Crystal Simmons
NPI 1619176708 · Psychologist · Oakland, CA
Crystal Simmons is a Psychologist provider in Oakland, CA (NPI 1619176708).
Provider details
- NPI number
- 1619176708
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- School Psychologist103TS0200X
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
18 yrs in NPPES 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
- 2007-07-17
- Last updated
- 2022-10-03
- Certified
- 2022-08-28
Frequently asked questions
- What is Crystal Simmons's NPI number?
- Crystal Simmons's National Provider Identifier (NPI) is 1619176708, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Simmons's specialty?
- Crystal Simmons is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Crystal Simmons located?
- Crystal Simmons's practice location on file with NPPES is 2940 Summit St Ste 2d, Oakland, CA 94609-3416.
- What is Crystal Simmons's phone number?
- The practice phone number listed in the NPPES registry for Crystal Simmons is (510) 601-0203.
- Is Crystal Simmons's NPI active?
- Yes — Crystal Simmons's NPI (1619176708) is active in the NPPES registry as of the last update on 2022-10-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.