NPPES file of Aug 9, 2026

Jason Kessler, MD

Pain Medicine (Physical Medicine & Rehabilitation) Physician · San Mateo, CA

Jason Kessler, MD is a pain medicine (physical medicine & rehabilitation) physician with a practice address in San Mateo, California, and NPI 1467074930, issued on May 7, 2020. Check the license (California A195223, 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
1467074930
Name
Jason Kessler
Credential
MD
Primary taxonomy
Pain Medicine (Physical Medicine & Rehabilitation) Physician 2081P2900X
License number
A195223 CA
Self-reported in NPPES; status is on the state search
Practice location
1900 Ofarrell St Ste 190, San Mateo, CA 94403
Phone
(650) 306-9490
Enumerated
May 7, 2020
Record last updated
Oct 2, 2025
Fax
(650) 306-0250
Medicare enrollment
Enrolled (PECOS I20251016002460); 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 1900 Ofarrell St Ste 190

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

  1. Neeti Bathia, MDSports Medicine (Physical Medicine & Rehabilitation) Physician1295930907
  2. Rachel Brinitzer, RN, FNP-CFamily Nurse Practitioner1609416593
  3. Priyanka Ghosh, M.D.Pain Medicine (Anesthesiology) Physician1558756791
  4. Catherine HickeyPhysician Assistant1598232134
  5. Joseph KrezanoskiFamily Nurse Practitioner1518507409

Verify Jason Kessler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A195223
    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 2 group practices

  1. Remedy Medical GroupSan Mateo, CA
  2. Sharwin Tafazoli IncCulver City, CA

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

Jason Kessler among 290 pain medicine (physical medicine & rehabilitation) physician records in California

Jason Kessler, MD is one of 290 pain medicine (physical medicine & rehabilitation) physician records with a practice address in California. 85% 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 93% of them.

  • NPI issued2020 · 93% of these records are older, 2% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2020 · median 2005 among the 196 with a school on file
  • Record last updated2025 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2081P2900X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pain Medicine (Physical Medicine & Rehabilitation) Physician providers in California

There are 290 pain medicine (physical medicine & rehabilitation) physician records in California.

The 8 pain medicine (physical medicine & rehabilitation) physician records with the nearest ZIP codes

  1. Hoyman Hong, M.D.San Mateo, CA 944011124120845
  2. Alpana Gowda, MDStanford, CA 943051366575003
  3. Ming-Chih Kao, MDStanford, CA 943051922282870
  4. Dhiruj Kirpalani, M.D.Stanford, CA 943051477747160
  5. Joshua Levin, MDStanford, CA 943051528182532
  6. James Rhee, MDStanford, CA 943051629074364
  7. Joshua Rittenberg, MDStanford, CA 943051447266911
  8. Vivian Shih, MDStanford, CA 943051386755338

Common questions

What is Jason Kessler, MD's NPI number?

Jason Kessler, MD's National Provider Identifier (NPI) is 1467074930, issued on May 7, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Jason Kessler, MD located?

The NPPES record lists a practice address at 1900 Ofarrell St Ste 190, San Mateo, CA, 94403. Phone: (650) 306-9490. Providers update this record themselves, so call before visiting.

How can I verify Jason Kessler, MD's license?

NPPES lists California license number A195223, 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.