NPPES file of Aug 9, 2026

Thomas A. Bartczak, C.O.

Specialist · Riverside, CA

Thomas A. Bartczak, C.O. is a specialist with a practice address in Riverside, California, and NPI 1366673311, issued on Aug 6, 2009. Check the license with the California board that licenses this profession; 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
1366673311
Name
Thomas A. Bartczak
Credential
C.O.
Primary taxonomy
Specialist 174400000X
Practice location
4013 Brockton Ave, Riverside, CA 92501
Phone
(951) 781-4751
Enumerated
Aug 6, 2009
Record last updated
Aug 6, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(951) 781-3011
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 4013 Brockton Ave

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

  1. Ahmed Obakhume, LCSWClinical Social Worker1295369072

Verify Thomas A. Bartczak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
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Specialist providers in California

There are 5,749 specialist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 5,749 in California → Every provider in Riverside →

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  2. Erlinda Abcede, M.D.Cudahy, CA1831228675
  3. Maher Abdallah, M.D.Palm Springs, CA1205988011
  4. Farinaz AbdiSan Marcos, CA1063153963
  5. Mai Abe, LESanta Monica, CA1609405158
  6. Hamid Abedi, HEARING AID SPECIALISan Diego, CA1659410744
  7. Jonas AbellaSan Francisco, CA1679760938
  8. Shreedhar Abhyankar, M.D.Indio, CA1861530669
  9. Elaine AbichRiverside, CA1780458927
  10. Mussarat Abidi, MDLadera Ranch, CA1053307769

Common questions

What is Thomas A. Bartczak, C.O.'s NPI number?

Thomas A. Bartczak, C.O.'s National Provider Identifier (NPI) is 1366673311, issued on Aug 6, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Thomas A. Bartczak, C.O. located?

The NPPES record lists a practice address at 4013 Brockton Ave, Riverside, CA, 92501. Phone: (951) 781-4751. Providers update this record themselves, so call before visiting.

How can I verify Thomas A. Bartczak, C.O.'s license?

Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.