Zahid N. Dar, MD
Hematology & Oncology Physician · Oshkosh, WI
Zahid N. Dar, MD is a hematology & oncology physician with a practice address in Oshkosh, Wisconsin, and NPI 1003850645, issued on Jun 15, 2006. Check the license (Wisconsin 45747, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Zahid N. Dar
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 45747 WI
Self-reported in NPPES; status is on the state search - Practice location
- 855 N Westhaven Dr, Oshkosh, WI 54904
- Phone
- (920) 303-8700
- Enumerated
- Jun 15, 2006
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 34400100 WI
- Medicare enrollment
- Enrolled (PECOS I20040622001117); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- 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.
- Rami Abumasmah, MDHematology & Oncology Physician1972779551
- Abdulmajid AdamHospitalist Physician1528362258
- Awais Ahmed, MDGastroenterology Physician1316213481
- Kate Alexander, PA-CPhysician Assistant1700466414
- Hussein Alramini, M.D.Hospitalist Physician1497106512
- Ammar Alzoubi, MDInternal Medicine Physician1598773152
Verify Zahid N. Dar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 45747Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,704 Medicare Part D claims for 333 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 52 claims were for opioids.
Most prescribed
- Letrozole144 claims
- Prochlorperazine Maleate131 claims
- Acyclovir113 claims
- Anastrozole86 claims
- Abiraterone Acetate74 claims
- Prednisone73 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.
Industry payments in 2024: $48.78
1 payment: food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Aurora Medical Group, Inc.Milwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zahid N. Dar among 295 hematology & oncology physician records in Wisconsin
Zahid N. Dar, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1988 · median 2004 among the 217 with a school on file
- Record last updated2021 · 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
- Rami Abumasmah, MDOshkosh, WI 549041972779551
- 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 Zahid N. Dar, MD's NPI number?
Zahid N. Dar, MD's National Provider Identifier (NPI) is 1003850645, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Zahid N. Dar, MD located?
The NPPES record lists a practice address at 855 N Westhaven Dr, Oshkosh, WI, 54904. Phone: (920) 303-8700. Providers update this record themselves, so call before visiting.
How can I verify Zahid N. Dar, MD's license?
NPPES lists Wisconsin license number 45747, 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 Zahid N. Dar, MD prescribe under Medicare Part D?
In 2024, Zahid N. Dar, MD had 1,704 Medicare Part D claims for 333 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.