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DR. WILLIAM ZACHARY FENN D.P.M.
NPI 1184897415
Podiatrist - Foot & Ankle Surgery in Southborough, MA

Active since April 08, 2008PECOS EnrolledAccepts Medicare Assignment
24 NEWTON ST, SOUTHBOROUGH, MA 01772(508) 486-4472(508) 460-3281 Get Directions Write a Review

NPPES record last updated: March 28, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 28, 2025, Oct 14, 2021, Mar 30, 2020 (3 updates tracked since 2020).

About Dr. William Zachary Fenn D.p.m. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM ZACHARY FENN D.P.M. (NPI 1184897415) is an individual foot & ankle surgery provider in Southborough, Massachusetts, licensed in Massachusetts (2336) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Medical Center/university Campus, and is a graduate of Temple University School Of Medicine (2005).

NPPES Registry Identity

NPI1184897415
Entity TypeIndividualMale
Primary Taxonomy213ES0103X
Provider Legal NameDR. WILLIAM ZACHARY FENNCredential: D.P.M.
Location Address24 NEWTON STSouthborough, MA 01772-1215
Mailing Address24 Newton StSouthborough, MA 01772-1215 · (508) 486-4472 · Fax (508) 460-3281
Phone(508) 486-4472
Fax(508) 460-3281
Sole ProprietorYes
Medical School CMSTemple University School Of MedicineGraduated 2005
Enumeration DateApril 8, 2008
Last NPPES UpdateMarch 28, 20253 updates tracked since enumeration
NPPES CertifiedMarch 28, 2025
✔ NPI 1184897415 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPodiatrist · Foot & Ankle SurgeryPodiatric Medicine & Surgery Service Providers
Taxonomy Code213ES0103X
License✔ Licensed in MA · 2336
Also ListedPodiatristTaxonomy 213E00000X · License 0103301006 (VA)
24 NEWTON ST, Southborough, MA 01772
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Other Identifiers 1

Medicaid110153403AMA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Zachary Fenn D.p.m. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4385703214
PECOS Enrollment IDI20081107000145
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
463 services203 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
104 services104 patients
Trimming of dystrophic nails, any number G0127
Trimming of dystrophic nails involves the careful cutting and shaping of thickened or deformed nails. This is often required when nails are affected by conditions such as fungus or psoriasis. The procedure helps to reduce discomfort and improve nail health.
72 services31 patients
Injection, dexamethasone sodium phosphate, 1 mg J1100
Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.
57 services16 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
51 services46 patients
Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
42 services16 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Umass Memorial Medical Center/University Campus

Acute Care Hospitals · Worcester, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220163
Location55 Lake Avenue NorthWorcester, MA 01655 · Worcester County
Emergency services Birthing friendly

Metrowest Medical Center

Acute Care Hospitals · Framingham, MA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220175
Location115 Lincoln StreetFramingham, MA 01701 · Middlesex County
Emergency services Birthing friendly

St Vincent Hospital

Acute Care Hospitals · Worcester, MA
2/5 CMS rating
OwnershipProprietary
CMS Certification Number220176
Location123 Summer StreetWorcester, MA 01608 · Worcester County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

FRANK CHAU M.D.
Internal Medicine
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-3250
HANNA MARGARET BERRY NP
Nurse Practitioner (Family)
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 481-5500
CATHERINE ANNE LANG PHARMD
Pharmacist
24 NEWTON ST, WALGREENS PHARMACY
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-5323
AMEE RATHOD M.D.
Internal Medicine
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 481-5500
JUSTIN NATHANIEL DORFMAN D.O.
Internal Medicine
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-3250
MARIJEAN LAMOUREAUX RD,LDN,CDE
Dietitian, Registered (Nutrition, Pediatric)
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-3100
DR. MAI CHU O.D.
Optometrist
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (084) 603-1505
GRACE C WINSHIP NP
Nurse Practitioner (Family)
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-3250

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Fenn's NPI number?

The NPI number for William Fenn is 1184897415. It was assigned to this individual provider in the NPPES registry on April 8, 2008.

Where is William Fenn located?

William Fenn practices at 24 Newton St, Southborough, MA 01772. The listed phone number is (508) 486-4472.

What is William Fenn's specialty?

The primary specialty registered for this NPI is Podiatrist, specializing in Foot & Ankle Surgery, with taxonomy code 213ES0103X.

Is William Fenn enrolled in Medicare?

Yes. William Fenn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does William Fenn accept?

Health plans from Anthem Blue Cross and Blue Shield list William Fenn as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Fenn affiliated with any hospitals?

According to CMS data, William Fenn is affiliated with Umass Memorial Medical Center/University Campus, Metrowest Medical Center and St Vincent Hospital.

When was this NPI record last updated?

The NPPES record for William Fenn was last updated on March 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.