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PRINCETON INTERNAL MEDICINE AND GERIATRICS LLC
NPI 1669030250
Internal Medicine in Princeton, NJ

Active since May 30, 2019CLIA 31D2171579 · Waiver
800 BUNN DR STE 302, PRINCETON, NJ 08540(732) 319-0713 Get Directions Write a Review

NPPES record last updated: May 30, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Princeton Internal Medicine And Geriatrics Llc NPPES

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

PRINCETON INTERNAL MEDICINE AND GERIATRICS LLC (NPI 1669030250) is a healthcare organization registered as an internal medicine in Princeton, New Jersey and active in the NPI registry since May 2019. The organization holds a CLIA Waiver certificate valid through September 3, 2027 and lists Erinn Elizabeth Beagin, Physician, as its authorized official.

NPPES Registry Identity

NPI1669030250
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NamePRINCETON INTERNAL MEDICINE AND GERIATRICS LLC
Location Address800 BUNN DR STE 302Princeton, NJ 08540-1968
Mailing Address5 Nancy StKendall Park, NJ 08824-1652 · (732) 319-0713
Phone(732) 319-0713
Organization SubpartNo
Authorized OfficialErinn Elizabeth BeaginPhysician · (732) 319-0713
Enumeration DateMay 30, 2019
✔ NPI 1669030250 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ 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.
Also ListedInternal Medicine · Geriatric MedicineTaxonomy 207RG0300X
Also ListedInternal Medicine · Hospice and Palliative MedicineTaxonomy 207RH0002X
800 BUNN DR STE 302, Princeton, NJ 08540
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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)

Princeton Internal Medicine And Geriatrics Llc 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 Princeton Internal Medicine And Geriatrics LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Erinn Beagin, M.D.
Internal Medicine
NPI 1619924388
800 BUNN DR STE 302
Princeton, NJ 08540
(609) 921-1680
✔ PECOS✔ Accepts Medicare0.1 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 31D2171579

Princeton Internal Medicine And Geriatrics, LLC · Princeton, NJ
Active · expires Sep 3, 2027
CLIA Number31D2171579
Laboratory TypePhysician Office
Certificate Effective DateSeptember 4, 2025
Certificate Expiration DateSeptember 3, 2027
Laboratory DirectorErinn E. Beagin
Laboratory Phone(609) 921-1680
Laboratory LocationPrinceton Internal Medicine And Geriatrics, LLC800 Bunn Drive, Suite 302, Princeton, NJ 08540
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 Princeton Internal Medicine And Geriatrics LLC's NPI number?

The NPI number for Princeton Internal Medicine And Geriatrics LLC is 1669030250. It was assigned to this organization in the NPPES registry on May 30, 2019.

Where is Princeton Internal Medicine And Geriatrics LLC located?

Princeton Internal Medicine And Geriatrics LLC is located at 800 Bunn Dr Ste 302, Princeton, NJ 08540. The listed phone number is (732) 319-0713.

What is Princeton Internal Medicine And Geriatrics LLC's specialty?

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

Is Princeton Internal Medicine And Geriatrics LLC enrolled in Medicare?

Yes. Princeton Internal Medicine And Geriatrics LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Princeton Internal Medicine And Geriatrics LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Princeton Internal Medicine And Geriatrics 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Princeton Internal Medicine And Geriatrics LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 31D2171579) is associated with this NPI, valid through September 3, 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 Princeton Internal Medicine And Geriatrics LLC was last updated on May 30, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.