MARY ROSE CALDERONE HAAS M.D.
NPI 1023429891
Emergency Medicine in Ann Arbor, MI
About Mary Rose Calderone Haas M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY ROSE CALDERONE HAAS M.D. (NPI 1023429891) is an individual emergency medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301104853) and active in the NPI registry since May 2014. She is enrolled in Medicare PECOS.
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 (PECOS)
Mary Rose Calderone Haas M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Haas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 2,377 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.
Physician 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 Mary Haas's NPI number?
The NPI number for Mary Haas is 1023429891. It was assigned to this individual provider in the NPPES registry on May 15, 2014. The provider is also known as Mary Calderone.
Where is Mary Haas located?
Mary Haas practices at 1500 E Medical Center Drive B1 Floor University Hospital Recp Emergency, Ann Arbor, MI 48109. The listed phone number is (734) 936-6666.
What is Mary Haas's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mary Haas enrolled in Medicare?
Yes. Mary Haas is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Haas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Haas reassigns Medicare benefits to Regents Of The University Of Michigan (Ann Arbor, MI). The 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 Haas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Haas accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Mary Haas 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 Haas was last updated on December 13, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Mary Rose Calderone Haas, M.D. · NPI 1023429891
Emergency Medicine physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since May 15, 2014.
## Identity
- **NPI:** 1023429891 (Entity type: Individual)
- **Enumerated:** May 15, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 4301104853 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DRIVE, B1 FLOOR UNIVERSITY HOSPITAL RECP EMERGENCY, Ann Arbor, MI 48109-5301
- **Phone:** (734) 936-6666
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Regents Of The University Of Michigan (NPI 1003848144, Ann Arbor, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 13, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1023429891) · Data from the CMS NPPES public registry.