Maria Holtrop, PSYD
NPI 1316170004 · Clinical Psychologist · Lancaster, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Holtrop, PSYD is a Clinical Psychologist provider in Lancaster, CA (NPI 1316170004).
Provider details
- NPI number
- 1316170004
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Female
- Sole proprietor
- Yes
- License
- PSY 22962 (CA)
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
16 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
- 2009-08-27
- Last updated
- 2009-08-27
Frequently asked questions
- What is Maria Holtrop's NPI number?
- Maria Holtrop's National Provider Identifier (NPI) is 1316170004, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Holtrop's specialty?
- Maria Holtrop is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Maria Holtrop located?
- Maria Holtrop's practice location on file with NPPES is 1672 W Avenue J Ste 207, Lancaster, CA 93534-2861.
- What is Maria Holtrop's phone number?
- The practice phone number listed in the NPPES registry for Maria Holtrop is (661) 225-7166.
- Does Maria Holtrop accept Medicare?
- Maria Holtrop is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Holtrop's NPI active?
- Yes — Maria Holtrop's NPI (1316170004) is active in the NPPES registry as of the last update on 2009-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.