RIAD R. HAJJAR MD PC
NPI 1164620753
Internal Medicine in Port Huron, MI
About Riad R. Hajjar Md Pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RIAD R. HAJJAR MD PC (NPI 1164620753) is a healthcare organization registered as an internal medicine in Port Huron, Michigan and active in the NPI registry since July 2007. The organization holds a CLIA Waiver certificate valid through September 22, 2027 and lists Carol Klann, Office Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Riad R. Hajjar Md Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by October 31, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to Riad R. Hajjar MD PC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.
Clinicians, nearest first (2)
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 23D1053649
Riad R Hajjar MD, PC · Port Huron, MIFrequently 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 Riad R. Hajjar MD PC's NPI number?
The NPI number for Riad R. Hajjar MD PC is 1164620753. It was assigned to this organization in the NPPES registry on July 5, 2007.
Where is Riad R. Hajjar MD PC located?
Riad R. Hajjar MD PC is located at 1201 Stone St Ste 5, Port Huron, MI 48060. The listed phone number is (810) 966-9556.
What is Riad R. Hajjar MD PC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Riad R. Hajjar MD PC enrolled in Medicare?
Yes. Riad R. Hajjar MD PC is registered in the Medicare PECOS enrollment system.
When is Riad R. Hajjar MD PC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Michigan, Clinic/Group Practice) is due for revalidation by October 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Riad R. Hajjar MD PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Riad R. Hajjar MD PC, in Internal Medicine and Nurse Practitioner. 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. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Riad R. Hajjar MD PC hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 23D1053649) is associated with this NPI, valid through September 22, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Riad R. Hajjar MD PC accept?
Health plans from Blue Cross Blue Shield of Michigan Mutual Insurance Company list Riad R. Hajjar MD PC 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 Riad R. Hajjar MD PC was last updated on December 17, 2009. 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.
# Riad R. Hajjar Md Pc · NPI 1164620753
Internal Medicine organization in Port Huron, Michigan. Organization record, active in the CMS NPPES registry since July 5, 2007.
## Identity
- **NPI:** 1164620753 (Entity type: Organization)
- **Enumerated:** July 5, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Carol Klann, OFFICE MANAGER
## Practice location
- **Address:** 1201 STONE ST, STE 5, Port Huron, MI 48060-3563
- **Phone:** (810) 966-9556 · **Fax:** (810) 966-4898
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** October 31, 2026 (Non-DME Part B, Michigan, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 2 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (1), Nurse Practitioner (1); 2 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 17, 2009
- **Other identifiers:** Medicare UPIN G59776 (MI); Other 207R00000X (MI); Other D5959; and 3 more
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1164620753) · Data from the CMS NPPES public registry.