DR. GLENN PHILLIP HORWITZ (PH.D.) – Clinical Psychologist, NPI 1437335734

Clinical Psychologist

DR. GLENN PHILLIP HORWITZ (PH.D.) is a healthcare provider. based in Purcellville, Virginia. specializing in Clinical Psychologist. They hold the professional credentials PH.D.. They hold a License No. 0810003784 (VA). The NPI Number for DR. GLENN PHILLIP HORWITZ (PH.D.) is 1437335734

Main info

Male

Sole Proprietor

Name

DR. GLENN PHILLIP HORWITZ (PH.D.)

NPI

1437335734

Phone

(571) 438-2992

Address

18235 Foundry Rd

Enumeration Date

16 January 2008

Last Update Date

6 February 2019

Data current as of

20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology

Experience60

Completeness75

Years active:18State licenses:1Digital endpointsOther names

Provider Addresses for DR. GLENN PHILLIP HORWITZ (PH.D.)

18235 Foundry Rd
Purcellville, VA 201324077
Phone: (571) 438-2992
Type: Location
9518C Lee Hwy
Fairfax, VA 22031
Phone: (571) 438-2992
Type: Location
9518C LEE HWY
FAIRFAX, VA 220312303
Phone: (571) 438-2992
Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

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Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 20132)

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Reviews

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Frequently asked questions

What NPI should I save for DR. GLENN PHILLIP HORWITZ (PH.D.)?

Save NPI 1437335734 if you need a stable reference for DR. GLENN PHILLIP HORWITZ (PH.D.).

Is DR. GLENN PHILLIP HORWITZ (PH.D.)'s NPI currently valid?

The extract we use shows DR. GLENN PHILLIP HORWITZ (PH.D.) as active.

Can you summarize DR. GLENN PHILLIP HORWITZ (PH.D.)'s specialty in plain language?

Clinically, the directory lists DR. GLENN PHILLIP HORWITZ (PH.D.) with Clinical Psychologist. Clinical services aligned with this taxonomy classification.

What location shows for DR. GLENN PHILLIP HORWITZ (PH.D.)?

We surface Purcellville, Virginia for DR. GLENN PHILLIP HORWITZ (PH.D.) based on available NPPES addresses.

How can I contact DR. GLENN PHILLIP HORWITZ (PH.D.)?

Phone or fax may appear on the official NPI record when supplied — verify before relying on them.