NPPES file of Aug 9, 2026

Ryan Nugent, MD

Psychiatry Physician · San Francisco, CA

Ryan Nugent, MD is a psychiatry physician with a practice address in San Francisco, California, and NPI 1831578723, issued on May 25, 2015. Check the license (California A158930, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831578723
Name
Ryan Nugent
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A158930 CA
Self-reported in NPPES; status is on the state search
Practice location
360 Post St Ste 500, San Francisco, CA 94108
Phone
(844) 867-8444
Enumerated
May 25, 2015
Record last updated
May 10, 2023
Medicare enrollment
Enrolled (PECOS I20210615001704); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 360 Post St Ste 500

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ferhad Ahmad, MDNeurology Physician1831484930
  2. Omar Elhaj, MDPsychiatry Physician1821103904
  3. Wendy Marussich, PMHNP, RNPsychiatric/Mental Health Nurse Practitioner1316635956
  4. Sahab Yaqubi, M.D.Psychiatry Physician1437597739

Verify Ryan Nugent in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A158930
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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91% fewer Medicare Part D claims than the average psychiatry physician in 2024

87 Medicare Part D claims for 12 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Ryan Nugent87
  2. Specialty average1,000

Most prescribed

  1. Diazepam13 claims

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.

Bills Medicare through 2 group practices

  1. Bay Psychiatric AssociatesBerkeley, CA
  2. Zeam Medical Group IncRoseville, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ryan Nugent among 8,673 psychiatry physician records in California

Ryan Nugent, MD is one of 8,673 psychiatry 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. Its NPI, issued in 2015, is newer than 74% of them.

  • NPI issued2015 · 74% of these records are older, 23% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated2017 · median 2005 among the 3,295 with a school on file
  • Record last updated2023 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

763 psychiatry physician records list a practice address in San Francisco

They are 763 of the 38,143 NPPES records with a practice address in San Francisco, and 8,673 psychiatry physician records in California.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Omar Elhaj, MDSan Francisco, CA 941081821103904
  2. Michael Hipolito, M.D.San Francisco, CA 941081023309622
  3. Maria Lama Cheda, M.D.San Francisco, CA 941081811341134
  4. Seth Robbins, M.D.San Francisco, CA 941081215091954
  5. Lenore Terr, M.D.San Francisco, CA 941081033216064
  6. Svetlana Troitskaia-Williams, MDSan Francisco, CA 941081922145671
  7. Kimberly Tseng, M.D.San Francisco, CA 941081053595991
  8. Sahab Yaqubi, M.D.San Francisco, CA 941081437597739

Common questions

What is Ryan Nugent, MD's NPI number?

Ryan Nugent, MD's National Provider Identifier (NPI) is 1831578723, issued on May 25, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Ryan Nugent, MD located?

The NPPES record lists a practice address at 360 Post St Ste 500, San Francisco, CA, 94108. Phone: (844) 867-8444. Providers update this record themselves, so call before visiting.

How can I verify Ryan Nugent, MD's license?

NPPES lists California license number A158930, 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 Ryan Nugent, MD prescribe under Medicare Part D?

In 2024, Ryan Nugent, MD had 87 Medicare Part D claims for 12 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.