MARY E AHN CRNA
NPI 1568435766
Nurse Anesthetist, Certified Registered in Atlanta, GA
About Mary E Ahn Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY E AHN CRNA (NPI 1568435766) is an individual nurse anesthetist, certified registered in Atlanta, Georgia, licensed in Georgia (RN332897) and active in the NPI registry since February 2006. She is a graduate of Other (1997).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mary E Ahn Crna is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
9Medicare enrollment records show Mary Ahn reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newnan, GA 30265
- Reassigned Medicare billing, Georgia enrollment
- 729 clinicians in this Medicare group
Gainesville, GA 30501
- Reassigned Medicare billing, Georgia enrollment
- 489 clinicians in this Medicare group
Savannah, GA 31404
- Reassigned Medicare billing, Georgia enrollment
- 468 clinicians in this Medicare group
Bradenton, FL 34208
- Reassigned Medicare billing, Georgia enrollment
- 386 clinicians in this Medicare group
Ann Arbor, MI 48108
- Reassigned Medicare billing, Michigan enrollment
- Also billed through NPI 1528010428 (Michigan)
- 2,377 clinicians in this Medicare group
Ypsilanti, MI 48197
- Reassigned Medicare billing, Michigan enrollment
- 123 clinicians in this Medicare group
Ypsilanti, MI 48197
- Reassigned Medicare billing, Michigan enrollment
- 35 clinicians in this Medicare group
Novi, MI 48377
- Reassigned Medicare billing, Michigan enrollment
- 188 clinicians in this Medicare group
Berwyn, PA 19312
- Reassigned Medicare billing, Pennsylvania enrollment
- 3,488 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 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30308 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Mary Ahn's NPI number?
The NPI number for Mary Ahn is 1568435766. It was assigned to this individual provider in the NPPES registry on February 8, 2006. The provider is also known as Mary E Huefner Crna.
Where is Mary Ahn located?
Mary Ahn practices at 505 Peachtree St NE Ste 1660, Atlanta, GA 30308. The listed phone number is (404) 881-1094.
What is Mary Ahn's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Mary Ahn enrolled in Medicare?
Yes. Mary Ahn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mary Ahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Ahn reassigns Medicare benefits to 9 organizations: Sentry Anesthesia Management, LLC (Newnan, GA), Gi Anesthesia Of Georgia LLC (Gainesville, GA), Coastal Ambulatory Anesthesia LLC (Savannah, GA), Anesthesia Dynamics LLC (Bradenton, FL), Regents Of The University Of Michigan (Ann Arbor, MI) and 4 more organizations, listed in the Medicare section above. 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 Mary Ahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Ahn accept?
Health plans from Oscar Health and Oscar Insurance Company list Mary Ahn 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 Mary Ahn was last updated on October 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Mary E Ahn, CRNA · NPI 1568435766
Nurse Anesthetist, Certified Registered physician in Atlanta, Georgia. Individual provider, active in the CMS NPPES registry since February 8, 2006.
## Identity
- **NPI:** 1568435766 (Entity type: Individual)
- **Enumerated:** February 8, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** RN332897 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PEACHTREE ST NE STE 1660, Atlanta, GA 30308-3108
- **Phone:** (404) 881-1094
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 9 organizations under Medicare reassignment (form CMS-855R): Sentry Anesthesia Management, LLC (NPI 1134544794, Newnan, GA); Gi Anesthesia Of Georgia LLC (NPI 1326569187, Gainesville, GA); Coastal Ambulatory Anesthesia LLC (NPI 1750753786, Savannah, GA); Anesthesia Dynamics LLC (NPI 1073001012, Bradenton, FL); Regents Of The University Of Michigan (NPI 1770508350, Ann Arbor, MI); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1997
## Record status
- **NPPES last updated:** October 21, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1568435766) · Data from the CMS NPPES public registry.