Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. William Gregorie, MD

Individual provider Emergency Medicine Physician · NPI 1104025832

Dr. William Gregorie, MD practises Emergency Medicine in Lewiston, Maine. Graduated from University of South Carolina School of Medicine in 2007, 19 years ago. Practices with Tennessee River Physicians, PLLC, a 65-clinician group and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
19
Trained at
University of South Carolina School of Medicine
Licensed in
ME
In the registry since
2007
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

300 Main St
Lewiston, ME 04240-7027 Not confirmed with CMS for 14 years — call before visiting
Phone: (207) 795-0111
Fax: (207) 795-7193
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 018403 (ME)

Record details

NPI number1104025832
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 12, 2007
Last updated in NPPESJanuary 16, 2012

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF SOUTH CAROLINA SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice Tennessee River Physicians, Pllc — 65 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 patients301
Services billed 347 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Colleagues at Tennessee River Physicians, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 65 clinicians in the practice; 12 are shown here.

Other providers in Lewiston