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WILLIAM GREGORY FEERO MD, PHD
NPI 1285600239
Family Medicine in Westbrook, ME

Active since February 28, 2006PECOS EnrolledAccepts Medicare Assignment
79.27/100
CMS Quality Rating
1 HARNOIS AVE STE 1B, WESTBROOK, ME 04092(207) 662-1340(207) 662-1341 Get Directions Write a Review

NPPES record last updated: May 7, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 7, 2026, Apr 18, 2019 (2 updates tracked since 2019).

About William Gregory Feero Md, Phd NPPES

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

WILLIAM GREGORY FEERO MD, PHD (NPI 1285600239) is an individual family medicine provider in Westbrook, Maine, licensed in Maine (MD15570) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Maine General Medical Center, and maintains a secondary practice location in Fairfield.

NPPES Registry Identity

NPI1285600239
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameWILLIAM GREGORY FEEROCredential: MD, PHD
Location Address1 HARNOIS AVE STE 1BWestbrook, ME 04092-4395
Mailing Address1 Harnois Ave Ste 1bWestbrook, ME 04092-4395 · (207) 662-1340 · Fax (207) 662-1341
Phone(207) 662-1340
Fax(207) 662-1341
Sole ProprietorNo
Medical School CMSUniversity Of Pittsburgh School Of MedicineGraduated 1998
Enumeration DateFebruary 28, 2006
Last NPPES UpdateMay 7, 20262 updates tracked since enumeration
NPPES CertifiedMay 7, 2026
✔ NPI 1285600239 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in ME · MD15570
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1 HARNOIS AVE STE 1B, Westbrook, ME 04092
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Secondary Practice Location 1

Location 14 Sheridan RdFairfield, ME 04937-3314 · Phone (207) 861-5000 · Fax (207) 861-5001

Other Identifiers 1

Medicaid313560099ME

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

William Gregory Feero Md, Phd 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 ID4981646908
PECOS Enrollment IDI20050531000562
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 2

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 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.
165 services72 patients
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.
15 services14 patients

Hospital Affiliations CMS Care Compare

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

Maine General Medical Center

Acute Care Hospitals · Augusta, ME
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number200039
Location35 Medical Center ParkwayAugusta, ME 04330 · Kennebec County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04092 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$86.72 typical visit price
range $56.28 – $169.96
Typical copayment $21.68 (range $14.07 – $42.49)
Most-billed visit code 99203
Established Patient
$99.18 typical visit price
range $18.22 – $138.92
Typical copayment $24.79 (range $4.55 – $34.73)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.27/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality73.72
Promoting Interoperability76
Improvement Activities40
Cost60.51

Referred Medical Equipment & Supplies CMS DME claims 8

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
8 suppliers23 claims69 services$5.88 avg. paid by Medicare
Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
4 suppliers12 claims12 services$39.11 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
2 suppliers12 claims12 services$86.19 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
3 suppliers13 claims38 services$32.41 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
3 suppliers11 claims11 services$21.24 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
4 suppliers16 claims82 services$2.55 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

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

PATRICK MICHAEL FLEMING MD
Internal Medicine
1 HARNOIS AVE STE 1B
WESTBROOK, ME 04092
Cumberland County (207) 662-1340
MRS. HELEN CLAIRE HACKETT FNP-C
Nurse Practitioner (Family)
1 HARNOIS AVE STE 1B
WESTBROOK, ME 04092
Cumberland County (207) 662-1340
TRAVIS ROBERT HALLETT MD
Internal Medicine
1 HARNOIS AVE STE 1B
WESTBROOK, ME 04092
Cumberland County (207) 662-1340

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 Feero's NPI number?

The NPI number for William Feero is 1285600239. It was assigned to this individual provider in the NPPES registry on February 28, 2006.

Where is William Feero located?

William Feero practices at 1 Harnois Ave Ste 1B, Westbrook, ME 04092. The listed phone number is (207) 662-1340.

What is William Feero's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is William Feero enrolled in Medicare?

Yes. William Feero 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.

Is William Feero affiliated with any hospitals?

According to CMS data, William Feero is affiliated with Maine General Medical Center.

When was this NPI record last updated?

The NPPES record for William Feero was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.