PRIMARY CARE SERVICES
NPI 1235461765
Internal Medicine in Lombard, IL
About Primary Care Services NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PRIMARY CARE SERVICES (NPI 1235461765) is a healthcare organization registered as an internal medicine in Lombard, Illinois and active in the NPI registry since February 2010. The organization holds a CLIA Waiver certificate valid through July 16, 2028 and lists Iram Aleem Ahmed, Physician, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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)
Primary Care Services 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 Primary Care Services, which bills Medicare for the services they deliver. Of these, 5 practice at this address. They are listed nearest first.
Clinicians, nearest first (8)
Lombard, IL 60148
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 14D2044079
Primary Care Services S C · Lombard, ILFrequently 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 Primary Care Services's NPI number?
The NPI number for Primary Care Services is 1235461765. It was assigned to this organization in the NPPES registry on February 9, 2010.
Where is Primary Care Services located?
Primary Care Services is located at 2500 S Highland Ave Suite 230, Lombard, IL 60148. The listed phone number is (630) 429-9000.
What is Primary Care Services's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Primary Care Services enrolled in Medicare?
Yes. Primary Care Services is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Primary Care Services?
According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians in 3 Medicare specialties reassign their Medicare billing to Primary Care Services. 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. The largest specialties are Nurse Practitioner (5), Internal Medicine (2) and Nephrology (1). Of these, 5 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Primary Care Services hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 14D2044079) is associated with this NPI, valid through July 16, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Primary Care Services was last updated on March 1, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Primary Care Services · NPI 1235461765
Internal Medicine organization in Lombard, Illinois. Organization record, active in the CMS NPPES registry since February 9, 2010.
## Identity
- **NPI:** 1235461765 (Entity type: Organization)
- **Enumerated:** February 9, 2010
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Iram Ahmed, PHYSICIAN
## Practice location
- **Address:** 2500 S HIGHLAND AVE, SUITE 230, Lombard, IL 60148-5363
- **Phone:** (630) 429-9000 · **Fax:** (630) 429-9060
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 8 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (5), Internal Medicine (2), Nephrology (1); 5 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 1, 2016
- **Other identifiers:** Medicaid 036117593 (IL); Medicare PIN IL3375 (IL); Medicare PIN IL4905 (IL); and 1 more
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1235461765) · Data from the CMS NPPES public registry.