CHELNITSKY MEDICAL PC
NPI 1750999611
Internal Medicine in Brooklyn, NY

Q: What is Chelnitsky Medical PC's NPI number?

The NPI number for Chelnitsky Medical PC is 1750999611. It was assigned to this organization in the NPPES registry on July 16, 2020.

Q: What is Chelnitsky Medical PC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since July 16, 2020CLIA 33D2191193 · Waiver

133A W END AVE STE 1, BROOKLYN, NY 11235(718) 891-1300(718) 891-1301 Get Directions Write a Review

NPPES record last updated: July 16, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Chelnitsky Medical Pc NPPES

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

CHELNITSKY MEDICAL PC (NPI 1750999611) is a healthcare organization registered as an internal medicine in Brooklyn, New York and active in the NPI registry since July 2020. The organization holds a CLIA Waiver certificate valid through August 24, 2028 and lists Ellen Chelnitsky, Owner, as its authorized official.

NPPES Registry Identity

NPI1750999611

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameCHELNITSKY MEDICAL PC

Location Address133A W END AVE STE 1Brooklyn, NY 11235-4808

Mailing Address133a W End Ave Ste 1Brooklyn, NY 11235-4808 · (718) 891-1300 · Fax (718) 891-1301

Phone(718) 891-1300

Fax(718) 891-1301

Organization SubpartNo

Authorized OfficialEllen ChelnitskyOwner · (718) 891-1300

Enumeration DateJuly 16, 2020

NPPES CertifiedJuly 16, 2020

✔ NPI 1750999611 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

133A W END AVE STE 1, Brooklyn, NY 11235

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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)

Chelnitsky Medical Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Chelnitsky Medical PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ellen Chelnitsky, D.O.

Internal Medicine

NPI 1164785390

133A W END AVE STE 1
Brooklyn, NY 11235

(718) 891-1300

✔ PECOS✔ Accepts MedicareSame address

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 33D2191193

Chelnitsky Medical PC · Brooklyn, NY

Active · expires Aug 24, 2028

CLIA Number33D2191193

Laboratory TypePhysician Office

Certificate Effective DateAugust 25, 2026

Certificate Expiration DateAugust 24, 2028

Laboratory DirectorDr. Ellen Chelnitsky

Laboratory Phone(718) 891-1300

Laboratory LocationChelnitsky Medical PC133A West End Ave Suite 1, Brooklyn, NY 11235

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 Chelnitsky Medical PC's NPI number?

The NPI number for Chelnitsky Medical PC is 1750999611. It was assigned to this organization in the NPPES registry on July 16, 2020.

Where is Chelnitsky Medical PC located?

Chelnitsky Medical PC is located at 133A W End Ave Ste 1, Brooklyn, NY 11235. The listed phone number is (718) 891-1300.

What is Chelnitsky Medical PC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Chelnitsky Medical PC enrolled in Medicare?

Yes. Chelnitsky Medical PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Chelnitsky Medical PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Chelnitsky Medical PC. 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 Chelnitsky Medical PC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D2191193) is associated with this NPI, valid through August 24, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Chelnitsky Medical PC was last updated on July 16, 2020. 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.