BARIATRIC GROUP
NPI 1366816894
Internal Medicine - Obesity Medicine in Port Jefferson, NY

Active since November 20, 2015
75 N COUNTRY RD, SUITE 201, PORT JEFFERSON, NY 11777(631) 689-0220(631) 417-3042 Get Directions Write a Review

NPPES record last updated: April 8, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Bariatric Group NPPES

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

BARIATRIC GROUP (NPI 1366816894) is a healthcare organization registered as an obesity medicine in Port Jefferson, New York and active in the NPI registry since November 2015. The organization lists Joseph Wisnoski, Vp Finance, as its authorized official.

NPPES Registry Identity

NPI1366816894
Entity TypeOrganization
Primary Taxonomy207RB0002X
Legal Business NameJOHN T MATHER MEMORIAL HOSPITAL
Location Address75 N COUNTRY RD, SUITE 201Port Jefferson, NY 11777-2119
Mailing Address100 Highlands Blvd, Box 9Port Jefferson, NY 11777-2320 · (631) 686-7809 · Fax (631) 686-7972
Fax(631) 417-3042
Organization SubpartNo
Authorized OfficialJoseph WisnoskiVp Finance · (631) 473-1320
Enumeration DateNovember 20, 2015
Last NPPES UpdateApril 8, 2016
✔ NPI 1366816894 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Obesity MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RB0002X
Definition
An internal medicine physician who specializes in the treatment of obesity demonstrates competency in and a thorough understanding of the treatment of obesity and the genetic, biologic, environmental, social, and behavioral factors that contribute to obesity. The obesity medicine physician employs therapeutic interventions including diet, physical activity, behavioral change, and pharmacotherapy. The obesity medicine physician utilizes a comprehensive approach, and may include additional resources such as dietitians, exercise physiologists, mental health professionals and bariatric surgeons as indicated to achieve optimal results. Additionally, the obesity medicine physician maintains competency in providing pre- peri- and post-surgical care of bariatric surgery patients, promotes the prevention of obesity, and advocates for those who suffer from obesity.
75 N COUNTRY RD, Port Jefferson, NY 11777

Other Names 1

Other NameBariatric Group

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Bariatric Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

8

Medicare enrollment records show 8 clinicians reassign Medicare billing to Bariatric Group, which bills Medicare for the services they deliver. Of these, 6 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (8)

Nurse Practitioner
NPI 1821495086
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 476-2734
✔ PECOS✔ Accepts Medicare0.1 mi
Nurse Practitioner
NPI 1912910910
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 476-2847
✔ PECOS0.1 mi
Nurse Practitioner
NPI 1932497195
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 473-1320
✔ PECOS0.1 mi
Nurse Practitioner
NPI 1972254290
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 275-3589
✔ PECOS0.1 mi
Nurse Practitioner
NPI 1023679503
75 N COUNTRY RD
Port Jefferson, NY 11777
(631) 686-2565
✔ PECOS✔ Accepts Medicare0.1 mi
Nurse Practitioner
NPI 1194107961
5316 NESCONSET HWY
Port Jefferson Station, NY 11776
(631) 474-0707
✔ PECOS✔ Accepts Medicare1.0 mi
Nurse Practitioner
NPI 1427571595
2714 172ND ST
Flushing, NY 11358
(646) 238-1302
✔ PECOS✔ Accepts Medicare40 mi
Nurse Practitioner
NPI 1063787760
7901 BROADWAY
Elmhurst, NY 11373
(718) 334-2460
✔ PECOS✔ Accepts Medicare46 mi

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

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 John T Mather Memorial Hospital's NPI number?

The NPI number for John T Mather Memorial Hospital is 1366816894. It was assigned to this organization in the NPPES registry on November 20, 2015. The provider is also known as Bariatric Group.

Where is John T Mather Memorial Hospital located?

John T Mather Memorial Hospital is located at 75 N Country Rd Suite 201, Port Jefferson, NY 11777. The listed phone number is (631) 689-0220.

What is John T Mather Memorial Hospital's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Obesity Medicine, with taxonomy code 207RB0002X.

Is John T Mather Memorial Hospital enrolled in Medicare?

Yes. John T Mather Memorial Hospital is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through John T Mather Memorial Hospital?

According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians, all in Nurse Practitioner, reassign their Medicare billing to John T Mather Memorial Hospital. 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. Of these, 6 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for John T Mather Memorial Hospital was last updated on April 8, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.