Rami K. Abumasmah, MD
Hematology & Oncology Physician · Oshkosh, WI
Rami K. Abumasmah, MD is a hematology & oncology physician with a practice address in Oshkosh, Wisconsin, and NPI 1972779551, issued on May 5, 2008. Check the license (Wisconsin 2457, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Rami K. Abumasmah
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 2457 WI
036154874 IL
2021025575 MO
22871 ND
Self-reported in NPPES; status is on the state search - Practice location
- 855 N Westhaven Dr, Oshkosh, WI 54904
- Phone
- (920) 456-7870
- Enumerated
- May 5, 2008
- Record last updated
- Sep 23, 2025
- Fax
- (920) 456-7871
- Medicaid ID
- 100219972 WI
- Medicare enrollment
- Enrolled (PECOS I20250925003261); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 295 in Wisconsin → Look up another NPI →
Also registered at 855 N Westhaven Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ammar Alzoubi, MDInternal Medicine Physician1598773152
- Brittany Aman, CRNACertified Registered Nurse Anesthetist1730730730
Verify Rami K. Abumasmah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 2457Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
514 Medicare Part D claims for 117 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims. 35 claims were for opioids.
Most prescribed
- Anastrozole45 claims
- Abiraterone Acetate43 claims
- Hydroxyurea26 claims
- Lenalidomide25 claims
- Prednisone21 claims
- Acyclovir20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Trinity HealthMinot, ND
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rami K. Abumasmah among 295 hematology & oncology physician records in Wisconsin
Rami K. Abumasmah, MD is one of 295 hematology & oncology physician records with a practice address in Wisconsin. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 54% of them.
- NPI issued2008 · 54% of these records are older, 41% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1997 · median 2004 among the 217 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Wisconsin
There are 295 hematology & oncology physician records in Wisconsin.
All 295 in Wisconsin → Every provider in Oshkosh → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Zahid Dar, MDOshkosh, WI 549041003850645
- Santosh Gowda, M.D.Oshkosh, WI 549041639259823
- Hassaan Jafri, M.D.Oshkosh, WI 549041881076263
- Muhammad Moid, MDOshkosh, WI 549041811929318
- Edgard Badine, MDAppleton, WI 549111528191723
- Avi Bar-Lev, M.D.Appleton, WI 549111124163407
- Amir BistaAppleton, WI 549111427466655
- Demytra Mihailidis, MDAppleton, WI 549111235441023
Common questions
What is Rami K. Abumasmah, MD's NPI number?
Rami K. Abumasmah, MD's National Provider Identifier (NPI) is 1972779551, issued on May 5, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Rami K. Abumasmah, MD located?
The NPPES record lists a practice address at 855 N Westhaven Dr, Oshkosh, WI, 54904. Phone: (920) 456-7870. Providers update this record themselves, so call before visiting.
How can I verify Rami K. Abumasmah, MD's license?
NPPES lists Wisconsin license number 2457, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Rami K. Abumasmah, MD prescribe under Medicare Part D?
In 2024, Rami K. Abumasmah, MD had 514 Medicare Part D claims for 117 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.