What is Mark Nelson's NPI number?

Mark Nelson's National Provider Identifier (NPI) is 1447145644, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Nelson's specialty?

Mark Nelson is listed in the NPPES registry with a primary specialty of School Counselor (Behavioral Health & Social Service Providers).

Where is Mark Nelson located?

Mark Nelson's practice location on file with NPPES is 301 W Washington Blvd, Crescent City, CA 95531-8340.

What is Mark Nelson's phone number?

The practice phone number listed in the NPPES registry for Mark Nelson is (707) 464-6141.

Is Mark Nelson's NPI active?

Yes — Mark Nelson's NPI (1447145644) is active in the NPPES registry as of the last update on 2025-06-10.

IndividualActive

Mark Nelson

NPI 1447145644 · School Counselor · Crescent City, CA

Mark Nelson is a School Counselor provider in Crescent City, CA (NPI 1447145644).

Provider details

NPI number: 1447145644
Entity type: Individual
Primary specialty: School CounselorBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

School CounselorPrimary101YS0200X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(48/100 index)

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

Registry tenure38% of score
1 yr 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

301 W Washington Blvd

Crescent City, CA 95531-8340

Phone: (707) 464-6141

Street-level locationGet directions

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Mailing address