John Largen and Associates, Inc.
NPI 1336133578 · Clinical Neuropsychologist · Houston, TX
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Largen and Associates, Inc. is a Clinical Neuropsychologist organization in Houston, TX (NPI 1336133578).
Provider details
- NPI number
- 1336133578
- Entity type
- Organization
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- John Largen, Owner(713) 799-2818
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-02
- Last updated
- 2007-08-28
Frequently asked questions
- What is John Largen and Associates, Inc.'s NPI number?
- John Largen and Associates, Inc.'s National Provider Identifier (NPI) is 1336133578, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John Largen and Associates, Inc.?
- John Largen and Associates, Inc. is classified in the NPPES registry as Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is John Largen and Associates, Inc. located?
- John Largen and Associates, Inc.'s practice location on file with NPPES is 1020 Holcombe Blvd, Houston, TX 77030-2210.
- What is John Largen and Associates, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for John Largen and Associates, Inc. is (713) 799-2818.
- Does John Largen and Associates, Inc. accept Medicare?
- John Largen and Associates, Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for John Largen and Associates, Inc.?
- The authorized official listed on John Largen and Associates, Inc.'s NPPES record is John Largen, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John Largen and Associates, Inc.'s NPI active?
- Yes — John Largen and Associates, Inc.'s NPI (1336133578) is active in the NPPES registry as of the last update on 2007-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.