1. Home
  2. Directory
  3. Maryland
  4. Chevy Chase
  5. Psychologist
  6. NPI Profile

DR. GILLIAN BROOKE KARP PHD
NPI 1447535166
Psychologist - Clinical in Chevy Chase, MD

Active since October 13, 2011Opted out of Medicare · through Jul 6, 2027
6821 DELAWARE ST, CHEVY CHASE, MD 20815(240) 802-6525 Get Directions Write a Review

NPPES record last updated: October 29, 2018. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Gillian Brooke Karp Phd NPPES

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

DR. GILLIAN BROOKE KARP PHD (NPI 1447535166) is an individual clinical provider in Chevy Chase, Maryland, licensed in Maryland (04775) and active in the NPI registry since October 2011. She has opted out of Medicare through July 6, 2027 and remains eligible to order and refer and maintains a secondary practice location in San Antonio.

NPPES Registry Identity

NPI1447535166
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameDR. GILLIAN BROOKE KARPCredential: PHD
Location Address6821 DELAWARE STChevy Chase, MD 20815
Mailing Address6821 Delaware StChevy Chase, MD 20815-4165 · (240) 802-6525
Phone(240) 802-6525
Sole ProprietorNo
Enumeration DateOctober 13, 2011
Last NPPES UpdateOctober 29, 2018
✔ NPI 1447535166 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 · 04775
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.
6821 DELAWARE ST, Chevy Chase, MD 20815
Open in Google Maps ↗

Secondary Practice Location 1

Location 16655 First Park Ten Blvd, Ste 222San Antonio, TX 78213-4308 · Phone (210) 496-2323 · Fax (888) 496-3340

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. Gillian Brooke Karp Phd 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 July 6, 2019 through July 6, 2027.

Opt-Out Effective DateJuly 6, 2019
Opt-Out In Effect ThroughJuly 6, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20815 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Gillian Karp's NPI number?

The NPI number for Gillian Karp is 1447535166. It was assigned to this individual provider in the NPPES registry on October 13, 2011.

Where is Gillian Karp located?

Gillian Karp practices at 6821 Delaware St, Chevy Chase, MD 20815. The listed phone number is (240) 802-6525.

What is Gillian Karp's specialty?

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

Is Gillian Karp enrolled in Medicare?

No. Gillian Karp has opted out of Medicare through July 6, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Gillian Karp was last updated on October 29, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.