NPPES file of Aug 9, 2026

Paul Sackstein

Hematology & Oncology Physician · Upper Marlboro, MD

Paul Sackstein is a hematology & oncology physician with a practice address in Upper Marlboro, Maryland, and NPI 1639639792, issued on Mar 23, 2019. Check the license (Maryland D0103377, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639639792
Name
Paul Sackstein
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
D0103377 MD
Self-reported in NPPES; status is on the state search
Practice location
1221 Mercantile LN, Upper Marlboro, MD 20774
Phone
(301) 618-5500
Enumerated
Mar 23, 2019
Record last updated
Jun 12, 2025
Medicare enrollment
Enrolled (PECOS I20250904000125); accepts Medicare assignment
Medical or professional school
University Of Connecticut School Of Medicine, 2019
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1221 Mercantile LN

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Isabella Ahanogbe, M.D.Family Medicine Physician1821381849
  2. Folabomi Ajanaku, M.D.Gastroenterology Physician1851719777
  3. Jacqueline Arthur-Baidoo, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1235810276
  4. David Auh, MDFamily Medicine Physician1356752588
  5. Olufemi Balogun, MDFamily Medicine Physician1194010678
  6. Folasade Bangali, DPTPhysical Therapist1811394091

Verify Paul Sackstein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D0103377
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Maryland license search

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96% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

37 Medicare Part D claims for 24 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.

  1. Paul Sackstein37
  2. Specialty average877

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

  1. Kaiser Foundation Health Plan OF The Mid Atlantic States, IncLargo, MD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Paul Sackstein among 317 hematology & oncology physician records in Maryland

Paul Sackstein 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 2019, is newer than 93% of them.

  • NPI issued2019 · 93% of these records are older, 5% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2019 · median 2000 among the 185 with a school on file
  • Record last updated2025 · 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.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Bogdan Dumitriu, MDUpper Marlboro, MD 207741386819753
  2. Monica PeravaliUpper Marlboro, MD 207741629464904
  3. Elizabeth Pfaffenroth, M.D.Largo, MD 207741548426927
  4. Nitin Verma, MDLargo, MD 207741649351859
  5. Sajeev Anand, M.D.Greenbelt, MD 207701194816017
  6. Thomas Bensinger, M.D.Greenbelt, MD 207701962405985
  7. Ari Fishman, M.D.Greenbelt, MD 207701407963036
  8. Modupe Obadina, M.D.Greenbelt, MD 207701649253485

Common questions

What is Paul Sackstein's NPI number?

Paul Sackstein's National Provider Identifier (NPI) is 1639639792, issued on Mar 23, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Paul Sackstein located?

The NPPES record lists a practice address at 1221 Mercantile LN, Upper Marlboro, MD, 20774. Phone: (301) 618-5500. Providers update this record themselves, so call before visiting.

How can I verify Paul Sackstein's license?

NPPES lists Maryland license number D0103377, 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 Paul Sackstein prescribe under Medicare Part D?

In 2024, Paul Sackstein had 37 Medicare Part D claims for 24 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.