NPPES file of Aug 9, 2026

James Brian Billys, MD

Anesthesiology Physician · San Diego, CA

James Brian Billys, MD is an anesthesiology physician with a practice address in San Diego, California, and NPI 1013544113, issued on Mar 26, 2020. Check the license (California A202048, 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
1013544113
Name
James Brian Billys
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
A202048 CA
Self-reported in NPPES; status is on the state search
Practice location
3626 Ruffin RD, San Diego, CA 92123
Phone
(858) 565-9666
Enumerated
Mar 26, 2020
Record last updated
Jul 22, 2025
Fax
(858) 565-9441
Medicare enrollment
Enrolled (PECOS I20250805000876); accepts Medicare assignment
Medical or professional school
Jefferson Medical College Of Thomas Jefferson University, 2020
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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8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →

Also registered at 3626 Ruffin RD

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

  1. Rolando Abada, M.D.Anesthesiology Physician1952319071
  2. Yvonne Ahn, MDAnesthesiology Physician1447407275
  3. Anthony Alarcon, M.D.Anesthesiology Physician1972745370
  4. Arti Amin, M.D.Anesthesiology Physician1124349774
  5. John Arnold, M.D.Anesthesiology Physician1306853585
  6. Gus Atkins, M.D.Anesthesiology Physician1821075987

Verify James Brian Billys in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A202048    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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Bills Medicare through one group practice

  1. Anesthesia Service Medical GroupSan Diego, CA

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

James Brian Billys among 7,571 anesthesiology physician records in California

James Brian Billys, 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 2020, is newer than 92% of them.

  • NPI issued2020 · 92% of these records are older, 5% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2020 · median 2006 among the 4,868 with a school on file
  • Record last updated2025 · 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).

686 anesthesiology physician records list a practice address in San Diego

They are 686 of the 52,937 NPPES records with a practice address in San Diego, and 7,571 anesthesiology physician records in California.

All 7,571 in California → Every provider in San Diego → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Gus Atkins, M.D.San Diego, CA 921231821075987
  2. Paul Cattafi, DOSan Diego, CA 921231538151543
  3. Fei Chen, M.D.San Diego, CA 921231144290701
  4. Eric Clark, M.D.San Diego, CA 921231720078470
  5. William Connell, M.D.San Diego, CA 921231609848027
  6. Hisham El-Tayeb, M.D.San Diego, CA 921231679544084
  7. Janice Fernandez, M.D.San Diego, CA 921231578549788
  8. Robert Howard, M.D.San Diego, CA 921231003889528

Common questions

What is James Brian Billys, MD's NPI number?

James Brian Billys, MD's National Provider Identifier (NPI) is 1013544113, issued on Mar 26, 2020. An NPI identifies a provider in billing; it is not a license.

Where is James Brian Billys, MD located?

The NPPES record lists a practice address at 3626 Ruffin RD, San Diego, CA, 92123. Phone: (858) 565-9666. Providers update this record themselves, so call before visiting.

How can I verify James Brian Billys, MD's license?

NPPES lists California license number A202048, 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.

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.