DR. MARCUS ROBERT OSMAN MD
NPI 1144967191
Internal Medicine - Gastroenterology in Rochester, MN
About Dr. Marcus Robert Osman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARCUS ROBERT OSMAN MD (NPI 1144967191) is an individual gastroenterology provider in Rochester, Minnesota, licensed in Minnesota (82316) and active in the NPI registry since May 2022. He is enrolled in Medicare PECOS, is affiliated with University Of Iowa Hospital & Clinics, and maintains a secondary practice location in Iowa City.
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. Marcus Robert Osman 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 Marcus Osman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Rochester, MN 55905
- Reassigned Medicare billing, Minnesota enrollment
- 6,534 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Iowa Hospital & Clinics
Acute Care Hospitals · Iowa City, IAMayo Clinic Hospital Rochester
Acute Care Hospitals · Rochester, MNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55905 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.
ROCHESTER, MN 55905
ROCHESTER, MN 55905
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 Marcus Osman's NPI number?
The NPI number for Marcus Osman is 1144967191. It was assigned to this individual provider in the NPPES registry on May 19, 2022.
Where is Marcus Osman located?
Marcus Osman practices at 200 1st St SW, Rochester, MN 55905. The listed phone number is (507) 284-2511.
What is Marcus Osman's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Marcus Osman enrolled in Medicare?
Yes. Marcus Osman 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 Marcus Osman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marcus Osman reassigns Medicare benefits to Mayo Clinic (Rochester, MN). 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 Marcus Osman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marcus Osman accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Insurance Company and 2 other insurers list Marcus Osman 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 Marcus Osman affiliated with any hospitals?
According to CMS data, Marcus Osman is affiliated with University Of Iowa Hospital & Clinics and Mayo Clinic Hospital Rochester.
When was this NPI record last updated?
The NPPES record for Marcus Osman was last updated on June 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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. Marcus Robert Osman, MD · NPI 1144967191
Gastroenterology physician in Rochester, Minnesota. Individual provider, active in the CMS NPPES registry since May 19, 2022.
## Identity
- **NPI:** 1144967191 (Entity type: Individual)
- **Enumerated:** May 19, 2022
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 82316 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 1ST ST SW, Rochester, MN 55905-0001
- **Phone:** (507) 284-2511
## 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:** Mayo Clinic (NPI 1114343860, Rochester, MN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of North Dakota School Of Medicine, class of 2022
## Record status
- **NPPES last updated:** June 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1144967191) · Data from the CMS NPPES public registry.