Amber Ann Retzlaff, M.D.
Radiation Oncology Physician · Minneapolis, MN
Amber Ann Retzlaff, M.D. is a radiation oncology physician with a practice address in Minneapolis, Minnesota, and NPI 1679935860, issued on Mar 25, 2016. Check the license (Minnesota 71718, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Amber Ann Retzlaff
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 71718 MN
Self-reported in NPPES; status is on the state search - Practice location
- 800 E 28TH St Ste 401, Minneapolis, MN 55407
- Phone
- (612) 863-0200
- Enumerated
- Mar 25, 2016
- Record last updated
- Jan 22, 2024
- Medicare enrollment
- Enrolled (PECOS I20220817001823); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 160 in Minnesota → Look up another NPI →
Also registered at 800 E 28TH St Ste 401
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eric Anderson, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1962729327
- Annie Barlow, PA-CPhysician Assistant1346518370
- Allison Burgstahler, PAPhysician Assistant1144787680
- Clara DahlPhysician Assistant1184338527
- Evidio Domingo Musibay, MDMedical Oncology Physician1831321785
- Courtney Dorle, PA-CPhysician Assistant1073084463
Verify Amber Ann Retzlaff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 71718Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average radiation oncology physician in 2024
70 Medicare Part D claims for 28 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Dexamethasone14 claims
- Omeprazole12 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
- Allina Health SystemMinneapolis, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amber Ann Retzlaff among 160 radiation oncology physician records in Minnesota
Amber Ann Retzlaff, M.D. is one of 160 radiation oncology physician records with a practice address in Minnesota. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 68% of them.
- NPI issued2016 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2016 · median 2011 among the 119 with a school on file
- Record last updated2024 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Minnesota
There are 160 radiation oncology physician records in Minnesota.
All 160 in Minnesota → Every provider in Minneapolis → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Patsa Sullivan, M.D.Minneapolis, MN 554071013093061
- Brian Jang, MDMinneapolis, MN 554151447830062
- Richard Lee, M.D.Minneapolis, MN 554151679838403
- Natarajan Raman, MDMinneapolis, MN 554151912957036
- Syed Shah, MDMinneapolis, MN 554151679326987
- Joaquin Silva, MDMinneapolis, MN 554171942213004
- Kurt Nisi, MDRobbinsdale, MN 554221881686491
- Colton Gits, M.D.St Louis Park, MN 554261588199905
Common questions
What is Amber Ann Retzlaff, M.D.'s NPI number?
Amber Ann Retzlaff, M.D.'s National Provider Identifier (NPI) is 1679935860, issued on Mar 25, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Amber Ann Retzlaff, M.D. located?
The NPPES record lists a practice address at 800 E 28TH St Ste 401, Minneapolis, MN, 55407. Phone: (612) 863-0200. Providers update this record themselves, so call before visiting.
How can I verify Amber Ann Retzlaff, M.D.'s license?
NPPES lists Minnesota license number 71718, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Amber Ann Retzlaff, M.D. prescribe under Medicare Part D?
In 2024, Amber Ann Retzlaff, M.D. had 70 Medicare Part D claims for 28 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.