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

Individual provider Physician Assistant · NPI 1417204496

Mariusz Olesiak, PA-C is a Physician Assistant in Boston, Massachusetts. Qualified in 2011, 15 years ago. Practices with Boston University General Surgical Associates, Inc, a 85-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
15
Licensed in
MA
In the registry since
2012
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

725 Albany St Shapiro Lowr Level
Boston, MA 02118
Phone: (617) 638-6287
Fax: (617) 638-6284
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA4408 (MA)

Record details

NPI number1417204496
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorNo
NPI enumeratedAugust 9, 2012
Last updated in NPPESMarch 4, 2015

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Boston University General Surgical Associates, Inc. — 85 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Boston