JAMES HEINSIMER MD PC
NPI 1124214952
Internal Medicine - Cardiovascular Disease in Royal Oak, MI
About James Heinsimer Md Pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES HEINSIMER MD PC (NPI 1124214952) is a healthcare organization registered as a cardiovascular disease in Royal Oak, Michigan and active in the NPI registry since September 2007. The organization lists James Heinsimer, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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)
James Heinsimer Md Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by February 28, 2027
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
Medicare enrollment records show 1 clinician reassigns Medicare billing to James Heinsimer MD 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.
Frequently 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 James Heinsimer MD PC's NPI number?
The NPI number for James Heinsimer MD PC is 1124214952. It was assigned to this organization in the NPPES registry on September 14, 2007.
Where is James Heinsimer MD PC located?
James Heinsimer MD PC is located at 3535 W 13 Mile Rd Ste 208, Royal Oak, MI 48073. The listed phone number is (248) 551-0066.
What is James Heinsimer MD PC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is James Heinsimer MD PC enrolled in Medicare?
Yes. James Heinsimer MD PC is registered in the Medicare PECOS enrollment system.
When is James Heinsimer 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 February 28, 2027. 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 James Heinsimer MD PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Cardiovascular Disease (Cardiology)) reassigns their Medicare billing to James Heinsimer MD 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.
What insurance does James Heinsimer MD PC accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan and Ambetter from Meridian list James Heinsimer 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 James Heinsimer MD PC was last updated on October 11, 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.
# James Heinsimer Md Pc · NPI 1124214952
Cardiovascular Disease organization in Royal Oak, Michigan. Organization record, active in the CMS NPPES registry since September 14, 2007.
## Identity
- **NPI:** 1124214952 (Entity type: Organization)
- **Enumerated:** September 14, 2007
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **Organization subpart:** No
- **Authorized official:** James Heinsimer, OWNER
## Practice location
- **Address:** 3535 W 13 MILE RD STE 208, Royal Oak, MI 48073-6770
- **Phone:** (248) 551-0066 · **Fax:** (248) 551-2022
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** February 28, 2027 (Non-DME Part B, Michigan, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1 clinician (Cardiovascular Disease (Cardiology)) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 11, 2007
- **Other identifiers:** Medicare PIN 0N15780 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1124214952) · Data from the CMS NPPES public registry.