What is Chelsea Rybak's NPI number?

Chelsea Rybak's National Provider Identifier (NPI) is 1396397055, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Chelsea Rybak's specialty?

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

Where is Chelsea Rybak located?

Chelsea Rybak's practice location on file with NPPES is 345a Greenwood St, Worcester, MA 01607-1753.

What is Chelsea Rybak's phone number?

The practice phone number listed in the NPPES registry for Chelsea Rybak is (508) 363-0200.

Is Chelsea Rybak's NPI active?

Yes — Chelsea Rybak's NPI (1396397055) is active in the NPPES registry as of the last update on 2026-04-16.

IndividualActive

Chelsea Rybak

NPI 1396397055 · Behavior Analyst · Worcester, MA

Chelsea Rybak is a Behavior Analyst provider in Worcester, MA (NPI 1396397055).

Provider details

NPI number: 1396397055
Entity type: Individual
Primary specialty: Behavior AnalystBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Behavior AnalystPrimary103K00000X
Behavioral Health & Social Service Providers

Profile Score

Established profile(59/100 index)

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

Registry tenure38% of score
6 yrs 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

345a Greenwood St

Worcester, MA 01607-1753

Phone: (508) 363-0200

Street-level locationGet directions

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Mailing address