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

William Gregory Feero, MD, PHD

Individual provider Family Medicine Physician · NPI 1285600239

William Gregory Feero, MD, PHD is a Family Practice in Westbrook, Maine. Graduated from University of Pittsburgh School of Medicine in 1998, 28 years ago. Practices with Mainegeneral Medical Center, a 556-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
28
Trained at
University of Pittsburgh School of Medicine
Licensed in
ME
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

1 Harnois Ave Ste 1B
Westbrook, ME 04092-4395
Phone: (207) 662-1340
Fax: (207) 662-1341
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4 Sheridan Rd, Fairfield, ME 04937-3314 — (207) 861-5000

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MD15570 (ME)

Record details

NPI number1285600239
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedFebruary 28, 2006
Last updated in NPPESMay 7, 2026
Certification dateMay 7, 2026
Mailing address1 Harnois Ave Ste 1b, Westbrook, ME 04092-4395

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice Mainegeneral Medical Center — 556 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Westbrook