Dr. Zahid N. Dar, MD
- Medicare services, 2024
- 683
- Medicare patients, 2024
- 262
- Part D claims, 2024
- 1,704
- Hospital affiliations
- 3
- Industry payments
- $94
- Practice address
- 855 N Westhaven Drive, Oshkosh, WI 54904
- Practice phone
- Call (920) 456-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Dar's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Zahid N. Dar is a hematologist and oncologist in Oshkosh, Wisconsin
Dr. Dar practices at Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin, part of Advocate Health.
Dr. Dar's NPI, 1003850645, was assigned on June 15, 2006. Dr. Dar holds Wisconsin license 45747.
- NPI
- 1003850645NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254316391
- NPI enumeration date
- June 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (920) 456-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Zahid N. Dar practices at Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin
Dr. Dar's primary practice is Aurora Medical Center - Oshkosh, at 855 N Westhaven Drive, Oshkosh, WI 54904 in Winnebago County. The practice phone is (920) 456-6000.
- Aurora Medical Center - Oshkosh855 N Westhaven Drive, Oshkosh, WI 54904 · Winnebago CountyPhone(920) 456-6000
Source: Dmand AI Affiliation Data
Dr. Zahid N. Dar is affiliated with 4 sites of care and 2 medical groups
Dr. Dar's primary practice is Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin, part of Advocate Health. Dr. Dar is also affiliated with Aurora St. Luke's Medical Center. The medical group on file is Aurora Medical Group. Dmand AI also links Dr. Dar to 1 more hospital, 1 dialysis center and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Zahid N. Dar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dar practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aurora Medical Center - Oshkosh | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zahid N. Dar is one of 277 hematologists and oncologists in Wisconsin
Hematology and oncology is Dr. Dar's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Dar is licensed in Wisconsin.
Specialties and state licenses
- Hematology and oncology, WisconsinPrimary
Hematologists and oncologists near Dr. Dar
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Zahid N. Dar billed Medicare for 683 services in 2024
CMS data shows 683 Medicare services from Dr. Dar across 3 procedure codes in 2024, all of them office visits, for 262 Medicare patients. Medicare paid $47,021 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Dar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6902024: 6831%
Dr. Dar compared with the Wisconsin median for hematologists and oncologists, 2024
- Dr. Dar
- Wisconsin median
- Medicare services
- 683vs 54525% above
- Medicare patients
- 262vs 17252% above
- Part D claims
- 1,403vs 4463.1 times
Medians across 269 hematologists and oncologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Dar's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dar and other hematologists and oncologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Zahid N. Dar treated 262 Medicare patients in 2024, average age 74
CMS counts 262 Medicare patients who saw Dr. Dar in 2024. The largest group is 65 to 74, with 120 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 2.38, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Dar's median patient age at 72, with 61% women.
Dr. Dar's Medicare patients by age, 2024
Dr. Dar's Medicare patients by sex, 2024
- Women14154%
- Men12146%
Chronic conditions among Dr. Dar's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer59%
- Arthritis46%
- Chronic kidney disease45%
- Diabetes37%
- Ischemic heart disease35%
- COPD27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Zahid N. Dar wrote 1,704 Medicare Part D claims in 2024
In 2024, Dr. Dar wrote 1,704 Medicare Part D claims for 333 patients. 84% of them were for generic drugs. CMS names the drug for 1,403 of them, across 34 drugs with 11 or more claims each, at $671,007 in total drug cost. In 2023, CMS named 1,163 claims across 26 drugs.
Dr. Dar's Part D claims by kind of drug, 2024
- Generic1,435 claims84%
- Brand-name and other269 claims16%
Dr. Dar's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Dar's Part D claims, 2024
- Opioids3%52 of 1,704 claims
- Antibiotics4%73 of 1,704 claims
- Antipsychotics, patients 65 and over1%15 of 1,704 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1632024: 1,40321%
Drugs named by CMS: 34 in 2024, 26 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Zahid N. Dar offers telehealth to Medicare patients
Dr. Dar accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dar as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Zahid N. Dar received $94 in industry payments from 2018 to 2024
CMS Open Payments shows 4 general payments to Dr. Dar from 3 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 52% of the total. Merck Sharp & Dohme Corporation paid the most, $60.
General payments to Dr. Dar by program year, 2018 to 2024
General payments to Dr. Dar by kind, 2018 to 2024
- Food and beverage$4952%
- Education$4548%
Companies that paid Dr. Dar the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Zahid N. Dar's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Zahid N. Dar
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Zahid N. Dar's NPI number?
Dr. Zahid N. Dar's NPI number is 1003850645. It was assigned on June 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Zahid N. Dar?
Dr. Zahid N. Dar is a hematologist and oncologist in Oshkosh, Wisconsin. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Zahid N. Dar practice?
Dr. Dar practices at 855 N Westhaven Drive, Oshkosh, WI 54904. Dr. Dar's primary practice is Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin, part of Advocate Health. Dmand AI also links Dr. Dar to 1 hospital, 1 dialysis center and 1 medical group.
What is Dr. Zahid N. Dar's office phone number?
The practice phone on file for Dr. Dar is (920) 456-6000.
What is Dr. Zahid N. Dar's medical license number?
Dr. Dar holds Wisconsin license 45747.
Which hospitals is Dr. Zahid N. Dar affiliated with?
Dr. Dar practices at Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin. Dr. Dar is also affiliated with Aurora St. Luke's Medical Center. Dmand AI links Dr. Dar to 1 more hospital.
What medical group is Dr. Zahid N. Dar part of?
Dr. Dar is linked to Aurora Medical Group. Dmand AI links Dr. Dar to 1 more medical group.
Does Dr. Zahid N. Dar accept Medicare?
Yes. CMS data shows Dr. Dar billed Medicare for 683 services in 2024, and Dr. Dar accepts Medicare assignment.
Does Dr. Zahid N. Dar offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dar as offering telehealth services.
How many Medicare patients does Dr. Zahid N. Dar see?
CMS counts 262 Medicare patients who saw Dr. Dar in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Zahid N. Dar bill to Medicare?
In 2024, Dr. Dar's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and office visit, established patient (99213).
What drugs does Dr. Zahid N. Dar prescribe most?
In 2024 Medicare Part D data, Dr. Dar's most prescribed drugs by claims were Letrozole, Prochlorperazine Maleate and Acyclovir.
Has Dr. Zahid N. Dar received payments from drug or device companies?
CMS Open Payments shows $94 in general payments to Dr. Dar from 3 companies from 2018 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Zahid N. Dar been practicing?
Dr. Dar graduated from medical school in 1988, 38 years ago.
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