DR. CHUN CHEN PRIMARY MEDICAL CARE PC
NPI 1407231350
Internal Medicine in Stony Brook, NY
About Dr. Chun Chen Primary Medical Care Pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHUN CHEN PRIMARY MEDICAL CARE PC (NPI 1407231350) is a healthcare organization registered as an internal medicine in Stony Brook, New York and active in the NPI registry since July 2015. The organization holds a CLIA Waiver certificate valid through November 25, 2027 and lists Chun Chen, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Chun Chen Primary Medical Care Pc 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 Dr. Chun Chen Primary Medical Care PC, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 33D1019757
Dr Chun Chen Primary Medical Care PC · Stony Brook, NYFrequently 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 Dr. Chun Chen Primary Medical Care PC's NPI number?
The NPI number for Dr. Chun Chen Primary Medical Care PC is 1407231350. It was assigned to this organization in the NPPES registry on July 21, 2015.
Where is Dr. Chun Chen Primary Medical Care PC located?
Dr. Chun Chen Primary Medical Care PC is located at 2500 Nesconset Hwy Bldg 8D, Stony Brook, NY 11790. The listed phone number is (631) 366-4550.
What is Dr. Chun Chen Primary Medical Care PC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Dr. Chun Chen Primary Medical Care PC enrolled in Medicare?
Yes. Dr. Chun Chen Primary Medical Care PC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Dr. Chun Chen Primary Medical Care PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Dr. Chun Chen Primary Medical Care 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Dr. Chun Chen Primary Medical Care PC hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 33D1019757) is associated with this NPI, valid through November 25, 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 Dr. Chun Chen Primary Medical Care PC was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Dr. Chun Chen Primary Medical Care Pc · NPI 1407231350
Internal Medicine organization in Stony Brook, New York. Organization record, active in the CMS NPPES registry since July 21, 2015.
## Identity
- **NPI:** 1407231350 (Entity type: Organization)
- **Enumerated:** July 21, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Chun Chen, PRESIDENT
## Practice location
- **Address:** 2500 NESCONSET HWY BLDG 8D, Stony Brook, NY 11790-2552
- **Phone:** (631) 366-4550
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Internal Medicine) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 23, 2026
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1407231350) · Data from the CMS NPPES public registry.