Mary Grassi
Occupational Therapist · Pittsburgh, PA
Mary Grassi is an occupational therapist with a practice address in Pittsburgh, Pennsylvania, and NPI 1841411832, issued on May 1, 2007. Check the license (Pennsylvania OC000466L, as entered in NPPES) with the Pennsylvania board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mary Grassi
- Primary taxonomy
- Occupational Therapist 225X00000X
- License number
- OC000466L PA
Self-reported in NPPES; status is on the state search - Practice location
- 4146 Library Road, Pittsburgh, PA 15234
- Phone
- (412) 833-6663
- Enumerated
- May 1, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest occupational therapist records → All 7,136 in Pennsylvania → Look up another NPI →
Also registered at 4146 Library Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Darlene DunhamOccupational Therapy Assistant1972724961
- Tamra FordyceOccupational Therapist1225259211
- Mark HankinPhysical Therapist1750502746
- Suzanne HigginsOccupational Therapy Assistant1467673459
- Connie HoekeOccupational Therapist1265653265
- Marie JanoskiOccupational Therapy Assistant1356562359
Verify Mary Grassi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license OC000466LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mary Grassi among 7,136 occupational therapist records in Pennsylvania
Mary Grassi is one of 7,136 occupational therapist records with a practice address in Pennsylvania. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 7% of them.
- NPI issued2007 · 7% of these records are older, 80% newer
- In a Medicare fileNo · 8% of these records are
- In the CMS Doctors and Clinicians fileNo · 9% of these records are
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225X00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
641 occupational therapist records list a practice address in Pittsburgh
They are 641 of the 28,866 NPPES records with a practice address in Pittsburgh, and 7,136 occupational therapist records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,136 in Pennsylvania → Every provider in Pittsburgh → Occupational Therapist nationwide →
The 8 occupational therapist records with the nearest ZIP codes
- Christine ChurmaPittsburgh, PA 152341265653240
- Tamra FordycePittsburgh, PA 152341225259211
- Connie HoekePittsburgh, PA 152341265653265
- Cindy HoffmanPittsburgh, PA 152341376764365
- Joy Holte, MOT, OTRPittsburgh, PA 152341144354929
- Shwetha KamathPittsburgh, PA 152341174744171
- Lisa KarnerPittsburgh, PA 152341508087503
- Vanessa Keech Doherty, OTRPittsburgh, PA 152341073635447
Common questions
What is Mary Grassi's NPI number?
Mary Grassi's National Provider Identifier (NPI) is 1841411832, issued on May 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mary Grassi located?
The NPPES record lists a practice address at 4146 Library Road, Pittsburgh, PA, 15234. Phone: (412) 833-6663. Providers update this record themselves, so call before visiting.
How can I verify Mary Grassi's license?
NPPES lists Pennsylvania license number OC000466L, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.