Anna T. Kostrzewsky, MD
Psychiatry Physician · Baltimore, MD
Anna T. Kostrzewsky, MD is a psychiatry physician with a practice address in Baltimore, Maryland, and NPI 1629536511, issued on Mar 9, 2019. Check the license (Maryland D0098828, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Anna T. Kostrzewsky
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- D0098828 MD
56123 KY
Self-reported in NPPES; status is on the state search - Practice location
- 6501 N Charles St, Baltimore, MD 21204
- Phone
- (410) 938-3000
- Enumerated
- Mar 9, 2019
- Record last updated
- Nov 8, 2023
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,451 in Maryland → Look up another NPI →
Also registered at 6501 N Charles St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Anna T. Kostrzewsky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0098828Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average psychiatry physician in 2024
226 Medicare Part D claims for 48 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Trazodone Hcl15 claims
- Benztropine Mesylate11 claims
- Clozapine11 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.
Anna T. Kostrzewsky among 1,451 psychiatry physician records in Maryland
Anna T. Kostrzewsky, 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 2019, is newer than 89% of them.
- NPI issued2019 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · 36% of these records are
- Record last updated2023 · 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).
497 psychiatry physician records list a practice address in Baltimore
They are 497 of the 35,183 NPPES records with a practice address in Baltimore, and 1,451 psychiatry physician records in Maryland.
All 1,451 in Maryland → Every provider in Baltimore → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- David Arnold, M.D.Baltimore, MD 212041700852084
- Maurice Bachawati, M.D.Baltimore, MD 212041366425779
- Nicola Cascella, M.DBaltimore, MD 212041427007681
- Coquilla Cross, MDTowson, MD 212041235197013
- Andrew Feinberg, M.D.Towson, MD 212041962432062
- Laura Gaffney, M.D.Towson, MD 212041215973441
- Oscar Galvis, M.D.Towson, MD 212041275517567
- David KaufmanTowson, MD 212041013956358
Common questions
What is Anna T. Kostrzewsky, MD's NPI number?
Anna T. Kostrzewsky, MD's National Provider Identifier (NPI) is 1629536511, issued on Mar 9, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Anna T. Kostrzewsky, MD located?
The NPPES record lists a practice address at 6501 N Charles St, Baltimore, MD, 21204. Phone: (410) 938-3000. Providers update this record themselves, so call before visiting.
How can I verify Anna T. Kostrzewsky, MD's license?
NPPES lists Maryland license number D0098828, 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 Anna T. Kostrzewsky, MD prescribe under Medicare Part D?
In 2024, Anna T. Kostrzewsky, MD had 226 Medicare Part D claims for 48 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.