DR. THOMAS GREGORY WALKER M.D.
NPI 1821088154
Radiology - Vascular & Interventional Radiology in Boston, MA

Q: What is Thomas Walker's NPI number?

The NPI number for Thomas Walker is 1821088154. It was assigned to this individual provider in the NPPES registry on October 27, 2005.

Q: What is Thomas Walker's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Walker was last updated on December 31, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since October 27, 2005PECOS Enrolled

55 FRUIT ST # 290A, MASSACHUSETTS GENERAL HOSPITAL, BOSTON, MA 02114(617) 726-8314(617) 726-8476 Get Directions Write a Review

NPPES record last updated: December 31, 2019. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. Thomas Gregory Walker M.d. NPPES

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

DR. THOMAS GREGORY WALKER M.D. (NPI 1821088154) is an individual vascular & interventional radiology provider in Boston, Massachusetts, licensed in Massachusetts (53265) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821088154

Entity TypeIndividualMale

Primary Taxonomy2085R0204X

Provider Legal NameDR. THOMAS GREGORY WALKERCredential: M.D.

Location Address55 FRUIT ST # 290A, MASSACHUSETTS GENERAL HOSPITALBoston, MA 02114-2621

Mailing Address55 Fruit St Grb 290a, Massachusetts General HospitalBoston, MA 02114-2621 · (617) 726-8314 · Fax (617) 726-8476

Phone(617) 726-8314

Fax(617) 726-8476

Sole ProprietorNo

Enumeration DateOctober 27, 2005

Last NPPES UpdateDecember 31, 2019

✔ NPI 1821088154 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Vascular & Interventional RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0204X

License✔ Licensed in MA · 53265

Definition

A radiologist who diagnoses and treats diseases by various radiologic imaging modalities. These include fluoroscopy, digital radiography, computed tomography, sonography and magnetic resonance imaging.

Also ListedRadiology · Diagnostic RadiologyTaxonomy 2085R0202X · License 53265 (MA)

55 FRUIT ST # 290A, Boston, MA 02114

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Other Identifiers 1

Medicaid6182372MA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Thomas Gregory Walker M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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

$97.64 typical visit price

range $63.72 – $189.86

Typical copayment $24.41 (range $15.93 – $47.46)

Most-billed visit code 99203

Established Patient

$78.84 typical visit price

range $21.07 – $155.29

Typical copayment $19.71 (range $5.26 – $38.82)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Walker's NPI number?

The NPI number for Thomas Walker is 1821088154. It was assigned to this individual provider in the NPPES registry on October 27, 2005.

Where is Thomas Walker located?

Thomas Walker practices at 55 Fruit St # 290A Massachusetts General Hospital, Boston, MA 02114. The listed phone number is (617) 726-8314.

What is Thomas Walker's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.

Is Thomas Walker enrolled in Medicare?

Yes. Thomas Walker is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Thomas Walker was last updated on December 31, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.