NPPES file of Aug 9, 2026

Warner C. Greene, M.D., PH.D.

Allergy & Immunology (Internal Medicine) Physician · San Francisco, CA

Warner C. Greene, M.D., PH.D. is an allergy & immunology (internal medicine) physician with a practice address in San Francisco, California, and NPI 1528403797, issued on May 1, 2013. Check the license (California G77830, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1528403797
Name
Warner C. Greene
Credential
M.D., PH.D.
Primary taxonomy
Allergy & Immunology (Internal Medicine) Physician 207RA0201X
License number
G77830 CA
Self-reported in NPPES; status is on the state search
Practice location
1650 Owens St, San Francisco, CA 94158
Phone
(415) 734-4805
Enumerated
May 1, 2013
Record last updated
May 1, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(415) 355-0153
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest allergy & immunology (internal medicine) physician records → All 81 in California → Look up another NPI →

Verify Warner C. Greene in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G77830    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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Warner C. Greene among 81 allergy & immunology (internal medicine) physician records in California

Warner C. Greene, M.D., PH.D. is one of 81 allergy & immunology (internal medicine) physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2013, is newer than 62% of them.

  • NPI issued2013 · 62% of these records are older, 31% newer
  • In a Medicare fileNo · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 57% of these records are
  • Record last updated2013 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0201X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Allergy & Immunology (Internal Medicine) Physician providers in California

There are 81 allergy & immunology (internal medicine) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 81 in California → Every provider in San Francisco → Allergy & Immunology (Internal Medicine) Physician nationwide →

The 8 allergy & immunology (internal medicine) physician records with the nearest ZIP codes

  1. Anna LangSan Francisco, CA 941431235556432
  2. Rose MonahanSan Francisco, CA 941431518461268
  3. Iris Otani, M.D.San Francisco, CA 941431285925990
  4. Michele Pham, M.D.San Francisco, CA 941431194169300
  5. Kavitha ThiagarajanSan Francisco, CA 941431528695707
  6. Lulu TsaoSan Francisco, CA 941431780047779
  7. Lynn Spitler, MDSan Francisco, CA 941171588867535
  8. Von Nguyen, MDSan Francisco, CA 941151174815815

Common questions

What is Warner C. Greene, M.D., PH.D.'s NPI number?

Warner C. Greene, M.D., PH.D.'s National Provider Identifier (NPI) is 1528403797, issued on May 1, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Warner C. Greene, M.D., PH.D. located?

The NPPES record lists a practice address at 1650 Owens St, San Francisco, CA, 94158. Phone: (415) 734-4805. Providers update this record themselves, so call before visiting.

How can I verify Warner C. Greene, M.D., PH.D.'s license?

NPPES lists California license number G77830, 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.