NPPES file of Aug 9, 2026

Dylan Masters, MD

Anesthesiology Physician · San Francisco, CA

Dylan Masters, MD is an anesthesiology physician with a practice address in San Francisco, California, and NPI 1215399589, issued on Mar 24, 2016. Check the license (California A152600, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1215399589
Name
Dylan Masters
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
A152600 CA
Self-reported in NPPES; status is on the state search
Practice location
326 Irving St, San Francisco, CA 94122
Phone
(415) 755-8291
Enumerated
Mar 24, 2016
Record last updated
Aug 4, 2023
Medicare enrollment
Enrolled (PECOS I20210805002409); accepts Medicare assignment
Medical or professional school
University Of California, San Francisco School Of Medicine, 2016
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.
Download card Updates feed

Verify Dylan Masters in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A152600
    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. University Anesthesia Medical GroupSan Francisco, CA

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

Dylan Masters among 7,571 anesthesiology physician records in California

Dylan Masters, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 80% of them.

  • NPI issued2016 · 80% of these records are older, 17% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2016 · median 2006 among the 4,868 with a school on file
  • Record last updated2023 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

499 anesthesiology physician records list a practice address in San Francisco

They are 499 of the 38,143 NPPES records with a practice address in San Francisco, and 7,571 anesthesiology physician records in California.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Emily Ginsburg, MDSan Francisco, CA 941221346370327
  2. Brian Gilliss, M.D. M.S.San Francisco, CA 941211477833291
  3. Asmina Khan, MDSan Francisco, CA 941211942372693
  4. Donald Koblin, MDSan Francisco, CA 941211245275023
  5. Marilyn Michelow, M.D.San Francisco, CA 941211801159074
  6. Gerard Ozanne, M.D.San Francisco, CA 941211770529604
  7. Alex RussellSan Francisco, CA 941211417585423
  8. Arthur Wallace, M.D., PH.D.San Francisco, CA 941211366476418

Common questions

What is Dylan Masters, MD's NPI number?

Dylan Masters, MD's National Provider Identifier (NPI) is 1215399589, issued on Mar 24, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Dylan Masters, MD located?

The NPPES record lists a practice address at 326 Irving St, San Francisco, CA, 94122. Phone: (415) 755-8291. Providers update this record themselves, so call before visiting.

How can I verify Dylan Masters, MD's license?

NPPES lists California license number A152600, 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.