MEDICAL ASSOCIATES, PC
NPI 1912984980
Internal Medicine in Ypsilanti, MI
About Medical Associates, Pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MEDICAL ASSOCIATES, PC (NPI 1912984980), doing business as Athar Siddiqui, M.d., P.c., is a healthcare organization registered as an internal medicine in Ypsilanti, Michigan and active in the NPI registry since December 2005. The organization holds a CLIA Waiver certificate valid through October 31, 2027 and lists Athar Siddiqui, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 1
Accepted 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)
Medical Associates, Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
8Medicare enrollment records show 8 clinicians reassign Medicare billing to Medical Associates, PC, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 4 within 10 miles. They are listed nearest first.
Clinicians, nearest first (8)
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 23D0369377
Medical Associates, P C · Ypsilanti, 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 Medical Associates, PC's NPI number?
The NPI number for Medical Associates, PC is 1912984980. It was assigned to this organization in the NPPES registry on December 29, 2005. The provider was formerly known as Athar Siddiqui, M.D., P.C..
Where is Medical Associates, PC located?
Medical Associates, PC is located at 428 S Grove St, Ypsilanti, MI 48198. The listed phone number is (734) 483-7136.
What is Medical Associates, PC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Medical Associates, PC enrolled in Medicare?
Yes. Medical Associates, PC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Medical Associates, PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians reassign their Medicare billing to Medical Associates, PC, in Cardiovascular Disease (Cardiology), Diagnostic Radiology, Hospitalist, 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, 3 practice at this address and 4 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Medical Associates, PC hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 23D0369377) is associated with this NPI, valid through October 31, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Medical Associates, PC accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company list Medical Associates, 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 Medical Associates, PC was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Medical Associates, Pc · NPI 1912984980
Internal Medicine organization in Ypsilanti, Michigan. Organization record, active in the CMS NPPES registry since December 29, 2005.
## Identity
- **NPI:** 1912984980 (Entity type: Organization)
- **Enumerated:** December 29, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Athar Siddiqui, PRESIDENT
## Practice location
- **Address:** 428 S GROVE ST, Ypsilanti, MI 48198-5662
- **Phone:** (734) 483-7136 · **Fax:** (734) 483-3422
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 8 clinicians in 5 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Diagnostic Radiology (2), Internal Medicine (2), Nurse Practitioner (2); 3 practice at this address and 4 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 22, 2020
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1912984980) · Data from the CMS NPPES public registry.