BARNABAS HEALTH MULTISPECIALTY
NPI 1538597745
Internal Medicine - Gastroenterology in West Orange, NJ

Active since October 25, 2013CLIA 31D0105780 · Accreditation
101 OLD SHORT HILLS RD, SUITE 217, WEST ORANGE, NJ 07052(973) 731-4600(973) 731-1477 Get Directions Write a Review

NPPES record last updated: October 25, 2013. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Barnabas Health Multispecialty NPPES

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

BARNABAS HEALTH MULTISPECIALTY (NPI 1538597745) is a healthcare organization registered as a gastroenterology in West Orange, New Jersey and active in the NPI registry since October 2013. The organization holds an CLIA Accreditation certificate valid through March 17, 2027 and lists Anthony D Slonim, Owner, as its authorized official.

NPPES Registry Identity

NPI1538597745
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameBARNABAS HEALTH MULTISPECIALTY
Location Address101 OLD SHORT HILLS RD, SUITE 217West Orange, NJ 07052-1000
Mailing Address101 Old Short Hills Rd, Suite 217West Orange, NJ 07052-1000 · (973) 731-4600 · Fax (973) 731-1477
Fax(973) 731-1477
Organization SubpartNo
Authorized OfficialAnthony D SlonimOwner · (973) 322-4021
Enumeration DateOctober 25, 2013
✔ NPI 1538597745 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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.
Also ListedAnesthesiologyTaxonomy 207L00000X
101 OLD SHORT HILLS RD, West Orange, NJ 07052

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Barnabas Health Multispecialty is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

32

Medicare enrollment records show 32 clinicians reassign Medicare billing to Barnabas Health Multispecialty, which bills Medicare for the services they deliver. Of these, 11 practice at this address and 17 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 5

Gastroenterology14
Anesthesiology11
Pathology4
Nurse Practitioner2
Internal Medicine1

Nearest to this location (20)

See all 32
Gastroenterology
NPI 1871780528
101 OLD SHORT HILLS RD SUITE 217
West Orange, NJ 07052
(973) 731-4600
✔ PECOS✔ Accepts MedicareSame address
Gastroenterology
NPI 1689774713
101 OLD SHORT HILLS RD SUITE 217
West Orange, NJ 07052
(973) 731-4600
✔ PECOS✔ Accepts MedicareSame address
Gastroenterology
NPI 1972765675
101 OLD SHORT HILLS RD STE 217
West Orange, NJ 07052
(973) 731-4600
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1457735227
101 OLD SHORT HILLS RD STE 409
West Orange, NJ 07052
(973) 322-6732
✔ PECOS✔ Accepts MedicareSame address
Gastroenterology
NPI 1871023192
101 OLD SHORT HILLS RD STE 217
West Orange, NJ 07052
(973) 731-4600
✔ PECOS✔ Accepts MedicareSame address
Gastroenterology
NPI 1912430653
101 OLD SHORT HILLS RD STE 217
West Orange, NJ 07052
(973) 731-4600
✔ PECOS✔ Accepts MedicareSame address
Gastroenterology
NPI 1881005395
101 OLD SHORT HILLS RD STE 217
West Orange, NJ 07052
(973) 731-4600
✔ PECOS✔ Accepts MedicareSame address
Gastroenterology
NPI 1982081428
101 OLD SHORT HILLS RD STE 217
West Orange, NJ 07052
(973) 731-4600
✔ PECOS✔ Accepts MedicareSame address
Gastroenterology
NPI 1447571096
101 OLD SHORT HILLS RD STE 217
West Orange, NJ 07052
(603) 650-5217
✔ PECOS✔ Accepts MedicareSame address
Gastroenterology
NPI 1942359021
101 OLD SHORT HILLS RD SUITE 217
West Orange, NJ 07052
(973) 731-4600
✔ PECOS✔ Accepts MedicareSame address
Gastroenterology
NPI 1679032551
101 OLD SHORT HILLS RD STE 217
West Orange, NJ 07052
(973) 731-4600
✔ PECOS✔ Accepts MedicareSame address
Anesthesiology
NPI 1548351257
1515 BROAD ST STE B120
Bloomfield, NJ 07003
(973) 873-7000
✔ PECOS✔ Accepts Medicare8.3 mi
Gastroenterology
NPI 1891895959
101 MADISON AVE
Morristown, NJ 07960
(973) 455-0404
✔ PECOS✔ Accepts Medicare8.7 mi
Gastroenterology
NPI 1962593947
101 MADISON AVE
Morristown, NJ 07960
(973) 455-0404
✔ PECOS✔ Accepts Medicare8.7 mi
Gastroenterology
NPI 1659471720
101 MADISON AVE
Morristown, NJ 07960
(973) 455-0404
✔ PECOS✔ Accepts Medicare8.7 mi
Gastroenterology
NPI 1801327432
101 MADISON AVE STE 100
Morristown, NJ 07960
(973) 455-0404
✔ PECOS✔ Accepts Medicare8.7 mi
Internal Medicine
NPI 1073909925
101 MADISON AVE STE 100
Morristown, NJ 07960
(973) 455-0404
✔ PECOS✔ Accepts Medicare8.7 mi
Pathology
NPI 1396793972
865 STONE ST
Rahway, NJ 07065
(732) 499-6139
✔ PECOS✔ Accepts Medicare10 mi
Anesthesiology
NPI 1528061751
525 UNION BLVD
Totowa, NJ 07512
(973) 928-5360
✔ PECOS✔ Accepts Medicare11 mi
Nurse Practitioner
NPI 1013551175
5 FOXWOOD DR APT E
Morris Plains, NJ 07950
(973) 534-7832
✔ PECOS11 mi
See all 32 clinicians

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 Accreditation 31D0105780

Barnabas Health · West Orange, NJ
Active · expires Mar 17, 2027
CLIA Number31D0105780
Laboratory TypePhysician Office
Certificate Effective DateMarch 18, 2025
Certificate Expiration DateMarch 17, 2027
Laboratory DirectorScott Merlin
Laboratory Phone(973) 731-4600
Laboratory LocationBarnabas Health101 Old Short Hills Rd Suite 217, West Orange, NJ 07052
CLIA data matches this NPI record on: Address Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

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 Barnabas Health Multispecialty's NPI number?

The NPI number for Barnabas Health Multispecialty is 1538597745. It was assigned to this organization in the NPPES registry on October 25, 2013.

Where is Barnabas Health Multispecialty located?

Barnabas Health Multispecialty is located at 101 Old Short Hills Rd Suite 217, West Orange, NJ 07052. The listed phone number is (973) 731-4600.

What is Barnabas Health Multispecialty's specialty?

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

Is Barnabas Health Multispecialty enrolled in Medicare?

Yes. Barnabas Health Multispecialty is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Barnabas Health Multispecialty?

According to the CMS Revalidation Reassignment List (October 2026 release), 32 clinicians in 5 Medicare specialties reassign their Medicare billing to Barnabas Health Multispecialty. 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. The largest specialties are Gastroenterology (14), Anesthesiology (11) and Pathology (4). Of these, 11 practice at this address and 17 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Barnabas Health Multispecialty hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 31D0105780) is associated with this NPI, valid through March 17, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Barnabas Health Multispecialty accept?

Health plans from Oscar Health list Barnabas Health Multispecialty 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 Barnabas Health Multispecialty was last updated on October 25, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.