STEWARD PET IMAGING, LLC AT HOLYOKE MEDICAL CENTER
NPI 1356599542
Clinic/Center - Radiology, Mobile in Holyoke, MA

Q: What is Steward Pet Imaging, L.L.C.'s NPI number?

The NPI number for Steward Pet Imaging, L.L.C. is 1356599542. It was assigned to this organization in the NPPES registry on September 3, 2008. The provider is doing business as Steward Pet Imaging, LLC At Holyoke Medical Center.

Q: What is Steward Pet Imaging, L.L.C.'s specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Radiology, Mobile, with taxonomy code 261QR0208X.

Active since September 03, 2008

575 BEECH ST, HOLYOKE, MA 01040(877) 877-8455(866) 927-0079 Get Directions Write a Review

NPPES record last updated: January 13, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Steward Pet Imaging, Llc At Holyoke Medical Center NPPES

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

STEWARD PET IMAGING, LLC AT HOLYOKE MEDICAL CENTER (NPI 1356599542) is a healthcare organization registered as a radiology, mobile in Holyoke, Massachusetts and active in the NPI registry since September 2008. The organization lists Robert E Guyon, Coo, as its authorized official.

NPPES Registry Identity

NPI1356599542

Entity TypeOrganization

Primary Taxonomy261QR0208X

Legal Business NameSTEWARD PET IMAGING, L.L.C.

Location Address575 BEECH STHolyoke, MA 01040-2223

Mailing Address800 Washington StNorwood, MA 02062-3487 · (877) 877-8455 · Fax (866) 927-0079

Phone(877) 877-8455

Fax(866) 927-0079

Organization SubpartYes

Authorized OfficialRobert E GuyonCoo · (617) 789-5047

Enumeration DateSeptember 3, 2008

Last NPPES UpdateJanuary 13, 2011

✔ NPI 1356599542 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Radiology, MobileAmbulatory Health Care Facilities

Taxonomy Code261QR0208X

License✔ Licensed in MA · 4NNJ

575 BEECH ST, Holyoke, MA 01040

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Other Names 1

Doing Business AsSteward Pet Imaging, Llc At Holyoke Medical Center

Other Identifiers 2

Medicaid110073236HMA

Medicare PINPTAN 000839307MA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and revalidation status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Steward Pet Imaging, Llc At Holyoke Medical Center is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by November 30, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date

StateMassachusettsEnrollment IDO20041206000621Non-DME Part B · Independent Diagnostic Testing Facility (IDTF)Due dateNovember 30, 2026

Source: CMS Revalidation Due Date List, October 2026 release.

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.

Nuclear medicine study from skull base to mid-thigh with ct scan 78815

A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.

32 services29 patients

Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries A9552

Fluorodeoxyglucose F-18 FDG is a radioactive drug used in PET scans. It helps doctors see how your tissues and organs are functioning. The drug is given in a specific dose, up to 45 millicuries, depending on your body size and the type of scan.

29 services26 patients

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.

MARISSA CHIAPPERINO MPH,RD,CSO,CDE,CNSC

Dietitian, Registered

575 BEECH ST
HOLYOKE, MA 01040

Hampden County (845) 279-1135

ASHLEY M LANDRY PA-C

Physician Assistant

575 BEECH ST
HOLYOKE, MA 01040

Hampden County (413) 534-2500

ROENGSAK TULATHIMUTTE MD

Anesthesiology

575 BEECH ST, ANESTHESIA DEPT
HOLYOKE, MA 01040

Hampden County (413) 534-2845

DR. MARIAN ISAAK MD

Internal Medicine

575 BEECH ST
HOLYOKE, MA 01040

Hampden County (413) 534-2500

VAMSEEDHAR ALLA M.D.

Internal Medicine

575 BEECH ST
HOLYOKE, MA 01040

Hampden County (413) 534-2500

HOLYOKE MEDICAL CENTER, INC.

Psychiatric Unit

575 BEECH ST
HOLYOKE, MA 01040

Hampden County (413) 534-2805

HOLYOKE MEDICAL CENTER, INC.

Hospitalist

575 BEECH ST
HOLYOKE, MA 01040

Hampden County (413) 534-2805

ALICE MARY GRAHAM-BROWN M.D.

Psychiatry & Neurology (Psychiatry)

575 BEECH ST
HOLYOKE, MA 01040

Hampden County (413) 534-2697

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 Steward Pet Imaging, L.L.C.'s NPI number?

The NPI number for Steward Pet Imaging, L.L.C. is 1356599542. It was assigned to this organization in the NPPES registry on September 3, 2008. The provider is doing business as Steward Pet Imaging, LLC At Holyoke Medical Center.

Where is Steward Pet Imaging, L.L.C. located?

Steward Pet Imaging, L.L.C. is located at 575 Beech St, Holyoke, MA 01040. The listed phone number is (877) 877-8455.

What is Steward Pet Imaging, L.L.C.'s specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Radiology, Mobile, with taxonomy code 261QR0208X.

Is Steward Pet Imaging, L.L.C. enrolled in Medicare?

Yes. Steward Pet Imaging, L.L.C. is registered in the Medicare PECOS enrollment system.

When is Steward Pet Imaging, L.L.C.'s Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Massachusetts, Independent Diagnostic Testing Facility (IDTF)) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

What insurance does Steward Pet Imaging, L.L.C. accept?

Health plans from Harvard Pilgrim Health Care list Steward Pet Imaging, L.L.C. 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.

When was this NPI record last updated?

The NPPES record for Steward Pet Imaging, L.L.C. was last updated on January 13, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.