Registry data as of Aug 27, 2026

Marek Grzybowski, P.T.

Physical Therapist · Sonoma, CA

Marek Grzybowski, P.T. is a physical therapist with a practice address in Sonoma, California, and NPI 1205256443, issued on Apr 25, 2014. Check the license (California 33724, as entered in NPPES) 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
1205256443
Name
Marek Grzybowski
Credential
P.T.
Primary taxonomy
Physical Therapist 225100000X
License number
33724 CA
Self-reported in NPPES; status is on the state search
Practice location
347 Andrieux St, Sonoma, CA 95476
Phone
(707) 935-5345
Enumerated
Apr 25, 2014
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 347 Andrieux St

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

  1. Patricia Brooks, PHD. LCSWMental Health Counselor1235268988
  2. Daryl Chinn, M.D.Diagnostic Radiology Physician1427097286
  3. Erick French, MDEmergency Medicine Physician1649206806
  4. Leslie Graham, M.D.Emergency Medicine Physician1841463346
  5. Jared Hubbell, M.D.Family Medicine Physician1538387428
  6. Eric HummelCertified Respiratory Therapist1700496577

Verify Marek Grzybowski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 33724
    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
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 →

15 physical therapist records list a Sonoma practice address

They are 15 of the 395 NPPES records with a Sonoma practice address, and 22,359 physical therapist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other physical therapist records in California

  1. Jennifer Aanestad, PTPinole, CA1033786215
  2. Sarah Aaron, DPTManhattan Beach, CA1275270282
  3. Alexander Abad, M.P.T.San Francisco, CA1790848505
  4. Edgar Fernando Abad, P.T.Pasadena, CA1982784542
  5. Trisha Abad-GarciaCastro Valley, CA1316284664
  6. Joseph Abano, PT, DPTGlendale, CA1376298968
  7. Jennifer Abanto, RPTPasadena, CA1992476501
  8. Peter John Abanto, PTSan Diego, CA1760367460
  9. Leslie Abarca, DPTLos Angeles, CA1518890383
  10. Valeria Abarca, DPTMission Viejo, CA1164024683

Common questions

What is Marek Grzybowski, P.T.'s NPI number?

Marek Grzybowski, P.T.'s National Provider Identifier (NPI) is 1205256443, issued on Apr 25, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Marek Grzybowski, P.T. located?

The NPPES record lists a practice address at 347 Andrieux St, Sonoma, CA, 95476. Phone: (707) 935-5345. Providers update this record themselves, so call before visiting.

How can I verify Marek Grzybowski, P.T.'s license?

NPPES lists California license number 33724, as entered by the provider. 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.

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.