Maria Trees, PA-C
NPI 1013015866 · Medical Physician Assistant · Harrisburg, PA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Trees, PA-C is a Medical Physician Assistant provider in Harrisburg, PA (NPI 1013015866).
Provider details
- NPI number
- 1013015866
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- MA002687L (PA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,735 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,306 | $66 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 171 | $101 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 122 | $96 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 110 | $145 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 26 | $41 |
Typical Medicare-allowed amounts for these services range $41–$145 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 280 | 115 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 268 | 108 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 186 | 67 |
| Tramadol Hcl | 113 | 62 |
| Atorvastatin Calcium | 97 | 43 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 93 |
Practice location
Mailing address
Additional practice locations (1)
- 815 Sir Thomas Ct Ste 200Harrisburg, PA 17109-4839Phone: (717) 724-0720Fax: (717) 724-0730
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2026-05-13
- Certified
- 2026-05-13
Frequently asked questions
- What is Maria Trees's NPI number?
- Maria Trees's National Provider Identifier (NPI) is 1013015866, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Trees's specialty?
- Maria Trees is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maria Trees located?
- Maria Trees's practice location on file with NPPES is 845 Sir Thomas Court, Harrisburg, PA 17109.
- What is Maria Trees's phone number?
- The practice phone number listed in the NPPES registry for Maria Trees is (717) 651-5800.
- Does Maria Trees accept Medicare?
- Maria Trees is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Trees's NPI active?
- Yes — Maria Trees's NPI (1013015866) is active in the NPPES registry as of the last update on 2026-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.