Marvin Jack Feldman, MD
Hematology & Oncology Physician · Baltimore, MD
Marvin Jack Feldman, MD is a hematology & oncology physician with a practice address in Baltimore, Maryland, and NPI 1336254424, issued on Aug 20, 2006. Check the license (Maryland D07930, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Marvin Jack Feldman
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- D07930 MD
Self-reported in NPPES; status is on the state search - Practice location
- 227 St Paul Place, Baltimore, MD 21202
- Phone
- (410) 783-5858
- Enumerated
- Aug 20, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (410) 783-5864
- Medicaid ID
- 308341100 MD
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 317 in Maryland → Look up another NPI →
Also registered at 227 St Paul Place
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Panayotis Ledakis, MDHematology & Oncology Physician1649385634
- David Riseberg, MDMedical Oncology Physician1124133210
- Ashlee Vargason, MGC, CGCGenetic Counselor (M.S.)1710680129
Verify Marvin Jack Feldman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D07930Check 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
30 Medicare Part D claims, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
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.
Marvin Jack Feldman among 317 hematology & oncology physician records in Maryland
Marvin Jack Feldman, MD is one of 317 hematology & oncology physician records with a practice address in Maryland. 75% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 58% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2007 · 57% 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 Maryland 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 Maryland
There are 317 hematology & oncology physician records in Maryland.
All 317 in Maryland → Every provider in Baltimore → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Panayotis Ledakis, MDBaltimore, MD 212021649385634
- Vu Duong, MDBaltimore, MD 212011356563530
- Ariel Fromowitz, MDBaltimore, MD 212011043748577
- Michael Green, MDBaltimore, MD 212011316172240
- Michael Hubbard, DOBaltimore, MD 212011588283048
- Amy Kimball, MD, PHDBaltimore, MD 212011508908245
- Hira Latif, MDBaltimore, MD 212011134548191
- Jennie Law, MDBaltimore, MD 212011225296692
Common questions
What is Marvin Jack Feldman, MD's NPI number?
Marvin Jack Feldman, MD's National Provider Identifier (NPI) is 1336254424, issued on Aug 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marvin Jack Feldman, MD located?
The NPPES record lists a practice address at 227 St Paul Place, Baltimore, MD, 21202. Phone: (410) 783-5858. Providers update this record themselves, so call before visiting.
How can I verify Marvin Jack Feldman, MD's license?
NPPES lists Maryland license number D07930, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marvin Jack Feldman, MD prescribe under Medicare Part D?
In 2024, Marvin Jack Feldman, MD had 30 Medicare Part D claims; 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.