Mark A. Klein, MD
Hematology & Oncology Physician · Minneapolis, MN
Mark A. Klein, MD is a hematology & oncology physician with a practice address in Minneapolis, Minnesota, and NPI 1508844234, issued on Jan 4, 2006. Check the license (Minnesota 44348, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Mark A. Klein
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 44348 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1 Veterans Dr, Minneapolis, MN 55417
- Phone
- (612) 725-2000
- Enumerated
- Jan 4, 2006
- Record last updated
- May 2, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (612) 725-2149
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 274 in Minnesota → Look up another NPI →
Also registered at 1 Veterans Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily A BauerRegistered Nurse1467325563
- Heather AadlandRegistered Nurse1750220786
- Akshar Abbott, M.D.Ophthalmology Physician1730459231
- Nathan AbebeRegistered Nurse1396697074
- Mekdes AboyeRegistered Nurse1760334387
- Meheretab Abraha, PHARMDPharmacist1083063952
Verify Mark A. Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 44348Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
28 Medicare Part D claims for 12 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Jantoven13 claims
- Warfarin Sodium12 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.
Mark A. Klein among 274 hematology & oncology physician records in Minnesota
Mark A. Klein, MD is one of 274 hematology & oncology physician records with a practice address in Minnesota. 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 6% of them.
- NPI issued2006 · 6% of these records are older, 62% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 76% of these records are
- Record last updated2008 · 47% 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 Minnesota 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 Minnesota
There are 274 hematology & oncology physician records in Minnesota.
All 274 in Minnesota → Every provider in Minneapolis → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Pankaj Gupta, M.D.Minneapolis, MN 554171912927559
- Robert Perri, MDMinneapolis, MN 554171427078195
- Anna Schorer, MDMinneapolis, MN 554171164449989
- Heidi StricklandMinneapolis, MN 554171881547941
- Waseem Touma, MDMinneapolis, MN 554171508018904
- Martin Lee, M.D.St Louis Park, MN 554161134104458
- Mark MengeSt Louis Park, MN 554161760469928
- Gary Shapiro, M.D.Minneapolis, MN 554161558392175
Common questions
What is Mark A. Klein, MD's NPI number?
Mark A. Klein, MD's National Provider Identifier (NPI) is 1508844234, issued on Jan 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Klein, MD located?
The NPPES record lists a practice address at 1 Veterans Dr, Minneapolis, MN, 55417. Phone: (612) 725-2000. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Klein, MD's license?
NPPES lists Minnesota license number 44348, 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 Mark A. Klein, MD prescribe under Medicare Part D?
In 2024, Mark A. Klein, MD had 28 Medicare Part D claims for 12 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.