Marissa Mariano-Mejia, M.D.
NPI 1750426862 · Psychiatry Physician · Rialto, CA
Marissa Mariano-Mejia, M.D. is a Psychiatry Physician provider in Rialto, CA (NPI 1750426862).
Provider details
- NPI number
- 1750426862
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A56023 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
- 2007-02-20
- Last updated
- 2021-02-23
- Certified
- 2021-02-23
Frequently asked questions
- What is Marissa Mariano-Mejia's NPI number?
- Marissa Mariano-Mejia's National Provider Identifier (NPI) is 1750426862, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Mariano-Mejia's specialty?
- Marissa Mariano-Mejia is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Mariano-Mejia located?
- Marissa Mariano-Mejia's practice location on file with NPPES is 850 E Foothill Blvd, Rialto, CA 92376-5230.
- What is Marissa Mariano-Mejia's phone number?
- The practice phone number listed in the NPPES registry for Marissa Mariano-Mejia is (909) 421-9280.
- Is Marissa Mariano-Mejia's NPI active?
- Yes — Marissa Mariano-Mejia's NPI (1750426862) is active in the NPPES registry as of the last update on 2021-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.