NPPES file of Aug 9, 2026

Mark J. Popovich, M.D.

Diagnostic Radiology Physician · Santa Rosa, CA

Mark J. Popovich, M.D. is a diagnostic radiology physician with a practice address in Santa Rosa, California, and NPI 1245320704, issued on Oct 13, 2006. Check the license (California G57995, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1245320704
Name
Mark J. Popovich
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
G57995 CA
Self-reported in NPPES; status is on the state search
Practice location
3883 Airway Dr Ste 100, Santa Rosa, CA 95403
Phone
(707) 521-4480
Enumerated
Oct 13, 2006
Record last updated
Aug 26, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(707) 521-4460
Medicaid ID
00G579950 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.
Download card Updates feed

Also registered at 3883 Airway Dr Ste 100

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

  1. Linda Casey, MDDiagnostic Radiology Physician1356364475
  2. Durba Dutta, MDDiagnostic Radiology Physician1053342212
  3. Nicholas Kujala, M.D.Diagnostic Radiology Physician1689803025
  4. Steven Rockoff, M.D.Diagnostic Radiology Physician1336481886
  5. Anthony Sajewicz, M.D.Diagnostic Radiology Physician1982745964

Verify Mark J. Popovich in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G57995
    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Mark J. Popovich among 4,500 diagnostic radiology physician records in California

Mark J. Popovich, M.D. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 52% newer
  • In a Medicare fileNo · 74% of these records are
  • In the CMS Doctors and Clinicians fileNo · 70% of these records are
  • Record last updated2019 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Diagnostic Radiology Physician providers in California

There are 4,500 diagnostic radiology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Shirley Beshany, MDSanta Rosa, CA 954031689740292
  2. Wolfgang Bley, MDSanta Rosa, CA 954031548344534
  3. Linda Casey, MDSanta Rosa, CA 954031356364475
  4. Durba Dutta, MDSanta Rosa, CA 954031053342212
  5. Stephen Eisenberg, MDSanta Rosa, CA 954031225112204
  6. Titus Koenig, MDSanta Rosa, CA 954031932283934
  7. Kavita Mamtora, MDSanta Rosa, CA 954031740364728
  8. Daniel Penn, MDSanta Rosa, CA 954031578647566

Common questions

What is Mark J. Popovich, M.D.'s NPI number?

Mark J. Popovich, M.D.'s National Provider Identifier (NPI) is 1245320704, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark J. Popovich, M.D. located?

The NPPES record lists a practice address at 3883 Airway Dr Ste 100, Santa Rosa, CA, 95403. Phone: (707) 521-4480. Providers update this record themselves, so call before visiting.

How can I verify Mark J. Popovich, M.D.'s license?

NPPES lists California license number G57995, 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. 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.