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NATICK GENERAL PRACTICE P C
NPI 1689808677
Internal Medicine in Natick, MA

Active since May 06, 2009CLIA 22D1100703 · Waiver
67 UNION ST, SUITE 102, NATICK, MA 01760(508) 650-7616(508) 650-7814 Get Directions Write a Review

NPPES record last updated: September 3, 2009. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Natick General Practice P C NPPES

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

NATICK GENERAL PRACTICE P C (NPI 1689808677) is a healthcare organization registered as an internal medicine in Natick, Massachusetts and active in the NPI registry since May 2009. The organization holds a CLIA Waiver certificate valid through June 10, 2027 and lists Rentata C Ratusznik-martin, General Partner, as its authorized official.

NPPES Registry Identity

NPI1689808677
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameNATICK GENERAL PRACTICE P C
Location Address67 UNION ST, SUITE 102Natick, MA 01760-7700
Mailing Address67 Union St, Suite 102Natick, MA 01760-7700 · (508) 650-7616 · Fax (508) 650-7814
Phone(508) 650-7616
Fax(508) 650-7814
Organization SubpartNo
Authorized OfficialRentata C Ratusznik-martinGeneral Partner · (508) 650-7615
Enumeration DateMay 6, 2009
Last NPPES UpdateSeptember 3, 2009
✔ NPI 1689808677 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 159545
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.
67 UNION ST, Natick, MA 01760
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Other Identifiers 2

Medicare UPING53610MA
Medicare PIN0010881MA

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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Natick General Practice P C 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 Natick General Practice P C, which bills Medicare for the services this clinician delivers.

Clinician (1)

Renata Ratusznik Martin, M.D.
Family Practice
NPI 1912971284
850 HARRISON AVE YAWKEY 2
Boston, MA 02118
(617) 414-2080
✔ PECOS✔ Accepts Medicare14 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 Waiver 22D1100703

Natick General Practice · Natick, MA
Active · expires Jun 10, 2027
CLIA Number22D1100703
Laboratory TypePhysician Office
Certificate Effective DateJune 11, 2025
Certificate Expiration DateJune 10, 2027
Laboratory DirectorRenata Ratusznik Martin
Laboratory Phone(508) 907-6201
Laboratory LocationNatick General Practice67 Union Street Suite 303, Natick, MA 01760
CLIA data matches this NPI record on: Address Name
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 Natick General Practice P C's NPI number?

The NPI number for Natick General Practice P C is 1689808677. It was assigned to this organization in the NPPES registry on May 6, 2009.

Where is Natick General Practice P C located?

Natick General Practice P C is located at 67 Union St Suite 102, Natick, MA 01760. The listed phone number is (508) 650-7616.

What is Natick General Practice P C's specialty?

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

Is Natick General Practice P C enrolled in Medicare?

Yes. Natick General Practice P C is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Natick General Practice P C?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Natick General Practice P C. 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 Natick General Practice P C hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 22D1100703) is associated with this NPI, valid through June 10, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Natick General Practice P C accept?

Health plans from Anthem Blue Cross and Blue Shield list Natick General Practice P C as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Natick General Practice P C was last updated on September 3, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.