What is Anne Tietjen's NPI number?

Anne Tietjen's National Provider Identifier (NPI) is 1821121195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Anne Tietjen's specialty?

Anne Tietjen is listed in the NPPES registry with a primary specialty of Cognitive & Behavioral Psychologist (Behavioral Health & Social Service Providers).

Where is Anne Tietjen located?

Anne Tietjen's practice location on file with NPPES is 1201 11th St, Bellingham, WA 98225-7093.

What is Anne Tietjen's phone number?

The practice phone number listed in the NPPES registry for Anne Tietjen is (360) 647-2808.

Is Anne Tietjen's NPI active?

Yes — Anne Tietjen's NPI (1821121195) is active in the NPPES registry as of the last update on 2025-09-11.

IndividualActive

Anne Tietjen, PH.D.

NPI 1821121195 · Cognitive & Behavioral Psychologist · Bellingham, WA

Anne Tietjen, PH.D. is a Cognitive & Behavioral Psychologist provider in Bellingham, WA (NPI 1821121195).

Provider details

NPI number: 1821121195
Entity type: Individual
Primary specialty: Cognitive & Behavioral PsychologistBehavioral Health & Social Service Providers
Credential: PH.D.
Sex: Female
Sole proprietor: Yes
License: PY00001272 (WA)

Specialties & taxonomies

Cognitive & Behavioral PsychologistPrimary103TB0200XLicense PY00001272 (WA)
Behavioral Health & Social Service Providers
Adult Development & Aging Psychologist103TA0700XLicense PY00001272 (WA)
Behavioral Health & Social Service Providers
Clinical Psychologist103TC0700XLicense PY00001272 (WA)
Behavioral Health & Social Service Providers
Clinical Child & Adolescent Psychologist103TC2200XLicense PY00001272 (WA)
Behavioral Health & Social Service Providers
Intellectual & Developmental Disabilities Psychologist103TM1800XLicense PY00001272 (WA)
Behavioral Health & Social Service Providers
Psychologist

Profile Score

Detailed profile(89/100 index)

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

Registry tenure38% of score
19 yrs in NPPES 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

1201 11th St

Suite 201

Bellingham, WA 98225-7093

Phone: (360) 647-2808

Fax: (360) 752-0037

Street-level locationGet directions

More WA providers

Mailing address

708 Fieldston Rd

Bellingham, WA 98225-8704

Enumerated: 2007-03-14
Last updated: 2025-09-11

Frequently asked questions

What is Anne Tietjen's NPI number?: Anne Tietjen's National Provider Identifier (NPI) is 1821121195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Anne Tietjen's specialty?: Anne Tietjen is listed in the NPPES registry with a primary specialty of Cognitive & Behavioral Psychologist (Behavioral Health & Social Service Providers).
Where is Anne Tietjen located?: Anne Tietjen's practice location on file with NPPES is 1201 11th St, Bellingham, WA 98225-7093.
What is Anne Tietjen's phone number?: The practice phone number listed in the NPPES registry for Anne Tietjen is (360) 647-2808.
Is Anne Tietjen's NPI active?: Yes — Anne Tietjen's NPI (1821121195) is active in the NPPES registry as of the last update on 2025-09-11.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.