MARGARET OHRYN CRNA
NPI 1568430247
Nurse Anesthetist, Certified Registered in Royal Oak, MI
About Margaret Ohryn Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET OHRYN CRNA (NPI 1568430247) is an individual nurse anesthetist, certified registered in Royal Oak, Michigan, licensed in Michigan (4704118576) 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)
Margaret Ohryn Crna is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Margaret Ohryn reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Farmington Hills, MI 48334
- Reassigned Medicare billing, Michigan enrollment
- 199 clinicians in this Medicare group
Novi, MI 48377
- Reassigned Medicare billing, Michigan enrollment
- 188 clinicians in this Medicare group
Flint, MI 48507
- Reassigned Medicare billing, Michigan enrollment
- 28 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
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.
ROYAL OAK, MI 48073
ROYAL OAK, MI 48073
ROYAL OAK, MI 48073
ROYAL OAK, MI 48073
ROYAL OAK, MI 48073
ROYAL OAK, MI 48073
ROYAL OAK, MI 48073
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 Margaret Ohryn's NPI number?
The NPI number for Margaret Ohryn is 1568430247. It was assigned to this individual provider in the NPPES registry on March 9, 2006.
Where is Margaret Ohryn located?
Margaret Ohryn practices at 3601 W. 13 Mile Rd 400 Fsc-Pcs, Royal Oak, MI 48073. The listed phone number is (248) 423-2481.
What is Margaret Ohryn's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Margaret Ohryn enrolled in Medicare?
Yes. Margaret Ohryn is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Margaret Ohryn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Ohryn reassigns Medicare benefits to 3 organizations: Northwestern Services, LLC (Farmington Hills, MI), West Michigan Aas LLC (Novi, MI) and The Digestive Endoscopy Center Of Michigan LLC (Flint, 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 Margaret Ohryn'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 Margaret Ohryn 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.
# Margaret Ohryn, CRNA · NPI 1568430247
Nurse Anesthetist, Certified Registered physician in Royal Oak, Michigan. Individual provider, active in the CMS NPPES registry since March 9, 2006.
## Identity
- **NPI:** 1568430247 (Entity type: Individual)
- **Enumerated:** March 9, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 4704118576 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 3601 W. 13 MILE RD, 400 FSC-PCS, Royal Oak, MI 48073-6769
- **Phone:** (248) 423-2481
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Northwestern Services, LLC (NPI 1083883649, Farmington Hills, MI); West Michigan Aas LLC (NPI 1295149227, Novi, MI); The Digestive Endoscopy Center Of Michigan LLC (NPI 1477861045, Flint, MI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 4304944 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1568430247) · Data from the CMS NPPES public registry.