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WATERTOWN INTERNISTS PC
NPI 1609844463
Internal Medicine in Watertown, NY

Active since March 09, 2006CLIA 33D0674565 · Accreditation
53-59 PUBLIC SQUARE, SUITE 301, WATERTOWN, NY 13601(315) 782-2141(315) 782-5123 Get Directions Write a Review

NPPES record last updated: August 17, 2018. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Watertown Internists Pc NPPES

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

WATERTOWN INTERNISTS PC (NPI 1609844463) is a healthcare organization registered as an internal medicine in Watertown, New York and active in the NPI registry since March 2006. The organization holds an CLIA Accreditation certificate valid through December 22, 2027 and lists Collins F Kellogg, President, as its authorized official.

NPPES Registry Identity

NPI1609844463
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameWATERTOWN INTERNISTS PC
Location Address53-59 PUBLIC SQUARE, SUITE 301Watertown, NY 13601
Mailing Address53-59 Public Square, Suite 301Watertown, NY 13601 · (315) 782-2141 · Fax (315) 782-5123
Phone(315) 782-2141
Fax(315) 782-5123
Organization SubpartNo
Authorized OfficialCollins F KelloggPresident · (315) 782-2141
Enumeration DateMarch 9, 2006
Last NPPES UpdateAugust 17, 2018
✔ NPI 1609844463 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.
53-59 PUBLIC SQUARE, Watertown, NY 13601
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Other Identifiers 2

OtherCN1323NY · Railroad Medicare
Medicaid01108621NY

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)

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

Clinicians Billing Medicare Through This Organization

10

Medicare enrollment records show 10 clinicians reassign Medicare billing to Watertown Internists PC, which bills Medicare for the services they deliver. Of these, 9 practice at this address. They are listed nearest first.

Clinicians by Medicare Specialty 3

Nurse Practitioner5
Internal Medicine4
Family Practice1

Clinicians, nearest first (10)

Laura Boggs, DO
Internal Medicine
NPI 1013105949
53-59 PUBLIC SQUARE SUITE 301
Watertown, NY 13601
(315) 782-2141
✔ PECOS✔ Accepts MedicareSame address
Maegan Castle
Nurse Practitioner
NPI 1619864535
53-59 PUBLIC SQ STE 301
Watertown, NY 13601
(315) 782-2141
✔ PECOS✔ Accepts MedicareSame address
Christopher Kellogg, DO
Internal Medicine
NPI 1598260119
53-59 PUBLIC SQ STE 301
Watertown, NY 13601
(315) 782-2141
✔ PECOS✔ Accepts MedicareSame address
Collins Kellogg, MD
Internal Medicine
NPI 1225031255
53-59 PUBLIC SQ STE 301
Watertown, NY 13601
(315) 782-2141
✔ PECOS✔ Accepts MedicareSame address
Connor Kellogg, FNP
Nurse Practitioner
NPI 1467166736
53-59 PUBLIC SQ STE 301
Watertown, NY 13601
(315) 782-2141
✔ PECOS✔ Accepts MedicareSame address
Julie Lapointe, MD
Internal Medicine
NPI 1265435234
53-59 PUBLIC SQ STE 301
Watertown, NY 13601
(315) 782-2141
✔ PECOS✔ Accepts MedicareSame address
Ann Lepine, ANP, FNP
Nurse Practitioner
NPI 1447253471
53-59 PUBLIC SQ STE 301
Watertown, NY 13601
(315) 782-2141
✔ PECOS✔ Accepts MedicareSame address
Nancy Spicer, ANP
Nurse Practitioner
NPI 1598768574
53-59 PUBLIC SQ STE 301
Watertown, NY 13601
(315) 782-2141
✔ PECOS✔ Accepts MedicareSame address
Jason White, M.D.
Family Practice
NPI 1992758270
53-59 PUBLIC SQUARE SUITE 301 WATERTOWN INTERNISTS, PC
Watertown, NY 13601
(315) 782-2141
✔ PECOS✔ Accepts MedicareSame address
Carrie Hostetler, FNP
Nurse Practitioner
NPI 1528588639
7785 N STATE ST
Lowville, NY 13367
(315) 376-5200
✔ PECOS✔ Accepts Medicare24 mi

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 33D0674565

Watertown Internists · Watertown, NY
Active · expires Dec 22, 2027
CLIA Number33D0674565
Laboratory TypePhysician Office
Certificate Effective DateDecember 23, 2025
Certificate Expiration DateDecember 22, 2027
Laboratory DirectorCollins F. Kellogg
Laboratory Phone(315) 782-2141
Laboratory LocationWatertown Internists53-59 Public Square, Watertown, NY 13601
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 Watertown Internists PC's NPI number?

The NPI number for Watertown Internists PC is 1609844463. It was assigned to this organization in the NPPES registry on March 9, 2006.

Where is Watertown Internists PC located?

Watertown Internists PC is located at 53-59 Public Square Suite 301, Watertown, NY 13601. The listed phone number is (315) 782-2141.

What is Watertown Internists PC's specialty?

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

Is Watertown Internists PC enrolled in Medicare?

Yes. Watertown Internists PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Watertown Internists PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 10 clinicians in 3 Medicare specialties reassign their Medicare billing to Watertown Internists 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. The largest specialties are Nurse Practitioner (5), Internal Medicine (4) and Family Practice (1). Of these, 9 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Watertown Internists PC hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 33D0674565) is associated with this NPI, valid through December 22, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Watertown Internists PC was last updated on August 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.