DR. CYNTHIA K AARON M.D.
NPI 1922056829
Emergency Medicine - Medical Toxicology in Detroit, MI
About Dr. Cynthia K Aaron M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CYNTHIA K AARON M.D. (NPI 1922056829) is an individual medical toxicology provider in Detroit, Michigan, licensed in Michigan (4301084343) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Cynthia K Aaron M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Cynthia Aaron reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Detroit, MI 48201
- Reassigned Medicare billing, Michigan enrollment
- 83 clinicians in this Medicare group
Livonia, MI 48154
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Epmg Of Michigan PC
- 175 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DETROIT, MI 48201
DETROIT, MI 48201
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 Cynthia Aaron's NPI number?
The NPI number for Cynthia Aaron is 1922056829. It was assigned to this individual provider in the NPPES registry on May 4, 2006.
Where is Cynthia Aaron located?
Cynthia Aaron practices at 4160 John R St Suite 616, Detroit, MI 48201. The listed phone number is (313) 993-8791.
What is Cynthia Aaron's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Medical Toxicology, with taxonomy code 207PT0002X.
Is Cynthia Aaron enrolled in Medicare?
Yes. Cynthia Aaron is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Cynthia Aaron's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Aaron reassigns Medicare benefits to 2 organizations: Michigan Emergency Services (Detroit, MI) and Epmg Of Michigan, P.C. (Livonia, MI). Each 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 Cynthia Aaron's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Cynthia Aaron was last updated on February 13, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Cynthia K Aaron, M.D. · NPI 1922056829
Medical Toxicology physician in Detroit, Michigan. Individual provider, active in the CMS NPPES registry since May 4, 2006.
## Identity
- **NPI:** 1922056829 (Entity type: Individual)
- **Enumerated:** May 4, 2006
- **Primary specialty:** Emergency Medicine - Medical Toxicology · taxonomy 207PT0002X
- **State license:** 4301084343 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 4160 JOHN R ST, SUITE 616, Detroit, MI 48201-2020
- **Phone:** (313) 993-8791
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Michigan Emergency Services (NPI 1316968191, Detroit, MI); Epmg Of Michigan, P.C. (NPI 1386688992, Livonia, MI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 13, 2008
- **Other identifiers:** Other CA084343 (MI); Medicare ID-Type Unspecified M16430007 (MI); Medicare UPIN B40855 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1922056829) · Data from the CMS NPPES public registry.