NPPES file of Aug 9, 2026

Jaan Hasan

Emergency Medicine Physician · Oakland, CA

Jaan Hasan is an emergency medicine physician with a practice address in Oakland, California, and NPI 1144883075, issued on Apr 16, 2019. Check the license (California A184752, 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
1144883075
Name
Jaan Hasan
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A184752 CA
Self-reported in NPPES; status is on the state search
Practice location
350 Hawthorne Ave, Oakland, CA 94609
Phone
(510) 655-4000
Enumerated
Apr 16, 2019
Record last updated
Jun 21, 2023
Medicare enrollment
Enrolled (PECOS I20230629003898); 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 350 Hawthorne Ave

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

  1. Monique Adams, PT, DPTPhysical Therapist1376190405
  2. Muhammad AkramStudent in an Organized Health Care Education/Training Program1568265106
  3. Saja Al Araji, MDStudent in an Organized Health Care Education/Training Program1942052139
  4. Daniah Al-Sabbagh, MDStudent in an Organized Health Care Education/Training Program1588415152
  5. Lara AliStudent in an Organized Health Care Education/Training Program1871433714
  6. Olga Anikina, MDHospitalist Physician1619110954

Verify Jaan Hasan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A184752
    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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40% more Medicare Part D claims than the average emergency medicine physician in 2024

317 Medicare Part D claims for 215 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 27 claims were for opioids.

  1. Jaan Hasan317
  2. Specialty average226

Most prescribed

  1. Ibuprofen43 claims
  2. Cefdinir25 claims
  3. Ondansetron Odt25 claims
  4. Hydrocodone-Acetaminophen24 claims
  5. Cephalexin18 claims
  6. Famotidine16 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. Berkeley Emergency Medical Group IncBerkeley, CA

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

Jaan Hasan among 7,751 emergency medicine physician records in California

Jaan Hasan 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 2019, is newer than 85% of them.

  • NPI issued2019 · 85% of these records are older, 12% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2019 · median 2011 among the 4,560 with a school on file
  • Record last updated2023 · 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).

247 emergency medicine physician records list a practice address in Oakland

They are 247 of the 18,558 NPPES records with a practice address in Oakland, and 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Ronn Berrol, MDOakland, CA 946091316995889
  2. John Burke, MDOakland, CA 946091740239953
  3. Stephen Chin, MDOakland, CA 946091760458954
  4. Thomas Dalton, MDOakland, CA 946091336376243
  5. Christopher Dutra, MDOakland, CA 946091306804661
  6. Dylan Easley, MDOakland, CA 946091407966260
  7. Laura Foster, MDOakland, CA 946091609824127
  8. Robert Golomb, MDOakland, CA 946091831148048

Common questions

What is Jaan Hasan's NPI number?

Jaan Hasan's National Provider Identifier (NPI) is 1144883075, issued on Apr 16, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Jaan Hasan located?

The NPPES record lists a practice address at 350 Hawthorne Ave, Oakland, CA, 94609. Phone: (510) 655-4000. Providers update this record themselves, so call before visiting.

How can I verify Jaan Hasan's license?

NPPES lists California license number A184752, 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 Jaan Hasan prescribe under Medicare Part D?

In 2024, Jaan Hasan had 317 Medicare Part D claims for 215 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.