Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Jason Olszewski

Individual provider Physician Assistant · NPI 1548458128

Jason Olszewski is a Physician Assistant in Baltimore, Maryland. Qualified in 2007, 19 years ago. Practices with Patient First Maryland Medical Group PLLC, a 255-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
19
Licensed in
MD
In the registry since
2007

Practice location Address checks out

5100 Eastern Ave
Baltimore, MD 21224-2772
Phone: (410) 814-4500
Show map & directions

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

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence C0003608 (MD)

Record details

NPI number1548458128
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedOctober 9, 2007
Last updated in NPPESMarch 7, 2022
Certification dateMarch 7, 2022

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Patient First Maryland Medical Group Pllc — 255 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations12 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,076
Services billed 3,366 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Patient First Maryland Medical Group PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 255 clinicians in the practice; 12 are shown here.

Other providers in Baltimore