What is Grant Demuth's NPI number?

Grant Demuth's National Provider Identifier (NPI) is 1619838919, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Grant Demuth's specialty?

Grant Demuth is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).

Where is Grant Demuth located?

Grant Demuth's practice location on file with NPPES is 1823 Sunset Pl Ste C, Longmont, CO 80501-6544.

What is Grant Demuth's phone number?

The practice phone number listed in the NPPES registry for Grant Demuth is (720) 449-6676.

Is Grant Demuth's NPI active?

Yes — Grant Demuth's NPI (1619838919) is active in the NPPES registry as of the last update on 2025-11-18.

IndividualActive

Grant Demuth

NPI 1619838919 · Behavior Analyst · Longmont, CO

Grant Demuth is a Behavior Analyst provider in Longmont, CO (NPI 1619838919).

Provider details

NPI number: 1619838919
Entity type: Individual
Primary specialty: Behavior AnalystBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Behavior AnalystPrimary103K00000X
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

1823 Sunset Pl Ste C

Longmont, CO 80501-6544

Phone: (720) 449-6676

Street-level locationGet directions

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Mailing address