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

Mary Elizabeth Massari, PT

Individual provider Physical Therapist · NPI 1770692600

Mary Elizabeth Massari, PT is registered under Physical Therapist in Private Practice in Catonsville, Maryland. Qualified in 1983, 43 years ago. Practices with Centers for Advanced Orthopaedics LLC, a 598-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
43
Licensed in
MD
In the registry since
2006
What do these letters mean?
PT — Physical Therapist
A licensed therapist who treats movement, pain and injury.

See every abbreviation used in this directory →

Practice location Address checks out

910 Frederick Rd
Catonsville, MD 21228-4516
Phone: (410) 644-1880
Fax: (410) 646-3623
Show map & directions

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

Additional practice locations (1)

  • 3421 Benson Ave, Baltimore, MD 21227-1056 — (410) 644-1880

Specialties & licences

Physical Therapist (primary) Taxonomy 225100000X · Licence 15465 (MD)

Record details

NPI number1770692600
Entity typeIndividual (Type 1)
GenderFemale
Credentials PT
Sole proprietorNo
NPI enumeratedAugust 30, 2006
Last updated in NPPESFebruary 28, 2024
Certification dateFebruary 28, 2024

Medicare enrollment

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

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 1983 (43 years in practice)
Group practice Centers For Advanced Orthopaedics Llc — 598 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients74
Services billed 2,041 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 Centers for Advanced Orthopaedics LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 598 clinicians in the practice; 12 are shown here.

Other providers in Catonsville