NPPES file of Aug 9, 2026

David Kowarski, M.D.

Specialist · Clinton, MD

David Kowarski, M.D. is a specialist with a practice address in Clinton, Maryland, and NPI 1073556080, issued on Jun 14, 2006. Check the license (Maryland D41839, as entered in NPPES) with the Maryland board that licenses this profession; 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
1073556080
Name
David Kowarski
Credential
M.D.
Primary taxonomy
Specialist 174400000X
License numbers
D41839 MD
0101239821 VA
Self-reported in NPPES; status is on the state search
Practice location
8926 Woodyard RD, Clinton, MD 20735
Phone
(301) 856-3670
Enumerated
Jun 14, 2006
Record last updated
Nov 29, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(301) 868-0129
Medicare enrollment
Enrolled (PECOS I20250430002661); may accept Medicare assignment
Medical or professional school
Perelman School Of Med At The University Of Pennsylvania, 1986
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 8926 Woodyard RD

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

  1. Rommaan Ahmad, DOPhysical Medicine & Rehabilitation Physician1558439133
  2. Rita Bass, M.D.Diagnostic Radiology Physician1700866316
  3. Luke Blankenheim, PA-CPhysician Assistant1174829774
  4. Kathleen Butler, M.D.Specialist1013997634
  5. Diana CarreraStudent in an Organized Health Care Education/Training Program1003358201
  6. Nicholas Demonaco, M.D.Hematology & Oncology Physician1871535245

Verify David Kowarski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this profession
    Search for license D41839
    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
Find the Maryland license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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99% fewer Medicare Part D claims than the average specialist in 2024

12 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.

  1. David Kowarski12
  2. Specialty average1,380

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. Spectrum Imaging SCChicago, IL

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

David Kowarski among 938 specialist records in Maryland

David Kowarski, M.D. is one of 938 specialist records with a practice address in Maryland. 36% 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 17% of them.

  • NPI issued2006 · 17% of these records are older, 39% newer
  • In a Medicare fileYes · 36% of these records are
  • In the CMS Doctors and Clinicians fileYes · 23% of these records are
  • Graduated1986 · median 1989 among the 220 with a school on file
  • Record last updated2007 · 72% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

15 specialist records list a practice address in Clinton

They are 15 of the 832 NPPES records with a practice address in Clinton, and 938 specialist records in Maryland.

The 8 specialist records with the nearest ZIP codes

  1. Nelson Benjers, M.D.Clinton, MD 207351629069968
  2. Kathleen Butler, M.D.Clinton, MD 207351013997634
  3. Robert Frankel, M.D.Clinton, MD 207351437139250
  4. Jorge Garciala, M.D.Clinton, MD 207351023098878
  5. George Gilbert, M.D., PH.D.Clinton, MD 207351184604787
  6. Verne Kemerer, M.D.Clinton, MD 207351598745358
  7. Philip Man, M.D.Clinton, MD 207351730169590
  8. Eva Moore, SENIOR COSMETOLGISTClinton, MD 207351992148142

Common questions

What is David Kowarski, M.D.'s NPI number?

David Kowarski, M.D.'s National Provider Identifier (NPI) is 1073556080, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is David Kowarski, M.D. located?

The NPPES record lists a practice address at 8926 Woodyard RD, Clinton, MD, 20735. Phone: (301) 856-3670. Providers update this record themselves, so call before visiting.

How can I verify David Kowarski, M.D.'s license?

NPPES lists Maryland license number D41839, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

How much does David Kowarski, M.D. prescribe under Medicare Part D?

In 2024, David Kowarski, M.D. had 12 Medicare Part D claims; the average among specialist prescribers was 1,380. 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.