John Simmerling, AMFT
NPI 1134056153 · Marriage & Family Therapist · Santa Monica, CA
John Simmerling, AMFT is a Marriage & Family Therapist provider in Santa Monica, CA (NPI 1134056153).
Provider details
- NPI number
- 1134056153
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- AMFT
- Sex
- Male
- Sole proprietor
- No
- License
- AMFT162957 (CA)
Specialties & taxonomies
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
Under 1 yr in 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
- 2026-05-05
- Last updated
- 2026-05-05
- Certified
- 2026-05-05
Frequently asked questions
- What is John Simmerling's NPI number?
- John Simmerling's National Provider Identifier (NPI) is 1134056153, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Simmerling's specialty?
- John Simmerling is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is John Simmerling located?
- John Simmerling's practice location on file with NPPES is 720 Wilshire Blvd Ste 204, Santa Monica, CA 90401-1737.
- What is John Simmerling's phone number?
- The practice phone number listed in the NPPES registry for John Simmerling is (323) 379-2147.
- Is John Simmerling's NPI active?
- Yes — John Simmerling's NPI (1134056153) is active in the NPPES registry as of the last update on 2026-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.