John W. Largen, PHD
Clinical Neuropsychologist · Houston, TX
John W. Largen, PHD is a clinical neuropsychologist with a practice address in Houston, Texas, and NPI 1265425466, issued on Aug 24, 2005. Check the license (Texas 22321, as entered in NPPES) with the Texas board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John W. Largen
- Credential
- PHD
- Primary taxonomy
- Clinical Neuropsychologist 103G00000X
- License number
- 22321 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1020 Holcombe Blvd, Houston, TX 77030
- Phone
- (713) 799-2818
- Enumerated
- Aug 24, 2005
- Record last updated
- Aug 28, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (713) 790-1454
- Medicare enrollment
- Enrolled (PECOS I20100811000282); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical neuropsychologist records → All 388 in Texas → Look up another NPI →
Also registered at 1020 Holcombe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Souradeep BhattacharyaStudent in an Organized Health Care Education/Training Program1518808567
- Rajashekher Bolla, PTPhysical Therapist1265764864
- Elizabeth Fowler, EDDClinical Psychologist1932253325
- Rohan GuptaStudent in an Organized Health Care Education/Training Program1245199017
- Christine LannonStudent in an Organized Health Care Education/Training Program1336906254
- Zachary MendozaStudent in an Organized Health Care Education/Training Program1336940048
Verify John W. Largen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 22321Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John W. Largen among 388 clinical neuropsychologist records in Texas
John W. Largen, PHD is one of 388 clinical neuropsychologist records with a practice address in Texas. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 97% newer
- In a Medicare fileNo · 31% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated1980 · median 2011 among the 154 with a school on file
- Record last updated2007 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103G00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Neuropsychologist providers in Texas
There are 388 clinical neuropsychologist records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 388 in Texas → Every provider in Houston → Clinical Neuropsychologist nationwide →
The 8 clinical neuropsychologist records with the nearest ZIP codes
- Joshua Breier, PH.D.Houston, TX 770301437177219
- Andrea Cohen, PH.D.Houston, TX 770301316958598
- Linda Ewing-Cobbs, PH.D.Houston, TX 770301487680021
- Robert Harper, PHDHouston, TX 770301841370103
- Katherine Loveland, PH.D.Houston, TX 770301982622106
- Matthew Nance, PH.D.Houston, TX 770301104867860
- Nicholas Pastorek, PH.D.Houston, TX 770301942398672
- Deborah Pearson, PH.D.Houston, TX 770301316965544
Common questions
What is John W. Largen, PHD's NPI number?
John W. Largen, PHD's National Provider Identifier (NPI) is 1265425466, issued on Aug 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John W. Largen, PHD located?
The NPPES record lists a practice address at 1020 Holcombe Blvd, Houston, TX, 77030. Phone: (713) 799-2818. Providers update this record themselves, so call before visiting.
How can I verify John W. Largen, PHD's license?
NPPES lists Texas license number 22321, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.