NPPES file of Aug 9, 2026

James Grossman, P.A.

Physician Assistant · Santa Rosa, CA

James Grossman, P.A. is a physician assistant with a practice address in Santa Rosa, California, and NPI 1356776355, issued on Sep 9, 2013. Check the license (California 23091, as entered in NPPES) with the California board that licenses this profession; 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
1356776355
Name
James Grossman
Credential
P.A.
Primary taxonomy
Physician Assistant 363A00000X
License number
23091 CA
Self-reported in NPPES; status is on the state search
Practice location
1140 Sonoma Ave, Santa Rosa, CA 95405
Phone
(707) 527-7656
Enumerated
Sep 9, 2013
Record last updated
Jan 3, 2022
Fax
(707) 527-5015
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1140 Sonoma Ave

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

  1. Karen Clark, N.P.Nurse Practitioner1508049594
  2. Natasha Kahl, MDObstetrics & Gynecology Physician1942252911
  3. Madison KimRegistered Nurse1447172762
  4. Michael Lazar, MDUrology Physician1376505180

Verify James Grossman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 23091    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
Find the California license search

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60% fewer Medicare Part D claims than the average physician assistant in 2024

332 Medicare Part D claims for 177 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.

  1. James Grossman332
  2. Specialty average830

Most prescribed

  1. Fluorouracil111 claims
  2. Calcipotriene67 claims
  3. Imiquimod27 claims
  4. Triamcinolone Acetonide17 claims
  5. Clobetasol Propionate16 claims
  6. Fluocinonide12 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.

Physician Assistant providers in California

There are 14,451 physician assistant records in California.

All 14,451 in California → Every provider in Santa Rosa →

Other physician assistant records in California

  1. Marcia -Galbraith, PAStockton, CA1407143274
  2. Danny Abad, PAOrange, CA1477158673
  3. Lea Dominique Abadies, PATustin, CA1124754254
  4. Rea Elizabeth Abaniel, P.A.-CSeal Beach, CA1396173621
  5. Ramina Abbasi, PA-CSignal Hill, CA1093448300
  6. Ariel Abbott, PA-CStockton, CA1780334342
  7. Barrie Abbott, PA-CAnza, CA1861602575
  8. Elizabeth Abbott, PA-CSan Diego, CA1437540762
  9. Terri Abbott, P.A.La Jolla, CA1811165566
  10. Angela Abboud, MMS, PA-CSanta Rosa, CA1114399334

Common questions

What is James Grossman, P.A.'s NPI number?

James Grossman, P.A.'s National Provider Identifier (NPI) is 1356776355, issued on Sep 9, 2013. An NPI identifies a provider in billing; it is not a license.

Where is James Grossman, P.A. located?

The NPPES record lists a practice address at 1140 Sonoma Ave, Santa Rosa, CA, 95405. Phone: (707) 527-7656. Providers update this record themselves, so call before visiting.

How can I verify James Grossman, P.A.'s license?

NPPES lists California license number 23091, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does James Grossman, P.A. prescribe under Medicare Part D?

In 2024, James Grossman, P.A. had 332 Medicare Part D claims for 177 beneficiaries; the average among physician assistant prescribers was 830. 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.

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.