RAMI K ABUMASMAH MD
NPI 1972779551
Internal Medicine - Hematology & Oncology in Oshkosh, WI

Active since May 05, 2008PECOS EnrolledAccepts Medicare Assignment
855 N WESTHAVEN DR, OSHKOSH, WI 54904(920) 456-7870(920) 456-7871 Get Directions Write a Review

NPPES record last updated: September 23, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 6, 2023, Feb 23, 2023, Dec 16, 2022 and 4 more (7 updates tracked since 2017).

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

NPI1972779551
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameRAMI K ABUMASMAHCredential: MD
Location Address855 N WESTHAVEN DROshkosh, WI 54904-7668
Mailing Address1005 Broadway StQuincy, IL 62301-2834 · (217) 223-8400
Fax(920) 456-7871
Sole ProprietorNo
Medical School CMSOtherGraduated 1997
Enumeration DateMay 5, 2008
Last NPPES UpdateSeptember 23, 20257 updates tracked since enumeration
NPPES CertifiedSeptember 23, 2025
NPI 1972779551 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
Licenses Licensed in WI · 2457 Licensed in ND · 22871
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 2021025575 (MO), 036154874 (IL)
855 N WESTHAVEN DR, Oshkosh, WI 54904

Secondary Practice Locations 3

Location 1100 Fairfield DriveSenaca, PA 16346 · Phone (814) 676-7900 · Fax (814) 676-7887
Location 2455 Toll Gate RdWarwick, RI 02886-2759 · Phone (401) 737-7000 · Fax (401) 736-4546
Location 3831 S BroadwayMinot, ND 58701-4636 · Phone (701) 857-3535 · Fax (701) 857-5171

Other Identifiers 1

Medicaid100219972WI

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID143478636
PECOS Enrollment IDI20250925003261
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
353 services185 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
47 services42 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
46 services35 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Saint Anthony Medical Center

Acute Care Hospitals · Rockford, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140233
Location5666 East State StreetRockford, IL 61108 · Winnebago County
Emergency services Birthing friendly

Trinity Hospitals

Acute Care Hospitals · Minot, ND
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number350006
Location407 3rd St SEMinot, ND 58701 · Ward County
Emergency services Birthing friendly

Tioga Medical Center

Critical Access Hospitals · Tioga, ND
OwnershipVoluntary non-profit - Private
CMS Certification Number351300
Location810 N Welo StTioga, ND 58852 · Williams County
Emergency services

St Andrew's Hospital

Critical Access Hospitals · Bottineau, ND
OwnershipVoluntary non-profit - Church
CMS Certification Number351307
Location316 Ohmer StreetBottineau, ND 58318 · Bottineau County
Emergency services

Physician 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.

New Patient
$163.24 typical visit price
range $53.90 – $163.24
Typical copayment $40.81 (range $13.47 – $40.81)
Most-billed visit code 99205
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Nurse Practitioner
855 N WESTHAVEN DR
OSHKOSH, WI 54904
Pharmacist
855 N WESTHAVEN DR
OSHKOSH, WI 54904
Physician Assistant
855 N WESTHAVEN DR
OSHKOSH, WI 54904
Internal Medicine (Hematology & Oncology)
855 N WESTHAVEN DR
OSHKOSH, WI 54904
Nurse Practitioner
855 N WESTHAVEN DR
OSHKOSH, WI 54904
Nurse Anesthetist, Certified Registered
855 N WESTHAVEN DR
OSHKOSH, WI 54904
Physical Therapist
855 N WESTHAVEN DR
OSHKOSH, WI 54904
Registered Nurse
855 N WESTHAVEN DR
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.

What insurance does Rami Abumasmah accept?

Health plans from 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, Tioga Medical Center and St Andrew's Hospital.

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 10 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.