NPPES file of Aug 9, 2026

Jack Waxman, M.D.

Rheumatology Physician · Santa Rosa, CA

Jack Waxman, M.D. is a rheumatology physician with a practice address in Santa Rosa, California, and NPI 1104824994, issued on Jul 14, 2005. Check the license (California G23398, 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
1104824994
Name
Jack Waxman
Credential
M.D.
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
G23398 CA
Self-reported in NPPES; status is on the state search
Practice location
4015 Quartz Dr, Santa Rosa, CA 95405
Phone
(707) 481-7215
Enumerated
Jul 14, 2005
Record last updated
Mar 27, 2024
Medicaid ID
00G233980 CA
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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8 nearest rheumatology physician records → All 926 in California → Look up another NPI →

Verify Jack Waxman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G23398    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

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98% fewer Medicare Part D claims than the average rheumatology physician in 2024

35 Medicare Part D claims, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.

  1. Jack Waxman35
  2. Specialty average1,978

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.

Industry payments in 2024: $998.16

19 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jack Waxman$998.16
  2. Specialty average$8,538.33

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Jack Waxman among 926 rheumatology physician records in California

Jack Waxman, M.D. is one of 926 rheumatology 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 94% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2024 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Rheumatology Physician providers in California

There are 926 rheumatology physician records in California.

All 926 in California → Every provider in Santa Rosa → Rheumatology Physician nationwide →

The 8 rheumatology physician records with the nearest ZIP codes

  1. Lisa Kremer, M.D.Santa Rosa, CA 954051144262213
  2. Donald Whisler, M.D.Santa Rosa, CA 954051639516149
  3. Todd Hofeling, M.D.Santa Rosa, CA 954031447451935
  4. Khashayar Khosraviani, MDSanta Rosa, CA 954031144592205
  5. David Maniscalco, M.D.Santa Rosa, CA 954031386031268
  6. Richard Zweig, MDSanta Rosa, CA 954031124102298
  7. Iraj Sabahi, M.D.Turlock, CA 953821881886042
  8. Sahdev Saharan, M.D.Tracy, CA 953761588875512

Common questions

What is Jack Waxman, M.D.'s NPI number?

Jack Waxman, M.D.'s National Provider Identifier (NPI) is 1104824994, issued on Jul 14, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Jack Waxman, M.D. located?

The NPPES record lists a practice address at 4015 Quartz Dr, Santa Rosa, CA, 95405. Phone: (707) 481-7215. Providers update this record themselves, so call before visiting.

How can I verify Jack Waxman, M.D.'s license?

NPPES lists California license number G23398, 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 Jack Waxman, M.D. prescribe under Medicare Part D?

In 2024, Jack Waxman, M.D. had 35 Medicare Part D claims; the average among rheumatology physician prescribers was 1,978. 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.