Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Margaret Mary Hallahan, DO

Individual provider Internal Medicine Physician · NPI 1972818540

Margaret Mary Hallahan, DO is an Internal Medicine in Huntingdon, Pennsylvania. Graduated from Lake Erie College of Osteopathic Medicine, Erie in 2010, 16 years ago. Practices with J C Blair Memorial Hospital, a 98-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
16
Trained at
Lake Erie College of Osteopathic Medicine, Erie
Licensed in
PA
In the registry since
2010
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1225 Warm Springs Ave
Huntingdon, PA 16652-2350
Phone: (814) 643-2290
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospice and Palliative Medicine (Internal Medicine) Physician (primary) Taxonomy 207RH0002X · Licence OS016316 (PA)
Internal Medicine Physician Taxonomy 207R00000X · Licence OS016316 (PA)

Record details

NPI number1972818540
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedAugust 8, 2010
Last updated in NPPESMay 7, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPICE/PALLIATIVE CARE, HOSPITALIST
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Graduated 2010 (16 years in practice)
Group practice J C Blair Memorial Hospital — 98 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Huntingdon