MARIANA C FLATT CRNA
NPI 1497705149
Nurse Anesthetist, Certified Registered in Ann Arbor, MI
About Mariana C Flatt Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIANA C FLATT CRNA (NPI 1497705149) is an individual nurse anesthetist, certified registered in Ann Arbor, Michigan, licensed in Michigan (4704229910) and active in the NPI registry since May 2006. She is affiliated with University Of Michigan Health System and is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Mariana C Flatt 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
6Medicare enrollment records show Mariana Flatt reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 277 clinicians in this Medicare group
Wyandotte, MI 48192
- Reassigned Medicare billing, Michigan enrollment
- 77 clinicians in this Medicare group
Monroe, MI 48162
- Reassigned Medicare billing, Michigan enrollment
- 109 clinicians in this Medicare group
Southfield, MI 48075
- Reassigned Medicare billing, Michigan enrollment
- 209 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
- 369 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48109 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.
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
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 Mariana Flatt's NPI number?
The NPI number for Mariana Flatt is 1497705149. It was assigned to this individual provider in the NPPES registry on May 12, 2006.
Where is Mariana Flatt located?
Mariana Flatt practices at 1500 E Medical Center Drive 1h247 University Hospital, Ann Arbor, MI 48109. The listed phone number is (734) 936-4280.
What is Mariana Flatt's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Mariana Flatt enrolled in Medicare?
Yes. Mariana Flatt 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 Mariana Flatt's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariana Flatt reassigns Medicare benefits to 6 organizations: Regents Of The University Of Michigan (Ann Arbor, MI), Henry Ford Wyandotte Hospital (Wyandotte, MI), Ambulatory Anesthesia Associates, PC (Monroe, MI), Psj Anesthesia PC (Southfield, MI), Northstar Anesthesia Of Michigan II PC (Irving, TX) and 1 more organization, 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 Mariana Flatt's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mariana Flatt accept?
Health plans from Priority Health list Mariana Flatt 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.
Is Mariana Flatt affiliated with any hospitals?
According to CMS data, Mariana Flatt is affiliated with University Of Michigan Health System.
When was this NPI record last updated?
The NPPES record for Mariana Flatt was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Mariana C Flatt, CRNA · NPI 1497705149
Nurse Anesthetist, Certified Registered physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since May 12, 2006.
## Identity
- **NPI:** 1497705149 (Entity type: Individual)
- **Enumerated:** May 12, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 4704229910 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DRIVE, 1H247 UNIVERSITY HOSPITAL, Ann Arbor, MI 48109-5048
- **Phone:** (734) 936-4280
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of Michigan (NPI 1528010428, Ann Arbor, MI); Henry Ford Wyandotte Hospital (NPI 1386685212, Wyandotte, MI); Ambulatory Anesthesia Associates, PC (NPI 1952350555, Monroe, MI); Psj Anesthesia PC (NPI 1275905796, Southfield, MI); Northstar Anesthesia Of Michigan II PC (NPI 1437268026, Irving, TX); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** July 21, 2022
- **Other identifiers:** Other MB229910 (MI); Medicaid 104834904 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1497705149) · Data from the CMS NPPES public registry.