What is Charlie Knowlton's NPI number?

Charlie Knowlton's National Provider Identifier (NPI) is 1972952414, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Charlie Knowlton's specialty?

Charlie Knowlton is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).

Where is Charlie Knowlton located?

Charlie Knowlton's practice location on file with NPPES is 12360 E Burnside St, Portland, OR 97233-1042.

What is Charlie Knowlton's phone number?

The practice phone number listed in the NPPES registry for Charlie Knowlton is (971) 279-4800.

Does Charlie Knowlton accept Medicare?

Charlie Knowlton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Charlie Knowlton's NPI active?

Yes — Charlie Knowlton's NPI (1972952414) is active in the NPPES registry as of the last update on 2021-09-27.

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Charlie Knowlton, PHD

NPI 1972952414 · Clinical Psychologist · Portland, OR

Charlie Knowlton, PHD is a Clinical Psychologist provider in Portland, OR (NPI 1972952414).

Provider details

NPI number: 1972952414
Entity type: Individual
Primary specialty: Clinical PsychologistBehavioral Health & Social Service Providers
Credential: PHD
Sex: Female
Sole proprietor: No
License: 3385 (OR)

Practice location

12360 E Burnside St

Portland, OR 97233-1042

Phone: (971) 279-4800

Fax: (971) 279-2051

Street-level locationGet directions

More OR providers

Mailing address

1776 Sw Madison St

Portland, OR 97205-1715

Specialties & taxonomies

Clinical PsychologistPrimary103TC0700XLicense 3385 (OR)
Behavioral Health & Social Service Providers
Psychologist103T00000XLicense 3385 (OR)
Behavioral Health & Social Service Providers
Counseling Psychologist103TC1900XLicense 3385 (OR)
Behavioral Health & Social Service Providers

Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(72/100 index)

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

Registry tenure38% of score
10 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.

Enumerated: 2016-06-06
Last updated: 2021-09-27
Certified: 2021-09-27

Frequently asked questions

What is Charlie Knowlton's NPI number?: Charlie Knowlton's National Provider Identifier (NPI) is 1972952414, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Charlie Knowlton's specialty?: Charlie Knowlton is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
Where is Charlie Knowlton located?: Charlie Knowlton's practice location on file with NPPES is 12360 E Burnside St, Portland, OR 97233-1042.
What is Charlie Knowlton's phone number?: The practice phone number listed in the NPPES registry for Charlie Knowlton is (971) 279-4800.
Does Charlie Knowlton accept Medicare?: Charlie Knowlton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Charlie Knowlton's NPI active?: Yes — Charlie Knowlton's NPI (1972952414) is active in the NPPES registry as of the last update on 2021-09-27.

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

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions