Nathan Simmons, PSY.D.
NPI 1447313846 · Psychologist · San Marcos, CA
Nathan Simmons, PSY.D. is a Psychologist provider in San Marcos, CA (NPI 1447313846).
Provider details
- NPI number
- 1447313846
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- No
- License
- PSY25856 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
- 2006-12-18
- Last updated
- 2019-04-17
Frequently asked questions
- What is Nathan Simmons's NPI number?
- Nathan Simmons's National Provider Identifier (NPI) is 1447313846, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Simmons's specialty?
- Nathan Simmons is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Nathan Simmons located?
- Nathan Simmons's practice location on file with NPPES is 277 Rancheros Dr, San Marcos, CA 92069-2976.
- What is Nathan Simmons's phone number?
- The practice phone number listed in the NPPES registry for Nathan Simmons is (619) 528-4600.
- Is Nathan Simmons's NPI active?
- Yes — Nathan Simmons's NPI (1447313846) is active in the NPPES registry as of the last update on 2019-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.