Quick answers
- Does Maria C. Harkness accept Medicare assignment?
- Yes. Medicare's clinician data says Maria C. Harkness accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Maria C. Harkness see?
- In 2024, CMS data shows 191 Original Medicare patients and 459 services for Maria C. Harkness. This counts Original Medicare only and measures volume, not quality.
- What is Maria C. Harkness's NPI number?
- 1902277767. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Maria C. Harkness, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 191 |
|---|---|
| Services billed to Medicare | 459 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)196 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)37 services
- Urinalysis, manual test (81002)30 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)24 services
- Administration of influenza virus vaccine (G0008)23 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure74%
- High cholesterol73%
- Arthritis43%
- Depression27%
- Ischemic heart disease26%
- Anxiety24%
Hospitals where Maria C. Harkness works
Medicare's Facility Affiliation Data lists Maria C. Harkness at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Bryn Mawr HospitalBryn Mawr, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390139
- Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390111
- Main Line Hospital LankenauWynnewood, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390195
- Pennsylvania HospitalPhiladelphia, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390226
Practice locations
Addresses where Maria C. Harkness is enrolled with Medicare (CMS data updated October 2, 2026).
- 2510 W Township Line RdHavertown, PA 19083 (484) 450‑4500
Group practices
Medicare enrollment lists Maria C. Harkness as a member of this group (CMS data updated October 2, 2026).
- Penn Medicine-Pma56 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Havertown
Clinicians with the same Medicare primary specialty in Havertown, PA — not a recommendation.
Other clinicians in Penn Medicine-Pma
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1902277767 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians