IndividualActive
Greta Johnson, M.D.
NPI 1750741484 · Psychiatry Physician · Covina, CA
Greta Johnson, M.D. is a Psychiatry Physician provider in Covina, CA (NPI 1750741484).
Provider details
- NPI number
- 1750741484
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- G44755 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(72/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
800 S. Barranca
Covina, CA 91001
Phone: (626) 858-3154
Fax: (626) 858-8474
Street-level locationGet directions
Mailing address
2591 Fairoaks, #203
Altadena, CA 91001
Registry dates
- Enumerated
- 2016-02-23
- Last updated
- 2016-02-23
Frequently asked questions
- What is Greta Johnson's NPI number?
- Greta Johnson's National Provider Identifier (NPI) is 1750741484, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Greta Johnson's specialty?
- Greta Johnson is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Greta Johnson located?
- Greta Johnson's practice location on file with NPPES is 800 S. Barranca, Covina, CA 91001.
- What is Greta Johnson's phone number?
- The practice phone number listed in the NPPES registry for Greta Johnson is (626) 858-3154.
- Is Greta Johnson's NPI active?
- Yes — Greta Johnson's NPI (1750741484) is active in the NPPES registry as of the last update on 2016-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.