PETER GRANT, MD, LTD
NPI 1306032297
Clinic/Center - Primary Care in Oak Park, IL
About Peter Grant, Md, Ltd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PETER GRANT, MD, LTD (NPI 1306032297) is a healthcare organization registered as a primary care in Oak Park, Illinois and active in the NPI registry since September 2007. The organization holds a CLIA Waiver certificate valid through April 9, 2027 and lists Peter James Grant, Physician, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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)
Peter Grant, Md, Ltd 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 Peter Grant, MD, Ltd, 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 14D2006070
Peter Grant MD Ltd · Oak Park, 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 Peter Grant, MD, Ltd's NPI number?
The NPI number for Peter Grant, MD, Ltd is 1306032297. It was assigned to this organization in the NPPES registry on September 24, 2007.
Where is Peter Grant, MD, Ltd located?
Peter Grant, MD, Ltd is located at 1011 Lake St Suite 300, Oak Park, IL 60301. The listed phone number is (708) 524-1747.
What is Peter Grant, MD, Ltd's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.
Is Peter Grant, MD, Ltd enrolled in Medicare?
Yes. Peter Grant, MD, Ltd is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Peter Grant, MD, Ltd?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Peter Grant, MD, Ltd. 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 Peter Grant, MD, Ltd hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 14D2006070) is associated with this NPI, valid through April 9, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Peter Grant, MD, Ltd accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Peter Grant, MD, Ltd 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 Peter Grant, MD, Ltd was last updated on September 24, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Peter Grant, Md, Ltd · NPI 1306032297
Primary Care organization in Oak Park, Illinois. Organization record, active in the CMS NPPES registry since September 24, 2007.
## Identity
- **NPI:** 1306032297 (Entity type: Organization)
- **Enumerated:** September 24, 2007
- **Primary specialty:** Clinic/Center - Primary Care · taxonomy 261QP2300X
- **Organization subpart:** No
- **Authorized official:** Peter Grant, PHYSICIAN
## Practice location
- **Address:** 1011 LAKE ST, SUITE 300, Oak Park, IL 60301-1148
- **Phone:** (708) 524-1747
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Family Practice) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 24, 2007
- **Other identifiers:** Medicare UPIN H96704 (IL); Medicaid 03610891106 (IL); Medicare PIN 210249 (IL)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1306032297) · Data from the CMS NPPES public registry.