NPPES file of Aug 9, 2026

Seth Michael Katzen, DO

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

Seth Michael Katzen, DO is a pain medicine (physical medicine & rehabilitation) physician with a practice address in San Diego, California, and NPI 1164942223, issued on Jun 21, 2017. Check the license (California 20A18027, 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
1164942223
Name
Seth Michael Katzen
Credential
DO
Primary taxonomy
Pain Medicine (Physical Medicine & Rehabilitation) Physician 2081P2900X
License number
20A18027 CA
Self-reported in NPPES; status is on the state search
Practice location
9333 Genesee Ave Ste 350, San Diego, CA 92121
Phone
(858) 455-6460
Enumerated
Jun 21, 2017
Record last updated
Aug 3, 2022
Medicare enrollment
Enrolled (PECOS I20221010002400); accepts Medicare assignment
Medical or professional school
Marian University College Of Osteopathic Medicine, 2017
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 9333 Genesee Ave Ste 350

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

  1. Alexis Espinoza, PA-CPhysician Assistant1851129514
  2. Michael Kimball, M.D.Pediatric Orthopaedic Surgery Physician1588648653
  3. Alexandra Pyle, PA-CPhysician Assistant1225416472
  4. Neil Tayyab, M.D.Orthopaedic Surgery of the Spine Physician1831149970

Verify Seth Michael 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 20A18027
    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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97% fewer Medicare Part D claims than the average pain medicine (physical medicine & rehabilitation) physician in 2024

39 Medicare Part D claims for 21 beneficiaries, against an average of 1,479 among the 1,457 providers of this specialty who prescribed in Part D. 21 claims were for opioids.

  1. Seth Katzen39
  2. Specialty average1,479

Most prescribed

  1. Hydrocodone-Acetaminophen14 claims
  2. Gabapentin12 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.

Industry payments in 2024: $4,656.44

82 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 1,126 providers of this specialty with any payment received $2,193.30 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Seth Katzen$4,656.44
  2. Specialty average$2,193.30

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

Bills Medicare through one group practice

  1. Zachary C Cohen MD ApcSan Diego, CA

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

Seth Michael Katzen among 290 pain medicine (physical medicine & rehabilitation) physician records in California

Seth Michael Katzen, DO 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 2017, is newer than 83% of them.

  • NPI issued2017 · 83% of these records are older, 14% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2017 · median 2005 among the 196 with a school on file
  • Record last updated2022 · 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. Daniel Stuart, MDSan Diego, CA 921211326203605
  2. Marcia Elfenbaum, M.D.San Diego, CA 921231184640583
  3. Saiyun Hou, M.D., PH.DSan Diego, CA 921231326464660
  4. Alan Hurschman, M.D.San Diego, CA 921231326031980
  5. John Jahan, M.D.San Diego, CA 921231326006941
  6. John Qian, M.D.San Diego, CA 921231649290891
  7. Walter Strauser, M.D.San Diego, CA 921231518957521
  8. Timothy Chong, M.D.San Diego, CA 921281992901219

Common questions

What is Seth Michael Katzen, DO's NPI number?

Seth Michael Katzen, DO's National Provider Identifier (NPI) is 1164942223, issued on Jun 21, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Seth Michael Katzen, DO located?

The NPPES record lists a practice address at 9333 Genesee Ave Ste 350, San Diego, CA, 92121. Phone: (858) 455-6460. Providers update this record themselves, so call before visiting.

How can I verify Seth Michael Katzen, DO's license?

NPPES lists California license number 20A18027, 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 Seth Michael Katzen, DO prescribe under Medicare Part D?

In 2024, Seth Michael Katzen, DO had 39 Medicare Part D claims for 21 beneficiaries; the average among pain medicine (physical medicine & rehabilitation) physician prescribers was 1,479. 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.