RAMI K ABUMASMAH MD
NPI 1972779551
Internal Medicine - Hematology & Oncology in Oshkosh, WI
About Rami K Abumasmah Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RAMI K ABUMASMAH MD (NPI 1972779551) is an individual hematology & oncology provider in Oshkosh, Wisconsin, licensed in Wisconsin (2457) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS, is affiliated with Saint Anthony Medical Center, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
Other Identifiers 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
Rami K Abumasmah 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
2Medicare enrollment records show Rami Abumasmah reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Loves Park, IL 61111
- Reassigned Medicare billing, Illinois enrollment
- 67 clinicians in this Medicare group
Minot, ND 58701
- Reassigned Medicare billing, North Dakota enrollment
- 339 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 3
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Saint Anthony Medical Center
Acute Care Hospitals · Rockford, ILTrinity Hospitals
Acute Care Hospitals · Minot, NDSt Andrew's Hospital
Critical Access Hospitals · Bottineau, NDSt Luke's Hospital
Critical Access Hospitals · Crosby, NDFairfield Medical Center
Acute Care Hospitals · Lancaster, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54904 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.
OSHKOSH, WI 54904
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 Rami Abumasmah's NPI number?
The NPI number for Rami Abumasmah is 1972779551. It was assigned to this individual provider in the NPPES registry on May 5, 2008.
Where is Rami Abumasmah located?
Rami Abumasmah practices at 855 N Westhaven Dr, Oshkosh, WI 54904. The listed phone number is (920) 456-7870.
What is Rami Abumasmah's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Rami Abumasmah enrolled in Medicare?
Yes. Rami Abumasmah 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 Rami Abumasmah's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rami Abumasmah reassigns Medicare benefits to 2 organizations: Saint Anthony Medical Center (Loves Park, IL) and Trinity Health (Minot, ND). 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 Rami Abumasmah's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rami Abumasmah accept?
Health plans from Blue Cross Blue Shield of North Dakota, CareSource and Sanford Health Plan list Rami Abumasmah 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 Rami Abumasmah affiliated with any hospitals?
According to CMS data, Rami Abumasmah is affiliated with Saint Anthony Medical Center, Trinity Hospitals, St Andrew's Hospital, St Luke's Hospital and Fairfield Medical Center.
When was this NPI record last updated?
The NPPES record for Rami Abumasmah was last updated on September 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Rami K Abumasmah, MD · NPI 1972779551
Hematology & Oncology physician in Oshkosh, Wisconsin. Individual provider, active in the CMS NPPES registry since May 5, 2008.
## Identity
- **NPI:** 1972779551 (Entity type: Individual)
- **Enumerated:** May 5, 2008
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** 2457 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 855 N WESTHAVEN DR, Oshkosh, WI 54904-7668
- **Phone:** (920) 456-7870 · **Fax:** (920) 456-7871
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Saint Anthony Medical Center (NPI 1508567298, Loves Park, IL); Trinity Health (NPI 1871532598, Minot, ND) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1997
## Record status
- **NPPES last updated:** September 23, 2025
- **Other identifiers:** Medicaid 100219972 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1972779551) · Data from the CMS NPPES public registry.