ROBERT ALAN CALLEJA MD
NPI 1316521644
Emergency Medicine in Saginaw, MI
About Robert Alan Calleja Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT ALAN CALLEJA MD (NPI 1316521644) is an individual emergency medicine provider in Saginaw, Michigan, licensed in Michigan (4301511291) and active in the NPI registry since May 2021. He is enrolled in Medicare PECOS, is affiliated with Ascension St Mary's Hospital, and maintains a secondary practice location in Royal Oak.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Robert Alan Calleja Md 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 Reassignment
Medicare enrollment records show Robert Calleja reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saginaw, MI 48601
- Reassigned Medicare billing, Michigan enrollment
- 168 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension St Mary's Hospital
Acute Care Hospitals · Saginaw, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48601 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.
SAGINAW, MI 48601
SAGINAW, MI 48601
SAGINAW, MI 48601
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 Robert Calleja's NPI number?
The NPI number for Robert Calleja is 1316521644. It was assigned to this individual provider in the NPPES registry on May 12, 2021.
Where is Robert Calleja located?
Robert Calleja practices at 800 S Washington Ave, Saginaw, MI 48601. The listed phone number is (989) 907-8000.
What is Robert Calleja's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Robert Calleja enrolled in Medicare?
Yes. Robert Calleja 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 organization bills Medicare for Robert Calleja's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Calleja reassigns Medicare benefits to Cep America LLC (Saginaw, 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 Robert Calleja's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Robert Calleja affiliated with any hospitals?
According to CMS data, Robert Calleja is affiliated with Ascension St Mary's Hospital.
When was this NPI record last updated?
The NPPES record for Robert Calleja was last updated on June 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.