Marek Mateusz Kowalski
Hospitalist Physician · Santa Monica, CA
Marek Mateusz Kowalski is a hospitalist physician with a practice address in Santa Monica, California, and NPI 1720665409, issued on Mar 27, 2021. Check the license (California A186720, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marek Mateusz Kowalski
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A186720 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1250 16TH St # C2304, Santa Monica, CA 90404
- Phone
- (310) 319-4698
- Enumerated
- Mar 27, 2021
- Record last updated
- Jul 2, 2024
- Medicare enrollment
- Enrolled (PECOS I20240621003570); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 1250 16TH St # C2304
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Farid Abdelmalak, M.D.Hospitalist Physician1912392937
- Rasha Ahmed, DOInternal Medicine Physician1932631793
- Kaye Alpasan, NPNurse Practitioner1245098821
- Ishan Asokan, MD, MSCInternal Medicine Physician1699204271
- Rose Bates, NPNurse Practitioner1194263129
- Wossen Belachew, MDHospitalist Physician1831532266
Verify Marek Mateusz Kowalski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A186720Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marek Mateusz Kowalski among 3,099 hospitalist physician records in California
Marek Mateusz Kowalski is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 90% of them.
- NPI issued2021 · 90% of these records are older, 6% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2021 · median 2010 among the 2,505 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
96 hospitalist physician records list a practice address in Santa Monica
They are 96 of the 5,151 NPPES records with a practice address in Santa Monica, and 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Santa Monica → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Spencer Adams, MDSanta Monica, CA 904041487688198
- Nathan Cox, M.D.Santa Monica, CA 904041912173378
- Erin Dowling, M.D.Santa Monica, CA 904041568645901
- Retha GoodglickSanta Monica, CA 904041396994034
- Adela Greeley, M.D.Santa Monica, CA 904041205968492
- David Kagan, MDSanta Monica, CA 904041992965768
- Russell KerbelSanta Monica, CA 904041164699203
- Mike La, M.D.Santa Monica, CA 904041790949535
Common questions
What is Marek Mateusz Kowalski's NPI number?
Marek Mateusz Kowalski's National Provider Identifier (NPI) is 1720665409, issued on Mar 27, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Marek Mateusz Kowalski located?
The NPPES record lists a practice address at 1250 16TH St # C2304, Santa Monica, CA, 90404. Phone: (310) 319-4698. Providers update this record themselves, so call before visiting.
How can I verify Marek Mateusz Kowalski's license?
NPPES lists California license number A186720, 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. 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.