Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. John W Largen Jr., PHD

Individual provider Clinical Neuropsychologist · NPI 1265425466

Dr. John W Largen Jr., PHD is a Clinical Psychologist in Houston, Texas. Qualified in 1980, 46 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
46
Licensed in
TX
In the registry since
2005
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1020 Holcombe Blvd Ste 1304
Houston, TX 77030-2210
Phone: (713) 799-2818
Fax: (713) 790-1454
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Neuropsychologist (primary) Taxonomy 103G00000X · Licence 22321 (TX)

Record details

NPI number1265425466
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedAugust 24, 2005
Last updated in NPPESAugust 28, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1980 (46 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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