs, MDSan Francisco, CA 941101356385231
- Todd Kessinger, MDSan Francisco, CA 941101255374732
- Judith Klein, MDSan Francisco, CA 941101235171638
Common questions
What is Nathaniel West, M.D.'s NPI number?
Nathaniel West, M.D.'s National Provider Identifier (NPI) is 1497160576, issued on Jun 26, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Nathaniel West, M.D. located?
The NPPES record lists a practice address at 1001 Potrero Ave Bldg 25, San Francisco, CA, 94110. Phone: (628) 206-5753. Providers update this record themselves, so call before visiting.
How can I verify Nathaniel West, M.D.'s license?
NPPES lists California license number A169302, 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.
How much does Nathaniel West, M.D. prescribe under Medicare Part D?
In 2024, Nathaniel West, M.D. had 20 Medicare Part D claims for 15 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.