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GREENWICH PATHOLOGY ASSOCIATES, LLC
NPI 1699968974
Pathology - Anatomic Pathology & Clinical Pathology in Greenwich, CT

Active since August 21, 2007
5 PERRYRIDGE RD, PATHOLOGY DEPT, GREENWICH, CT 06830(203) 863-3065(203) 863-3846 Get Directions Write a Review

NPPES record last updated: February 17, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Greenwich Pathology Associates, Llc NPPES

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

GREENWICH PATHOLOGY ASSOCIATES, LLC (NPI 1699968974) is a healthcare organization registered as an anatomic pathology & clinical pathology in Greenwich, Connecticut and active in the NPI registry since August 2007. The organization lists Vicki L Altmeyer, President, Gpa, Llc, as its authorized official.

NPPES Registry Identity

NPI1699968974
Entity TypeOrganization
Primary Taxonomy207ZP0102X
Legal Business NameGREENWICH PATHOLOGY ASSOCIATES, LLC
Location Address5 PERRYRIDGE RD, PATHOLOGY DEPTGreenwich, CT 06830-4608
Mailing Address5 Perryridge Rd, Pathology DeptGreenwich, CT 06830-4608 · (203) 863-3065 · Fax (203) 863-3846
Phone(203) 863-3065
Fax(203) 863-3846
Organization SubpartNo
Authorized OfficialVicki L AltmeyerPresident, Gpa, Llc · (203) 863-3065
Enumeration DateAugust 21, 2007
Last NPPES UpdateFebruary 17, 2022
NPPES CertifiedFebruary 17, 2022
✔ NPI 1699968974 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
Also ListedPathology · Medical MicrobiologyTaxonomy 207ZM0300X
5 PERRYRIDGE RD, Greenwich, CT 06830
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Other Identifiers 1

Other07D0101367CT · Clia

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Greenwich Pathology Associates, Llc 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 Greenwich Pathology Associates, LLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 3 within 10 miles. They are listed nearest first.

Clinicians, nearest first (8)

Kisha Mitchell - Richards, M.D.
Pathology
NPI 1053526053
5 PERRYRIDGE RD # G121
Greenwich, CT 06830
(203) 863-3088
✔ PECOS✔ Accepts MedicareSame address
Fanni Ratzon, MD
Pathology
NPI 1316332752
5 PERRYRIDGE RD
Greenwich, CT 06830
(203) 785-7037
✔ PECOS✔ Accepts MedicareSame address
Michael Miller, MD
Pathology
NPI 1730168394
75 HOLLY HILL LN STE 301
Greenwich, CT 06830
(203) 365-0770
✔ PECOS✔ Accepts Medicare1.4 mi
Gary Letts, M.D.
Pathology
NPI 1124235437
148 EAST AVE STE 2D
Norwalk, CT 06851
(203) 832-3737
✔ PECOS✔ Accepts Medicare13 mi
Berrin Ustun, MD
Pathology
NPI 1568789394
111 E 210TH ST
Bronx, NY 10467
(718) 920-4976
✔ PECOS17 mi
Fabiola Souza, M.D.
Pathology
NPI 1558793422
5645 MAIN ST
Flushing, NY 11355
(718) 670-1341
✔ PECOS✔ Accepts Medicare22 mi
Todd Anderson, M.D.
Pathology
NPI 1346487345
100 E 77TH ST DEPT. OF PATHOLOGY
New York, NY 10075
(857) 366-0256
✔ PECOS✔ Accepts Medicare25 mi
Samantha Davenport, M.D.
Pathology
NPI 1932165495
1 ATWELL RD
Cooperstown, NY 13326
(607) 547-6933
✔ PECOS✔ Accepts Medicare133 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 Greenwich Pathology Associates, LLC's NPI number?

The NPI number for Greenwich Pathology Associates, LLC is 1699968974. It was assigned to this organization in the NPPES registry on August 21, 2007.

Where is Greenwich Pathology Associates, LLC located?

Greenwich Pathology Associates, LLC is located at 5 Perryridge Rd Pathology Dept, Greenwich, CT 06830. The listed phone number is (203) 863-3065.

What is Greenwich Pathology Associates, LLC's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Greenwich Pathology Associates, LLC enrolled in Medicare?

Yes. Greenwich Pathology Associates, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Greenwich Pathology Associates, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians, all in Pathology, reassign their Medicare billing to Greenwich Pathology Associates, LLC. 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, 2 practice at this address and 3 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 Greenwich Pathology Associates, LLC was last updated on February 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.