Quick answers
- Does Margaret M. Hallahan accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret M. Hallahan 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 Margaret M. Hallahan see?
- In 2024, CMS data shows 167 Original Medicare patients and 804 services for Margaret M. Hallahan. This counts Original Medicare only and measures volume, not quality.
- What is Margaret M. Hallahan's NPI number?
- 1972818540. 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 Margaret M. Hallahan, 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 | 167 |
|---|---|
| Services billed to Medicare | 804 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 82 |
Most frequent services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)219 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes (99307)205 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)133 services
- Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)49 services
- Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)45 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 pressure75%
- High cholesterol64%
- Depression60%
- Alzheimer's disease or dementia53%
- Anxiety49%
- Arthritis44%
Hospitals where Margaret M. Hallahan works
Medicare's Facility Affiliation Data lists Margaret M. Hallahan 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.
- Geisinger Medical CenterDanville, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390006
- Geisinger-Lewistown HospitalLewistown, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390048
- Penn Highlands HuntingdonHuntingdon, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390056
Practice locations
Addresses where Margaret M. Hallahan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1227 Warm Springs, 201 Phhd Palliative CareHuntingdon, PA 16652 (814) 643‑8255
- 526 N Saint Cloud St, Suite 1601Allentown, PA 18104 (337) 991‑9276
- 7 E Locust StOxford, PA 19363 (337) 991‑9276
Group practices
Medicare enrollment lists Margaret M. Hallahan as a member of these groups (CMS data updated October 2, 2026).
- Curana Health of Pennsylvania PC99 clinicians in the group
- J C Blair Memorial Hospital96 clinicians in the group
- CH Specialty Services PA PC80 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospice/Palliative Carealso
- Hospitalistalso
Other internal medicine doctors in Huntingdon
Clinicians with the same Medicare primary specialty in Huntingdon, PA — not a recommendation.
Other clinicians in Curana Health of Pennsylvania PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 2010 (16 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972818540 |
| 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