Registry data as of Aug 27, 2026

Dirk Frankenberger, CPO

Prosthetist · Castro Valley, CA

Dirk Frankenberger, CPO is a prosthetist with a practice address in Castro Valley, California, and NPI 1366092892, issued on Sep 17, 2019. 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, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1366092892
Name
Dirk Frankenberger
Credential
CPO
Primary taxonomy
Prosthetist 224P00000X
Practice location
19845 Lake Chabot RD Ste 302, Castro Valley, CA 94546
Phone
(510) 537-1210
Enumerated
Sep 17, 2019
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 19845 Lake Chabot RD Ste 302

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

  1. Hunter AmundsonProsthetist1427608694
  2. Christian Rae Posadas, CPOOrthotist1629628243

Verify Dirk Frankenberger 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
Find 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 →

Prosthetist providers in California

There are 190 prosthetist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 190 in California → Every provider in Castro Valley →

Other prosthetist records in California

  1. Leslie AllenSan Rafael, CA1780267963
  2. Randall Alley, BSC, CPWestlake Village, CA1356579668
  3. Janine Amell, CPO, MSPOEl Centro, CA1275187502
  4. Hunter AmundsonCastro Valley, CA1427608694
  5. Scott Annis, MSPO, CPOSan Francisco, CA1669932372
  6. Daniel Ballarin, CPOSan Francisco, CA1376975672
  7. Leshi BarnesRiverside, CA1588022131
  8. Dean Barrett, CPGrass Valley, CA1346437332
  9. Kenya'Michelle BeaversWest Hollywood, CA1881261287
  10. Teresa Beckley, CRANIAL SPECIALISTFontana, CA1225716301

Common questions

What is Dirk Frankenberger, CPO's NPI number?

Dirk Frankenberger, CPO's National Provider Identifier (NPI) is 1366092892, issued on Sep 17, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Dirk Frankenberger, CPO located?

The NPPES record lists a practice address at 19845 Lake Chabot RD Ste 302, Castro Valley, CA, 94546. Phone: (510) 537-1210. Providers update this record themselves, so call before visiting.

How can I verify Dirk Frankenberger, CPO'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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

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.