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Mark Duell, MSW
NPI 1720479017 · Mental Health Counselor · Portland, OR
Mark Duell, MSW is a Mental Health Counselor provider in Portland, OR (NPI 1720479017).
Provider details
- NPI number
- 1720479017
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MSW
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(68/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
847 Ne 19th Ave
Suite 100
Portland, OR 97232-2684
Phone: (503) 238-0769
Street-level locationGet directions
Mailing address
Po Box 8459
Portland, OR 97207-8459
Registry dates
- Enumerated
- 2015-02-09
- Last updated
- 2015-02-09
Frequently asked questions
- What is Mark Duell's NPI number?
- Mark Duell's National Provider Identifier (NPI) is 1720479017, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Duell's specialty?
- Mark Duell is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Duell located?
- Mark Duell's practice location on file with NPPES is 847 Ne 19th Ave, Portland, OR 97232-2684.
- What is Mark Duell's phone number?
- The practice phone number listed in the NPPES registry for Mark Duell is (503) 238-0769.
- Is Mark Duell's NPI active?
- Yes — Mark Duell's NPI (1720479017) is active in the NPPES registry as of the last update on 2015-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.