Charlie Knowlton, PHD
NPI 1972952414 · Clinical Psychologist · Portland, OR
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
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)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
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.
Practice location
Mailing address
Registry dates
- 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.