What is Clayton Blackwell's NPI number?

Clayton Blackwell's National Provider Identifier (NPI) is 1386404812, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Clayton Blackwell's specialty?

Clayton Blackwell is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).

Where is Clayton Blackwell located?

Clayton Blackwell's practice location on file with NPPES is 3400 Spruce St, Philadelphia, PA 19104-4238.

What is Clayton Blackwell's phone number?

The practice phone number listed in the NPPES registry for Clayton Blackwell is (734) 755-7512.

Is Clayton Blackwell's NPI active?

Yes — Clayton Blackwell's NPI (1386404812) is active in the NPPES registry as of the last update on 2026-06-03.

IndividualActive

Clayton Blackwell

NPI 1386404812 · Dentist · Philadelphia, PA

Clayton Blackwell is a Dentist provider in Philadelphia, PA (NPI 1386404812).

Provider details

NPI number: 1386404812
Entity type: Individual
Primary specialty: DentistDental Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

DentistPrimary122300000XLicense DS044613 (PA)
Dental Providers
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Established profile(50/100 index)

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

Registry tenure38% of score
2 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

3400 Spruce St

Philadelphia, PA 19104-4238

Phone: (734) 755-7512

Street-level locationGet directions

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Mailing address