NPPES file of Aug 9, 2026

James Cooper, MD

Psychiatry Physician · Kensington, MD

James Cooper, MD is a psychiatry physician with a practice address in Kensington, Maryland, and NPI 1639279144, issued on Sep 24, 2006. Check the license (Maryland D28646, 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
1639279144
Name
James Cooper
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
D28646 MD
Self-reported in NPPES; status is on the state search
Practice location
3948 Washington St, Kensington, MD 20895
Phone
(301) 933-4323
Enumerated
Sep 24, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify James Cooper in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D28646
    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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79% fewer Medicare Part D claims than the average psychiatry physician in 2024

213 Medicare Part D claims for 21 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.

  1. James Cooper213
  2. Specialty average1,000

Most prescribed

  1. Escitalopram Oxalate22 claims
  2. Mirtazapine20 claims
  3. Bupropion Hcl19 claims
  4. Vilazodone Hcl16 claims
  5. Alprazolam15 claims
  6. Bupropion Xl13 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.

James Cooper among 1,451 psychiatry physician records in Maryland

James Cooper, MD is one of 1,451 psychiatry physician records with a practice address in Maryland. 63% 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, 59% newer
  • In a Medicare fileYes · 63% of these records are
  • In the CMS Doctors and Clinicians fileNo · 36% of these records are
  • Record last updated2007 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

12 psychiatry physician records list a practice address in Kensington

They are 12 of the 686 NPPES records with a practice address in Kensington, and 1,451 psychiatry physician records in Maryland.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Robert Blum, M.D.Kensington, MD 208951528283207
  2. David Greenblum, MDKensington, MD 208951467462713
  3. Karl Hawver, M.D.Kensington, MD 208951437152758
  4. Henry Holcomb, M.D.Kensington, MD 208951225110075
  5. Michael Horan, MDKensington, MD 208951215098728
  6. Balbinder Kaur, MDKensington, MD 208951659439578
  7. Lisa McCurry, M.D.Kensington, MD 208951679639173
  8. Barbara Rosenbaum, MDKansington, MD 208951720146624

Common questions

What is James Cooper, MD's NPI number?

James Cooper, MD's National Provider Identifier (NPI) is 1639279144, issued on Sep 24, 2006. An NPI identifies a provider in billing; it is not a license.

Where is James Cooper, MD located?

The NPPES record lists a practice address at 3948 Washington St, Kensington, MD, 20895. Phone: (301) 933-4323. Providers update this record themselves, so call before visiting.

How can I verify James Cooper, MD's license?

NPPES lists Maryland license number D28646, 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 James Cooper, MD prescribe under Medicare Part D?

In 2024, James Cooper, MD had 213 Medicare Part D claims for 21 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.