Zachary Graff, M.D.
Medical Oncology Physician · Milwaukee, WI
Zachary Graff, M.D. is a medical oncology physician with a practice address in Milwaukee, Wisconsin, and NPI 1952798274, issued on Apr 24, 2015. Check the license (Wisconsin 75598, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Zachary Graff
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 75598 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9000 W Wisconsin Ave, Milwaukee, WI 53226
- Phone
- (414) 955-4170
- Enumerated
- Apr 24, 2015
- Record last updated
- Jul 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (414) 955-6543
- Medicare enrollment
- Enrolled (PECOS I20210903002349); accepts Medicare assignment
- Medical or professional school
- Texas Tech University Health Science Center School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 69 in Wisconsin → Look up another NPI →
Also registered at 9000 W Wisconsin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lynn Abad-Santos, APNPPediatric Nurse Practitioner1184675696
- Steven AbramowskiPediatric Nurse Practitioner1871118802
- Thomas Abshire, MDPediatric Hematology & Oncology Physician1730249681
- Elham Abushanab, M.D.Neurology with Special Qualifications in Child Neurology Physician1306392634
- Samuel Adams, M.D.Neurology with Special Qualifications in Child Neurology Physician1972947224
- Adeleye Afolayan, M.DNeonatal-Perinatal Medicine Physician1760649776
Verify Zachary Graff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 75598Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Childrens Specialty Group IncMilwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Graff among 69 medical oncology physician records in Wisconsin
Zachary Graff, M.D. is one of 69 medical oncology physician records with a practice address in Wisconsin. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 86% of them.
- NPI issued2015 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2015 · median 2001 among the 46 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Wisconsin
There are 69 medical oncology physician records in Wisconsin.
All 69 in Wisconsin → Every provider in Milwaukee → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Hui-Zi Chen, M.D., PH.D.Milwaukee, WI 532261386082691
- Nicholas Choong, M.D.Milwaukee, WI 532261225199813
- Sumana Devata, MDMilwaukee, WI 532261265609564
- Alexandria Phan, M.D.Milwaukee, WI 532261821016148
- Paul Ritch, MDMilwaukee, WI 532261720030430
- Stuart Wong, MDMilwaukee, WI 532261265483291
- Francis Cuevas, MDFranklin, WI 531321467413591
- Steven Bettag, MDSheboygan, WI 530811669529608
Common questions
What is Zachary Graff, M.D.'s NPI number?
Zachary Graff, M.D.'s National Provider Identifier (NPI) is 1952798274, issued on Apr 24, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Graff, M.D. located?
The NPPES record lists a practice address at 9000 W Wisconsin Ave, Milwaukee, WI, 53226. Phone: (414) 955-4170. Providers update this record themselves, so call before visiting.
How can I verify Zachary Graff, M.D.'s license?
NPPES lists Wisconsin license number 75598, 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.
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.