What is Steven Sumner's NPI number?

Steven Sumner's National Provider Identifier (NPI) is 1598619694, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Steven Sumner's specialty?

Steven Sumner is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).

Where is Steven Sumner located?

Steven Sumner's practice location on file with NPPES is 1200 Concord Ave Ste 185, Concord, CA 94520-5006.

What is Steven Sumner's phone number?

The practice phone number listed in the NPPES registry for Steven Sumner is (510) 268-8120.

Is Steven Sumner's NPI active?

Yes — Steven Sumner's NPI (1598619694) is active in the NPPES registry as of the last update on 2026-02-25.

IndividualActive

Steven Sumner

NPI 1598619694 · Behavior Technician · Concord, CA

Steven Sumner is a Behavior Technician provider in Concord, CA (NPI 1598619694).

Provider details

NPI number: 1598619694
Entity type: Individual
Primary specialty: Behavior TechnicianBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Behavior TechnicianPrimary106S00000X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(47/100 index)

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

1200 Concord Ave Ste 185

Concord, CA 94520-5006

Phone: (510) 268-8120

Street-level locationGet directions

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Mailing address