ELLEN WARNOCK CRNA
NPI 1386603660
Nurse Anesthetist, Certified Registered in Troy, MI
About Ellen Warnock Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELLEN WARNOCK CRNA (NPI 1386603660) is an individual nurse anesthetist, certified registered in Troy, Michigan, licensed in Michigan (4704128733) and active in the NPI registry since March 2006.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ellen Warnock Crna is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Ellen Warnock reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Royal Oak, MI 48073
- Reassigned Medicare billing, Michigan enrollment
- 278 clinicians in this Medicare group
Irving, TX 75038
- Reassigned Medicare billing, Michigan enrollment
- 283 clinicians in this Medicare group
Irving, TX 75038
- Reassigned Medicare billing, Michigan enrollment
- 905 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.
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.
TROY, MI 48085
TROY, MI 48085
TROY, MI 48085
TROY, MI 48085
TROY, MI 48085
TROY, MI 48085
TROY, MI 48085
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 Ellen Warnock's NPI number?
The NPI number for Ellen Warnock is 1386603660. It was assigned to this individual provider in the NPPES registry on March 23, 2006.
Where is Ellen Warnock located?
Ellen Warnock practices at 44201 Dequindre 400 Fsc - Pcs, Troy, MI 48085. The listed phone number is (248) 423-3144.
What is Ellen Warnock's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Ellen Warnock enrolled in Medicare?
Yes. Ellen Warnock is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ellen Warnock's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Warnock reassigns Medicare benefits to 3 organizations: William Beaumont Hospital (Royal Oak, MI), Northstar Anesthesia Of Michigan II PC (Irving, TX) and Northstar Anesthesia Of Michigan III PLLC (Irving, TX). 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 Ellen Warnock'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 Ellen Warnock was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.
# Ellen Warnock, CRNA · NPI 1386603660
Nurse Anesthetist, Certified Registered physician in Troy, Michigan. Individual provider, active in the CMS NPPES registry since March 23, 2006.
## Identity
- **NPI:** 1386603660 (Entity type: Individual)
- **Enumerated:** March 23, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 4704128733 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 44201 DEQUINDRE, 400 FSC - PCS, Troy, MI 48085-1198
- **Phone:** (248) 423-3144
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): William Beaumont Hospital (NPI 1811044878, Royal Oak, MI); Northstar Anesthesia Of Michigan II PC (NPI 1437268026, Irving, TX); Northstar Anesthesia Of Michigan III PLLC (NPI 1972126209, Irving, TX) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 2743613 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1386603660) · Data from the CMS NPPES public registry.