WESTFIELD ASSOCIATES IN GASTROENTEROLOGY
NPI 1669484820
Internal Medicine - Gastroenterology in Westfield, NJ

Q: What is Westfield Associates In Internal Medicine & Gastroenterology's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Active since August 13, 2006CLIA 31D0107630 · Waiver

512 E BROAD ST, WESTFIELD, NJ 07090(908) 232-6151(908) 232-1920 Get Directions Write a Review

NPPES record last updated: August 30, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Westfield Associates In Gastroenterology NPPES

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

WESTFIELD ASSOCIATES IN GASTROENTEROLOGY (NPI 1669484820) is a healthcare organization registered as a gastroenterology in Westfield, New Jersey and active in the NPI registry since August 2006. The organization holds a CLIA Waiver certificate valid through March 20, 2027 and lists Thomas J. Amrick, President, as its authorized official.

NPPES Registry Identity

NPI1669484820

Entity TypeOrganization

Primary Taxonomy207RG0100X

Legal Business NameWESTFIELD ASSOCIATES IN INTERNAL MEDICINE & GASTROENTEROLOGY

Location Address512 E BROAD STWestfield, NJ 07090-2116

Mailing Address512 E Broad StWestfield, NJ 07090-2116 · (908) 232-6151 · Fax (908) 232-1920

Phone(908) 232-6151

Fax(908) 232-1920

Organization SubpartNo

Authorized OfficialThomas J. AmrickPresident · (908) 232-6151

Enumeration DateAugust 13, 2006

Last NPPES UpdateAugust 30, 2007

✔ NPI 1669484820 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

512 E BROAD ST, Westfield, NJ 07090

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Other Names 1

Doing Business AsWestfield Associates In Gastroenterology

Other Identifiers 2

Medicaid2622700NJ

Medicare PIN527236NJ

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Westfield Associates In Gastroenterology is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by March 31, 2027

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

StateNew JerseyEnrollment IDO20100513000443Non-DME Part B · Clinic/Group PracticeDue dateMarch 31, 2027

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

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Westfield Associates In Gastroenterology, which bills Medicare for the services this clinician delivers.

Clinician (1)

Thomas Amrick, M.D.

Gastroenterology

NPI 1538182050

512 E BROAD ST
Westfield, NJ 07090

(908) 232-6151

✔ PECOS0.9 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 31D0107630

Westfield Associates · Westfield, NJ

Active · expires Mar 20, 2027

CLIA Number31D0107630

Laboratory TypePractitioner Other

Certificate Effective DateMarch 21, 2025

Certificate Expiration DateMarch 20, 2027

Laboratory DirectorThomas J. Amrick MD

Laboratory Phone(908) 232-6151

Laboratory LocationWestfield Associates512 E Broad, Westfield, NJ 07090

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

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 Westfield Associates In Internal Medicine & Gastroenterology's NPI number?

The NPI number for Westfield Associates In Internal Medicine & Gastroenterology is 1669484820. It was assigned to this organization in the NPPES registry on August 13, 2006. The provider is doing business as Westfield Associates In Gastroenterology.

Where is Westfield Associates In Internal Medicine & Gastroenterology located?

Westfield Associates In Internal Medicine & Gastroenterology is located at 512 E Broad St, Westfield, NJ 07090. The listed phone number is (908) 232-6151.

What is Westfield Associates In Internal Medicine & Gastroenterology's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Westfield Associates In Internal Medicine & Gastroenterology enrolled in Medicare?

Yes. Westfield Associates In Internal Medicine & Gastroenterology is registered in the Medicare PECOS enrollment system.

When is Westfield Associates In Internal Medicine & Gastroenterology'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 (New Jersey, Clinic/Group Practice) is due for revalidation by March 31, 2027. 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.

How many clinicians bill Medicare through Westfield Associates In Internal Medicine & Gastroenterology?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Gastroenterology) reassigns their Medicare billing to Westfield Associates In Internal Medicine & Gastroenterology. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Westfield Associates In Internal Medicine & Gastroenterology hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 31D0107630) is associated with this NPI, valid through March 20, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Westfield Associates In Internal Medicine & Gastroenterology was last updated on August 30, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.