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

Dr. William C Faquin, MDPHD

Individual provider Cytopathology Physician · NPI 1114908043

Dr. William C Faquin, MDPHD practises Pathology in Boston, Massachusetts. Graduated from Harvard Medical School in 1993, 33 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
33
Trained at
Harvard Medical School
Licensed in
MA
In the registry since
2005
Specialties on file
2
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Practice location Address checks out

55 Fruit St Wrn 2 Pathology Associates
Boston, MA 02114-2621
Phone: (617) 573-3957
Fax: (617) 573-3389
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cytopathology Physician (primary) Taxonomy 207ZC0500X · Licence 156029 (MA)
Anatomic Pathology Physician Taxonomy 207ZP0101X · Licence 156029 (MA)

Record details

NPI number1114908043
Entity typeIndividual (Type 1)
GenderMale
Credentials MDPHD
Sole proprietorNo
NPI enumeratedNovember 8, 2005
Last updated in NPPESJuly 13, 2026

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1993 (33 years in practice)
Group practice Massachusetts General Physicians Organization Inc — 3484 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients661
Services billed 2,312 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 Massachusetts General Physicians Organization Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3484 clinicians in the practice; 12 are shown here.

Other providers in Boston