1. Home
  2. Directory
  3. New York
  4. Flushing
  5. Internal Medicine
  6. NPI Profile

FIRST RIVERSIDE MEDICAL CARE P.C.
NPI 1346562949
Internal Medicine in Flushing, NY

Active since February 23, 2010
4242 COLDEN ST, SUITE L17, FLUSHING, NY 11355(718) 661-4800(718) 888-2701 Get Directions Write a Review

NPPES record last updated: February 23, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About First Riverside Medical Care P.c. NPPES

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

FIRST RIVERSIDE MEDICAL CARE P.C. (NPI 1346562949) is a healthcare organization registered as an internal medicine in Flushing, New York and active in the NPI registry since February 2010. The organization lists Xin Tan, President, as its authorized official.

NPPES Registry Identity

NPI1346562949
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameFIRST RIVERSIDE MEDICAL CARE P.C.
Location Address4242 COLDEN ST, SUITE L17Flushing, NY 11355-4855
Mailing Address4242 Colden St, Suite L17Flushing, NY 11355-4855 · (718) 661-4800 · Fax (718) 888-2701
Phone(718) 661-4800
Fax(718) 888-2701
Organization SubpartNo
Authorized OfficialXin TanPresident · (718) 661-4800
Enumeration DateFebruary 23, 2010
✔ NPI 1346562949 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 219846
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.
4242 COLDEN ST, Flushing, NY 11355
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINH31353NY
Medicaid02129591NY

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)

First Riverside Medical Care 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 First Riverside Medical Care P.C., which bills Medicare for the services this clinician delivers.

Clinician (1)

Xin Tan, M.D.
Internal Medicine
NPI 1235117979
4242 COLDEN ST SUITE L17
Flushing, NY 11355
(718) 661-4800
✔ PECOS✔ Accepts MedicareSame address

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 First Riverside Medical Care P.C.'s NPI number?

The NPI number for First Riverside Medical Care P.C. is 1346562949. It was assigned to this organization in the NPPES registry on February 23, 2010.

Where is First Riverside Medical Care P.C. located?

First Riverside Medical Care P.C. is located at 4242 Colden St Suite L17, Flushing, NY 11355. The listed phone number is (718) 661-4800.

What is First Riverside Medical Care P.C.'s specialty?

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

Is First Riverside Medical Care P.C. enrolled in Medicare?

Yes. First Riverside Medical Care P.C. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through First Riverside Medical Care P.C.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to First Riverside Medical Care 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.

When was this NPI record last updated?

The NPPES record for First Riverside Medical Care P.C. was last updated on February 23, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.