Registry data as of Aug 27, 2026

John Katzen, M.D.

Plastic Surgery Physician · Beverly Hills, CA

John Katzen, M.D. is a plastic surgery physician with a practice address in Beverly Hills, California, and NPI 1922146125, issued on Feb 1, 2007. Check the license (California G85745, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1922146125
Name
John Katzen
Credential
M.D.
Primary taxonomy
Plastic Surgery Physician 208200000X
License number
G85745 CA
Self-reported in NPPES; status is on the state search
Practice location
9735 Wilshire Blvd, Beverly Hills, CA 90212
Phone
(310) 859-7770
Enumerated
Feb 1, 2007
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 9735 Wilshire Blvd

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

  1. Dana Adams, DDSDentist1720108954
  2. Sourpik Avakian, MDFamily Medicine Physician1699863555
  3. Talia Barkhordari, PA-CPhysician Assistant1104498757
  4. Earl Bercovitch, DDSGeneral Practice Dentistry1437277647
  5. Pradip Doshi, D.D.S.General Practice Dentistry1174721849
  6. Maziyar Ebrahimi, DMDEndodontics1699939702

Verify John Katzen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G85745
    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.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

52% fewer Medicare Part D claims than the average plastic surgery physician in 2024

42 Medicare Part D claims for 11 beneficiaries, against an average of 88 among the 3,293 providers of this specialty who prescribed in Part D.

  1. John Katzen42
  2. Specialty average88

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: $33.21

1 payment, mostly food and beverage; the largest payer was Vertex Pharmaceuticals Incorporated. The 3,398 providers of this specialty with any payment received $5,480.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. John Katzen$33.21
  2. Specialty average$5,480.65

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

79 plastic surgery physician records list a Beverly Hills practice address

They are 79 of the 3,433 NPPES records with a Beverly Hills practice address, and 813 plastic surgery physician records in California.

Other plastic surgery physician records in California

  1. Salma Abdou, MDLos Angeles, CA1679033237
  2. Ruben Abrams, MDBeverly Hills, CA1063549491
  3. Boris Ackerman, M.D.Newport Beach, CA1295829802
  4. Jan Adams, M.D.Fountain Valley, CA1427499904
  5. Oluwaseun Adetayo, M.D.Loma Linda, CA1710190285
  6. Ghada Afifi, M.D.Loma Linda, CA1760573349
  7. Omar Ahmed, MDPasadena, CA1104970540
  8. William Aiello, M.D.Los Alamitos, CA1952590739
  9. Andre Alcon, M.D.Walnut Creek, CA1134513500
  10. John Alexander, MDSan Diego, CA1558467316

Common questions

What is John Katzen, M.D.'s NPI number?

John Katzen, M.D.'s National Provider Identifier (NPI) is 1922146125, issued on Feb 1, 2007. An NPI identifies a provider in billing; it is not a license.

Where is John Katzen, M.D. located?

The NPPES record lists a practice address at 9735 Wilshire Blvd, Beverly Hills, CA, 90212. Phone: (310) 859-7770. Providers update this record themselves, so call before visiting.

How can I verify John Katzen, M.D.'s license?

NPPES lists California license number G85745, 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 John Katzen, M.D. prescribe under Medicare Part D?

In 2024, John Katzen, M.D. had 42 Medicare Part D claims for 11 beneficiaries; the average among plastic surgery physician prescribers was 88. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.