Quick answers
- Does Marie Hartley accept Medicare assignment?
- Yes. Medicare's clinician data says Marie Hartley 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 Marie Hartley see?
- In 2024, CMS data shows 522 Original Medicare patients and 877 services for Marie Hartley. This counts Original Medicare only and measures volume, not quality.
- What is Marie Hartley's NPI number?
- 1386731115. 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 Marie Hartley, 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 | 522 |
|---|---|
| Services billed to Medicare | 877 |
| Different services or procedures | 46 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)258 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)199 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)104 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)90 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)40 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 cholesterol75%
- High blood pressure70%
- Arthritis43%
- Anxiety25%
- Chronic kidney disease23%
- Depression22%
Hospitals where Marie Hartley works
Medicare's Facility Affiliation Data lists Marie Hartley 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.
- Cape Cod HospitalHyannis, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220012
Practice locations
Addresses where Marie Hartley is enrolled with Medicare (CMS data updated October 2, 2026).
- 27 Park StHyannis, MA 02601 (508) 771‑1800
- 495 Station AveS Yarmouth, MA 02664 (774) 552‑3208
- 5 Industrial DrMashpee, MA 02649 (774) 552‑3210
- 525 Long Pond DrHarwich, MA 02645 (508) 430‑3330
Group practices
Medicare enrollment lists Marie Hartley as a member of this group (CMS data updated October 2, 2026).
- Medical Affiliates of Cape Cod Inc229 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Hyannis
Clinicians with the same Medicare primary specialty in Hyannis, MA — not a recommendation.
Other clinicians in Medical Affiliates of Cape Cod Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| School | State University Of New York At Stony Brook, School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1386731115 |
| 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