Martha Masson, PHD
NPI 1952417289 · Clinical Psychologist · Rancho Cucamonga, CA
Martha Masson, PHD is a Clinical Psychologist provider in Rancho Cucamonga, CA (NPI 1952417289).
Provider details
- NPI number
- 1952417289
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- Yes
- License
- PSY13675 (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
19 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
- 2006-08-21
- Last updated
- 2009-09-01
Frequently asked questions
- What is Martha Masson's NPI number?
- Martha Masson's National Provider Identifier (NPI) is 1952417289, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Martha Masson's specialty?
- Martha Masson is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Martha Masson located?
- Martha Masson's practice location on file with NPPES is 9330 Base Line Road, Rancho Cucamonga, CA 91701-5827.
- What is Martha Masson's phone number?
- The practice phone number listed in the NPPES registry for Martha Masson is (909) 652-0100.
- Is Martha Masson's NPI active?
- Yes — Martha Masson's NPI (1952417289) is active in the NPPES registry as of the last update on 2009-09-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.