Joanna Martinez, MA
NPI 1871435727 · Medical Physician Assistant · Northridge, CA
Joanna Martinez, MA is a Medical Physician Assistant provider in Northridge, CA (NPI 1871435727).
Provider details
- NPI number
- 1871435727
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MA
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
83% 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
- 2026-04-08
- Last updated
- 2026-04-08
- Certified
- 2026-04-08
Frequently asked questions
- What is Joanna Martinez's NPI number?
- Joanna Martinez's National Provider Identifier (NPI) is 1871435727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Martinez's specialty?
- Joanna Martinez is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joanna Martinez located?
- Joanna Martinez's practice location on file with NPPES is 8330 Reseda Blvd, Northridge, CA 91324-4619.
- What is Joanna Martinez's phone number?
- The practice phone number listed in the NPPES registry for Joanna Martinez is (818) 996-1051.
- Is Joanna Martinez's NPI active?
- Yes — Joanna Martinez's NPI (1871435727) is active in the NPPES registry as of the last update on 2026-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.