What is Ethan Stiffelman's NPI number?

Ethan Stiffelman's National Provider Identifier (NPI) is 1639967383, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Ethan Stiffelman's specialty?

Ethan Stiffelman is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).

Where is Ethan Stiffelman located?

Ethan Stiffelman's practice location on file with NPPES is 17555 Ventura Blvd, Encino, CA 91316-3890.

What is Ethan Stiffelman's phone number?

The practice phone number listed in the NPPES registry for Ethan Stiffelman is (818) 305-1952.

Is Ethan Stiffelman's NPI active?

Yes — Ethan Stiffelman's NPI (1639967383) is active in the NPPES registry as of the last update on 2025-08-13.

IndividualActive

Ethan Stiffelman

NPI 1639967383 · Specialist · Encino, CA

Ethan Stiffelman is a Specialist provider in Encino, CA (NPI 1639967383).

Provider details

NPI number: 1639967383
Entity type: Individual
Primary specialty: SpecialistOther Service Providers
Sole proprietor: Yes

Specialties & taxonomies

SpecialistPrimary174400000XLicense 25-QMHS-I-00137 (CA)
Other Service Providers
Case Manager/Care Coordinator171M00000X
Other Service Providers

Profile Score

Basic profile(48/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
1 yr 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

17555 Ventura Blvd

Encino, CA 91316-3890

Phone: (818) 305-1952

Street-level locationGet directions

More CA providers

Mailing address