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

Dr. Elizabeth Ann O Neill, MD

Individual provider Internal Medicine Physician · NPI 1346204377

Dr. Elizabeth Ann O Neill, MD practises Internal Medicine in Amherst, New York. Graduated from University of Oklahoma College of Medicine in 1991, 35 years ago. Practices with Northeast Medical, PC, an 8-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
35
Trained at
University of Oklahoma College of Medicine
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

350 Alberta Dr
Amherst, NY 14226-1855 Not confirmed with CMS for 18 years — call before visiting
Phone: (719) 837-4089
Fax: (716) 837-4851
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 193863 (NY)

Record details

NPI number1346204377
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 14, 2006
Last updated in NPPESMay 29, 2008

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Northeast Medical, P.C. — 8 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients104
Services billed 204 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Northeast Medical, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Amherst