SANTINA MARRAS CRNA
NPI 1912964545
Nurse Anesthetist, Certified Registered in Ann Arbor, MI
About Santina Marras Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SANTINA MARRAS CRNA (NPI 1912964545) is an individual nurse anesthetist, certified registered in Ann Arbor, Michigan, licensed in Michigan (4704158739) and active in the NPI registry since April 2006. She is affiliated with University Of Michigan Health System, maintains a secondary practice location in Detroit, and is a graduate of Other (2004).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Santina Marras 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 Santina Marras 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
- Also billed through NPI 1003848144 (Michigan)
- 277 clinicians in this Medicare group
Waterford, MI 48327
- Reassigned Medicare billing, Michigan enrollment
- 49 clinicians in this Medicare group
Detroit, MI 48243
- Reassigned Medicare billing, Michigan enrollment
- 15 clinicians in this Medicare group
Troy, MI 48098
- Reassigned Medicare billing, Michigan enrollment
- 176 clinicians in this Medicare group
Saint Clair Shores, MI 48082
- Reassigned Medicare billing, Michigan enrollment
- 45 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.
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 Santina Marras's NPI number?
The NPI number for Santina Marras is 1912964545. It was assigned to this individual provider in the NPPES registry on April 27, 2006.
Where is Santina Marras located?
Santina Marras practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.
What is Santina Marras's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Santina Marras enrolled in Medicare?
Yes. Santina Marras 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 Santina Marras's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Santina Marras reassigns Medicare benefits to 6 organizations: Regents Of The University Of Michigan (Ann Arbor, MI), Waterford Anesthesia, PLLC (Waterford, MI), Detroit Anesthesia Services PLLC (Detroit, MI), Superior Anesthetists Associates, Inc. (Troy, MI), Radius Anesthesia Of Michigan PLLC (Saint Clair Shores, MI) 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 Santina Marras's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Santina Marras accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Santina Marras 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 Santina Marras affiliated with any hospitals?
According to CMS data, Santina Marras is affiliated with University Of Michigan Health System.
When was this NPI record last updated?
The NPPES record for Santina Marras was last updated on September 29, 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.
# Santina Marras, CRNA · NPI 1912964545
Nurse Anesthetist, Certified Registered physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since April 27, 2006.
## Identity
- **NPI:** 1912964545 (Entity type: Individual)
- **Enumerated:** April 27, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 4704158739 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109-5000
- **Phone:** (734) 936-4000
## 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); Waterford Anesthesia, PLLC (NPI 1376862474, Waterford, MI); Detroit Anesthesia Services PLLC (NPI 1225607393, Detroit, MI); Superior Anesthetists Associates, Inc. (NPI 1831144518, Troy, MI); Radius Anesthesia Of Michigan PLLC (NPI 1578002523, Saint Clair Shores, MI); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** September 29, 2022
- **Other identifiers:** Other SM158739 (MI); Medicaid 104718979 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1912964545) · Data from the CMS NPPES public registry.