Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John E Markey, PSYD CADC

Q: What is the NPI number for John Markey?

The National Provider Identifier (NPI) for John Markey is 1437209459, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Psychologist in Doylestown, PA · enumerated 2007 · practices at John E Markey Psyd LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1437209459

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Registry record

Entity type Individual (Type 1)

Name Dr. John E Markey

Credential PSYD CADC

Sex Male

Practice address Doylestown, PA, 18901

Phone (215) 348-2757

Fax (215) 348-4125

Enumeration date Jan 11, 2007

Last updated in NPPES Feb 27, 2017

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 934 (DE) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PS016988 (PA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does John Markey practice?

The practice location on file with NPPES is in Doylestown, PA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for John Markey?

The National Provider Identifier (NPI) for John Markey is 1437209459, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Marc Rosenfeld Chiropractor · Doylestown, PA NPI 1376583468 John E Markey Psyd LLC Community/Behavioral Health Agency · Doylestown, PA NPI 1164895488

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-27.