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THOMAS BRITTON PERCY MD
NPI 1699709352
Internal Medicine in Westfield, MA

Active since July 10, 2006PECOS EnrolledAccepts Medicare Assignment
115 W SILVER ST, WESTFIELD, MA 01085(413) 572-5099(413) 572-4151 Get Directions Write a Review

NPPES record last updated: April 30, 2008. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Thomas Britton Percy Md NPPES

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

THOMAS BRITTON PERCY MD (NPI 1699709352) is an individual internal medicine provider in Westfield, Massachusetts, licensed in Massachusetts (151347) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Emerson Hospital -, and is a graduate of University Of Cincinnati College Of Medicine (1993).

NPPES Registry Identity

NPI1699709352
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameTHOMAS BRITTON PERCYCredential: MD
Location Address115 W SILVER STWestfield, MA 01085-3628
Mailing AddressPo Box 369Westfield, MA 01086-0369 · (413) 509-1000 · Fax (413) 509-1003
Phone(413) 572-5099
Fax(413) 572-4151
Sole ProprietorNo
Medical School CMSUniversity Of Cincinnati College Of MedicineGraduated 1993
Enumeration DateJuly 10, 2006
Last NPPES UpdateApril 30, 2008
✔ NPI 1699709352 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 151347
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
115 W SILVER ST, Westfield, MA 01085
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Other Identifiers 4

Medicaid3153916MA
Medicare UPING28056
Medicare PINA21340MA
OtherJ16762MA · Blue Cross Blue Shield

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Thomas Britton Percy Md 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 ID2062436959
PECOS Enrollment IDI20060118000713
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.

Medicare Billing Reassignments

4

Medicare enrollment records show Thomas Percy reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Baystate Medical Practices, Inc
8.1 mi
Emergency Medical Services
759 CHESTNUT ST
Springfield, MA 01199
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,537 clinicians in this Medicare group
NPI 1548205909 (413) 794-5700
Mass General Brigham Medical Group Western Massachusetts Inc
16 mi
Family Medicine
30 LOCUST ST
Northampton, MA 01060
  • Reassigned Medicare billing, Massachusetts enrollment
  • 539 clinicians in this Medicare group
NPI 1295787919 (413) 582-2898
Boston Center For Memory, Inc
81 mi
Behavioral Neurology & Neuropsychiatry
180 WELLS AVE., SUITE 304
Newton, MA 02459
  • Reassigned Medicare billing, Massachusetts enrollment
  • 4 clinicians in this Medicare group
NPI 1609142017 (617) 699-6927
Vantage Healthcare LLC
84 mi
Internal Medicine
C/O WORKPLACE@45, 45 DAN RD
Canton, MA 02021
  • Reassigned Medicare billing, Massachusetts enrollment
  • 113 clinicians in this Medicare group
NPI 1366903551 (781) 867-2050

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
78 services53 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
32 services24 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
26 services26 patients
Administration of psychological or neuropsychological test by technician, first 30 minutes 96138
This procedure involves a trained technician administering a psychological or neuropsychological test. It's a process that assesses your mental function and behavior. The initial session will last 30 minutes. The aim is to understand your cognitive abilities better.
25 services25 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
20 services20 patients

Hospital Affiliations CMS Care Compare

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

Emerson Hospital -

Acute Care Hospitals · W Concord, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220084
Location133 Old Road To 9 Acre CornerW Concord, MA 01742 · Middlesex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01085 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
$134.47 typical visit price
range $58.86 – $177.36
Typical copayment $33.61 (range $14.71 – $44.34)
Most-billed visit code 99204
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

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.

DR. MATTHEW GRAY MD
Emergency Medicine
115 W SILVER ST
WESTFIELD, MA 01085
Hampden County (413) 568-2811
LEANNE ELIZABETH SULLIVAN
Occupational Therapist
115 W SILVER ST
WESTFIELD, MA 01085
Hampden County (413) 571-0151
PETER E PASCAL MD LLC
Orthopaedic Surgery
115 W SILVER ST
WESTFIELD, MA 01085
Hampden County (413) 562-3444
JODI MANISCALCO PA
Physician Assistant
115 W SILVER ST
WESTFIELD, MA 01085
Hampden County (413) 568-2811
PIONEER VALLEY IMAGING, P.C.
Radiology (Body Imaging)
115 W SILVER ST, NOBLE HOSPITAL
WESTFIELD, MA 01085
Hampden County (413) 572-5055
RICHARD J LOFRUMENTO M.D.
Anesthesiology
115 W SILVER ST
WESTFIELD, MA 01085
Hampden County (413) 562-3444
BRIAN PAUL SUTTON M.D.
Emergency Medicine
115 W SILVER ST
WESTFIELD, MA 01085
Hampden County (413) 568-2811
JANET G SWIERZEWSKI NP
Nurse Practitioner (Acute Care)
115 W SILVER ST
WESTFIELD, MA 01085
Hampden County (413) 572-5099

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 Thomas Percy's NPI number?

The NPI number for Thomas Percy is 1699709352. It was assigned to this individual provider in the NPPES registry on July 10, 2006.

Where is Thomas Percy located?

Thomas Percy practices at 115 W Silver St, Westfield, MA 01085. The listed phone number is (413) 572-5099.

What is Thomas Percy's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Thomas Percy enrolled in Medicare?

Yes. Thomas Percy 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.

Which organizations bill Medicare for Thomas Percy's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Percy reassigns Medicare benefits to 4 organizations: Baystate Medical Practices, Inc (Springfield, MA), Mass General Brigham Medical Group Western Massachusetts Inc (Northampton, MA), Boston Center For Memory, Inc (Newton, MA) and Vantage Healthcare LLC (Canton, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Percy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Percy accept?

Health plans from Anthem Blue Cross and Blue Shield, Taro Health and WellSense Health Plan list Thomas Percy 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 Thomas Percy affiliated with any hospitals?

According to CMS data, Thomas Percy is affiliated with Emerson Hospital -.

When was this NPI record last updated?

The NPPES record for Thomas Percy was last updated on April 30, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.