Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Maciej G. Ossowski, MD, Inc

Organization Family Medicine Physician · NPI 1740575182

Maciej G. Ossowski, MD, Inc provides Family Medicine Physician services in Merced, California. Licensed in California. Registered with an NPI since 2011.

Licensed in
CA
In the registry since
2011
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

3349 G St Ste D
Merced, CA 95340-0978 Not confirmed with CMS for 14 years — call before visiting
Phone: (209) 722-8040
Fax: (209) 722-0287
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence A38380 (CA)

Record details

NPI number1740575182
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Maciej Ossowski — President · (209) 722-8040
NPI enumeratedJune 14, 2011
Last updated in NPPESJuly 20, 2012
Mailing address3349 G St Ste D, Merced, CA 95340-0978

Other providers in Merced