NPPES file of Aug 9, 2026

Kathryn Mary O'Brien, PSY.D.

Clinical Psychologist · Annapolis, MD

Kathryn Mary O'Brien, PSY.D. is a clinical psychologist with a practice address in Annapolis, Maryland, and NPI 1083289938, issued on May 24, 2021. Check the license (Maryland 07080, as entered in NPPES) with the Maryland board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1083289938
Name
Kathryn Mary O'Brien
Credential
PSY.D.
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
07080 MD
Self-reported in NPPES; status is on the state search
Practice location
166 Defense Hwy, Annapolis, MD 21401
Phone
(410) 684-3806
Enumerated
May 24, 2021
Record last updated
Jul 9, 2024
Medicare enrollment
Enrolled (PECOS I20240911001438); may accept Medicare assignment
Telehealth
Offers telehealth (CMS)
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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8 nearest clinical psychologist records → All 1,499 in Maryland → Look up another NPI →

Also registered at 166 Defense Hwy

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

  1. Mariam Ameri, MDRheumatology Physician1588807861
  2. Linda NisanovaPsychologist1063239903
  3. Kelly O'Donnell, MDPhlebology Physician1619997772
  4. Suzanne Zimmermann, CRNPAdult Health Nurse Practitioner1710249511

Verify Kathryn Mary O'Brien 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 07080    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
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Kathryn Mary O'Brien among 1,499 clinical psychologist records in Maryland

Kathryn Mary O'Brien, PSY.D. is one of 1,499 clinical psychologist records with a practice address in Maryland. 10% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2021, is newer than 84% of them.

  • NPI issued2021 · 84% of these records are older, 12% newer
  • In a Medicare fileNo · 10% of these records are
  • In the CMS Doctors and Clinicians fileYes · 18% of these records are
  • Graduated2021 · median 2003 among the 265 with a school on file
  • Record last updated2024 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

46 clinical psychologist records list a practice address in Annapolis

They are 46 of the 3,629 NPPES records with a practice address in Annapolis, and 1,499 clinical psychologist records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,499 in Maryland → Every provider in Annapolis → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Margery Calhoun, PHDAnnapolis, MD 214011922168137
  2. Deborah Gambles, PSY.D.Annapolis, MD 214011891013835
  3. Mark Hedlund, PHDAnnapolis, MD 214011366596280
  4. Patricia Held, PHDAnnapolis, MD 214011164461588
  5. Lisa Hill, PSY.D.Annapolis, MD 214011366779027
  6. Leo Hruska, PH.D.Annapolis, MD 214011154488302
  7. Teresa Hunt, PHDAnnapolis, MD 214011609836105
  8. Brian Konik, PHDAnnapolis, MD 214011306165139

Common questions

What is Kathryn Mary O'Brien, PSY.D.'s NPI number?

Kathryn Mary O'Brien, PSY.D.'s National Provider Identifier (NPI) is 1083289938, issued on May 24, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Kathryn Mary O'Brien, PSY.D. located?

The NPPES record lists a practice address at 166 Defense Hwy, Annapolis, MD, 21401. Phone: (410) 684-3806. Providers update this record themselves, so call before visiting.

How can I verify Kathryn Mary O'Brien, PSY.D.'s license?

NPPES lists Maryland license number 07080, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.