DR. KATHRYN MARY O'BRIEN PSY.D.
NPI 1083289938
Psychologist - Clinical in Annapolis, MD

Active since May 24, 2021Opted out of Medicare · through Jan 1, 2028
166 DEFENSE HWY, ANNAPOLIS, MD 21401(410) 684-3806 Get Directions Write a Review

NPPES record last updated: July 9, 2024. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 9, 2024, May 24, 2021 (2 updates tracked since 2021).

About Dr. Kathryn Mary O'brien Psy.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KATHRYN MARY O'BRIEN PSY.D. (NPI 1083289938) is an individual clinical provider in Annapolis, Maryland, licensed in Maryland (07080) and active in the NPI registry since May 2021. She has opted out of Medicare through January 1, 2028, maintains a secondary practice location in Annapolis, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1083289938
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameDR. KATHRYN MARY O'BRIENCredential: PSY.D.
Location Address166 DEFENSE HWYAnnapolis, MD 21401-8919
Mailing Address3400 Saratoga AveAnnapolis, MD 21403-4929 · (443) 994-7427
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateMay 24, 2021
Last NPPES UpdateJuly 9, 20242 updates tracked since enumeration
NPPES CertifiedJuly 9, 2024
NPI 1083289938 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License Licensed in MD · 07080
Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

166 DEFENSE HWY, Annapolis, MD 21401

Secondary Practice Location 1

Location 13400 Saratoga AveAnnapolis, MD 21403-4929 · Phone (443) 994-7427

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Opted out of Medicare

Dr. Kathryn Mary O'brien Psy.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2026 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2026
Opt-Out In Effect ThroughJanuary 1, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Psychologist
166 DEFENSE HWY
ANNAPOLIS, MD 21401
Family Medicine
166 DEFENSE HWY
ANNAPOLIS, MD 21401
Internal Medicine (Rheumatology)
166 DEFENSE HWY, SUITE 200
ANNAPOLIS, MD 21401
Phlebology
166 DEFENSE HWY, SUITE 101
ANNAPOLIS, MD 21401
Nurse Practitioner (Adult Health)
166 DEFENSE HWY
ANNAPOLIS, MD 21401
Specialist
166 DEFENSE HWY, SUITE 101
ANNAPOLIS, MD 21401

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kathryn O'brien's NPI number?

The NPI number for Kathryn O'brien is 1083289938. It was assigned to this individual provider in the NPPES registry on May 24, 2021.

Where is Kathryn O'brien located?

Kathryn O'brien practices at 166 Defense Hwy, Annapolis, MD 21401. The listed phone number is (410) 684-3806.

What is Kathryn O'brien's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Kathryn O'brien enrolled in Medicare?

No. Kathryn O'brien has opted out of Medicare through January 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Kathryn O'brien was last updated on July 9, 2024. NPI Profile syncs with the weekly NPPES data releases published by CMS.