Maria A. Trees, PA-C
Medical Physician Assistant · Harrisburg, PA
Maria A. Trees, PA-C is a medical physician assistant with a practice address in Harrisburg, Pennsylvania, and NPI 1013015866, issued on Sep 20, 2006. Check the license (Pennsylvania MA002687L, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maria A. Trees
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- MA002687L PA
Self-reported in NPPES; status is on the state search - Practice location
- 845 Sir Thomas Court, Harrisburg, PA 17109
- Phone
- (717) 651-5800
- Enumerated
- Sep 20, 2006
- Record last updated
- May 13, 2026
- Medicare enrollment
- Enrolled (PECOS I20050331000417); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,897 in Pennsylvania → Look up another NPI →
Also registered at 845 Sir Thomas Court
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Miroslaw Gardyasz, M.D.Pediatrics Physician1093798621
- Michael Krall, D.O.Pediatrics Physician1083697619
- Jamie Walters, P.A.Medical Physician Assistant1578718169
Verify Maria A. Trees in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license MA002687LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average medical physician assistant in 2024
2,299 Medicare Part D claims for 551 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 1,110 claims were for opioids.
Most prescribed
- Oxycodone Hcl280 claims
- Hydrocodone-Acetaminophen268 claims
- Oxycodone-Acetaminophen186 claims
- Tramadol Hcl113 claims
- Atorvastatin Calcium97 claims
- Morphine Sulfate Er93 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Morganstein DE Falcis Rehabilitation Institute LLCHarrisburg, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria A. Trees among 3,897 medical physician assistant records in Pennsylvania
Maria A. Trees, PA-C is one of 3,897 medical physician assistant records with a practice address in Pennsylvania. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 81% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1998 · median 2015 among the 2,467 with a school on file
- Record last updated2026 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 medical physician assistant records list a practice address in Harrisburg
They are 56 of the 3,963 NPPES records with a practice address in Harrisburg, and 3,897 medical physician assistant records in Pennsylvania.
All 3,897 in Pennsylvania → Every provider in Harrisburg → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Toby Catone, PHYSICIAN ASSISTANTHarrisburg, PA 171091114041167
- Maria Hartz, PA-CHarrisburg, PA 171091073993762
- Michele Karczewski, PA-CHarrisburg, PA 171091629189428
- Ashley Karli, PA-CHarrisburg, PA 171091407282163
- Christine Ludwick, PACHarrisburg, PA 171091477650448
- Melinda McClure, PA-CHarrisburg, PA 171091902289549
- Sheila McGinnis, PA-CHarrisburg, PA 171091295824712
- Alicia Mills, PA-CHarrisburg, PA 171091801116082
Common questions
What is Maria A. Trees, PA-C's NPI number?
Maria A. Trees, PA-C's National Provider Identifier (NPI) is 1013015866, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maria A. Trees, PA-C located?
The NPPES record lists a practice address at 845 Sir Thomas Court, Harrisburg, PA, 17109. Phone: (717) 651-5800. Providers update this record themselves, so call before visiting.
How can I verify Maria A. Trees, PA-C's license?
NPPES lists Pennsylvania license number MA002687L, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does Maria A. Trees, PA-C prescribe under Medicare Part D?
In 2024, Maria A. Trees, PA-C had 2,299 Medicare Part D claims for 551 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is Maria A. Trees, PA-C's MIPS final score?
The 2023 MIPS final score is 84.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.