DR. NASSER ELSOURI MD
NPI 1609885151
Internal Medicine - Critical Care Medicine in Detroit, MI
About Dr. Nasser Elsouri Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NASSER ELSOURI MD (NPI 1609885151) is an individual critical care medicine provider in Detroit, Michigan, licensed in Michigan (4301080157) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy Health-st Rita's Medical Center, and maintains a secondary practice location in Hampton.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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
Dr. Nasser Elsouri 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 Reassignments
9Medicare enrollment records show Nasser Elsouri reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Toledo, OH 43604
- Reassigned Medicare billing, Ohio enrollment
- 303 clinicians in this Medicare group
Saginaw, MI 48602
- Reassigned Medicare billing, Michigan enrollment
- 720 clinicians in this Medicare group
Lima, OH 45801
- Reassigned Medicare billing, Ohio enrollment
- 439 clinicians in this Medicare group
Lima, OH 45801
- Reassigned Medicare billing, Ohio enrollment
- 85 clinicians in this Medicare group
Rockford, MI 49341
- Reassigned Medicare billing, Michigan enrollment
- 737 clinicians in this Medicare group
Parkersburg, WV 26101
- Reassigned Medicare billing, West Virginia enrollment
- 461 clinicians in this Medicare group
Norfolk, VA 23502
- Reassigned Medicare billing, Virginia enrollment
- 1,901 clinicians in this Medicare group
Boca Raton, FL 33431
- Reassigned Medicare billing, Florida enrollment
- 139 clinicians in this Medicare group
Aventura, FL 33180
- Reassigned Medicare billing, Florida enrollment
- 287 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 5
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Health-St Rita's Medical Center
Acute Care Hospitals · Lima, OHPromedica Toledo Hospital
Acute Care Hospitals · Toledo, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
DETROIT, MI 48201
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 Nasser Elsouri's NPI number?
The NPI number for Nasser Elsouri is 1609885151. It was assigned to this individual provider in the NPPES registry on August 5, 2006.
Where is Nasser Elsouri located?
Nasser Elsouri practices at 4646 John R St 11M, Detroit, MI 48201. The listed phone number is (313) 576-3724.
What is Nasser Elsouri's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Nasser Elsouri enrolled in Medicare?
Yes. Nasser Elsouri 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 Nasser Elsouri's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nasser Elsouri reassigns Medicare benefits to 9 organizations: Promedica Multi Specialty Physicians (Toledo, OH), Covenant Medical Center, Inc (Saginaw, MI), Mercy Health Physicians Lima Specialty Care LLC (Lima, OH), Knd Development 59 LLC (Lima, OH), Advantage Health Saint Mary's Medical Group (Rockford, 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 Nasser Elsouri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nasser Elsouri accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 5 other insurers list Nasser Elsouri 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 Nasser Elsouri affiliated with any hospitals?
According to CMS data, Nasser Elsouri is affiliated with Mercy Health-St Rita's Medical Center and Promedica Toledo Hospital.
When was this NPI record last updated?
The NPPES record for Nasser Elsouri was last updated on December 1, 2023. 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.
# Dr. Nasser Elsouri, MD · NPI 1609885151
Critical Care Medicine physician in Detroit, Michigan. Individual provider, active in the CMS NPPES registry since August 5, 2006.
## Identity
- **NPI:** 1609885151 (Entity type: Individual)
- **Enumerated:** August 5, 2006
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 4301080157 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 4646 JOHN R ST, 11M, Detroit, MI 48201-1916
- **Phone:** (313) 576-3724
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 9 organizations under Medicare reassignment (form CMS-855R): Promedica Multi Specialty Physicians (NPI 1306105150, Toledo, OH); Covenant Medical Center, Inc (NPI 1063955136, Saginaw, MI); Mercy Health Physicians Lima Specialty Care LLC (NPI 1518589803, Lima, OH); Knd Development 59 LLC (NPI 1679861249, Lima, OH); Advantage Health Saint Mary's Medical Group (NPI 1083014914, Rockford, MI); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ohio University, College Of Osteopathic Medicine, class of 2019
## Record status
- **NPPES last updated:** December 1, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1609885151) · Data from the CMS NPPES public registry.