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OLD GREENWICH MEDICAL GROUP LLC
NPI 1730932880
Internal Medicine in Old Greenwich, CT

Active since April 09, 2024CLIA 07D2037604 · Waiver
8 W END AVE, OLD GREENWICH, CT 06870(203) 637-5400(203) 637-5408 Get Directions Write a Review

NPPES record last updated: May 7, 2024. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 7, 2024, Apr 9, 2024 (2 updates tracked since 2024).

About Old Greenwich Medical Group Llc NPPES

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

OLD GREENWICH MEDICAL GROUP LLC (NPI 1730932880) is a healthcare organization registered as an internal medicine in Old Greenwich, Connecticut and active in the NPI registry since April 2024. The organization holds a CLIA Waiver certificate valid through March 1, 2028 and lists Karyna Estrella, Pracice Manager, as its authorized official.

NPPES Registry Identity

NPI1730932880
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameOLD GREENWICH MEDICAL GROUP LLC
Location Address8 W END AVEOld Greenwich, CT 06870-1642
Mailing Address8 W End AveOld Greenwich, CT 06870-1642 · (203) 637-5400 · Fax (203) 637-5408
Phone(203) 637-5400
Fax(203) 637-5408
Organization SubpartNo
Authorized OfficialKaryna EstrellaPracice Manager · (203) 637-5400
Enumeration DateApril 9, 2024
Last NPPES UpdateMay 7, 20242 updates tracked since enumeration
NPPES CertifiedMay 7, 2024
✔ NPI 1730932880 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.
8 W END AVE, Old Greenwich, CT 06870
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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

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 07D2037604

Old Greenwich Medical Group · Old Greenwich, CT
Active · expires Mar 1, 2028
CLIA Number07D2037604
Laboratory TypePhysician Office
Certificate Effective DateMarch 2, 2026
Certificate Expiration DateMarch 1, 2028
Laboratory DirectorJayne Pincus
Laboratory Phone(203) 637-5406
Laboratory LocationOld Greenwich Medical Group8 West End Avenue, Old Greenwich, CT 06870
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 19

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. COURTNEY LIEBOWITZ PA-C
Physician Assistant
8 W END AVE
OLD GREENWICH, CT 06870
Western Connecticut Planning Region (203) 637-3212
THERESE ANN BERNSTEIN APRN
Nurse Practitioner (Pediatrics)
8 W END AVE
OLD GREENWICH, CT 06870
Western Connecticut Planning Region (203) 637-3212
DR. MELANIE SHARON KELTON M.D.
Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Western Connecticut Planning Region (203) 637-5400
JENNIFER SARAH MILLMAN MD
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Western Connecticut Planning Region (203) 637-3212
DR. BURTON RICHARD RUBIN M.D.
Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Western Connecticut Planning Region (203) 637-5406
DR. REBECCA LIPTON WARKOL MD
Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Western Connecticut Planning Region (203) 637-5406
AMY KAPPELMAN M.D.
Pediatrics
8 W END AVE, GREENWICH PEDIATRIC ASSOCIATES
OLD GREENWICH, CT 06870
Western Connecticut Planning Region (203) 637-3212
FREDERICK E. SIEFERT, MD, PC
Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Western Connecticut Planning Region (203) 637-5406

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 Old Greenwich Medical Group LLC's NPI number?

The NPI number for Old Greenwich Medical Group LLC is 1730932880. It was assigned to this organization in the NPPES registry on April 9, 2024.

Where is Old Greenwich Medical Group LLC located?

Old Greenwich Medical Group LLC is located at 8 W End Ave, Old Greenwich, CT 06870. The listed phone number is (203) 637-5400.

What is Old Greenwich Medical Group LLC's specialty?

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

Does Old Greenwich Medical Group LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 07D2037604) is associated with this NPI, valid through March 1, 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 Old Greenwich Medical Group LLC was last updated on May 7, 2024. NPI Profile syncs with the weekly NPPES data releases published by CMS.