NPPES file of Aug 9, 2026

Adam Brown, DO

Emergency Medicine Physician · San Leandro, CA

Adam Brown, DO is an emergency medicine physician with a practice address in San Leandro, California, and NPI 1306208855, issued on Mar 23, 2016. Check the license (California 20A17158, 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
1306208855
Name
Adam Brown
Credential
DO
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
20A17158 CA
Self-reported in NPPES; status is on the state search
Practice location
2500 Merced St, San Leandro, CA 94577
Phone
(510) 454-1000
Enumerated
Mar 23, 2016
Record last updated
Dec 17, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20201026003180); accepts Medicare assignment
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 2500 Merced St

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

  1. Rabiatu Abdullah, M.D.Emergency Medicine Physician1497833248
  2. Scott Abramson, M.D.Neurology Physician1891873667
  3. Jayaprada Achanta, M.D.Anesthesiology Physician1053463851
  4. Kristi Adachi, PHARMDPharmacist1396456737
  5. Mary Grace Aguayo, CRTCertified Respiratory Therapist1467923730
  6. Jatinder AhluwaliaPharmacist1508391483

Verify Adam Brown in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A17158
    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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39% fewer Medicare Part D claims than the average emergency medicine physician in 2024

137 Medicare Part D claims for 90 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.

  1. Adam Brown137
  2. Specialty average226

Most prescribed

  1. Ibuprofen16 claims
  2. Amoxicillin-Clavulanate Potass11 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 one group practice

  1. Permanente Medical Group IncSan Leandro, CA

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

Adam Brown among 7,751 emergency medicine physician records in California

Adam Brown, DO 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 2016, is newer than 75% of them.

  • NPI issued2016 · 75% of these records are older, 22% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2016 · median 2011 among the 4,560 with a school on file
  • 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).

59 emergency medicine physician records list a practice address in San Leandro

They are 59 of the 4,976 NPPES records with a practice address in San Leandro, and 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Rabiatu Abdullah, M.D.San Leandro, CA 945771497833248
  2. Marc Andrews, M.D.San Leandro, CA 945771588743637
  3. Lewis Baker, M.D.San Leandro, CA 945771912085762
  4. George Brown, M.D.San Leandro, CA 945771174601660
  5. Calder Conner, MDSan Leandro, CA 945771770537433
  6. Brian Cutcliffe, M.D.San Leandro, CA 945771679652721
  7. Robert Fan, M.D.San Leandro, CA 945771316987977
  8. Jay Goldman, M.D.San Leandro, CA 945771427136282

Common questions

What is Adam Brown, DO's NPI number?

Adam Brown, DO's National Provider Identifier (NPI) is 1306208855, issued on Mar 23, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Adam Brown, DO located?

The NPPES record lists a practice address at 2500 Merced St, San Leandro, CA, 94577. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.

How can I verify Adam Brown, DO's license?

NPPES lists California license number 20A17158, 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 Adam Brown, DO prescribe under Medicare Part D?

In 2024, Adam Brown, DO had 137 Medicare Part D claims for 90 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.