What is John Clark's NPI number?

John Clark's National Provider Identifier (NPI) is 1437889391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Clark's specialty?

John Clark is listed in the NPPES registry with a primary specialty of Counseling Psychologist (Behavioral Health & Social Service Providers).

Where is John Clark located?

John Clark's practice location on file with NPPES is 340 Maple St Ste 400, Marlborough, MA 01752-3200.

What is John Clark's phone number?

The practice phone number listed in the NPPES registry for John Clark is (603) 425-4684.

Is John Clark's NPI active?

Yes — John Clark's NPI (1437889391) is active in the NPPES registry as of the last update on 2022-06-14.

IndividualActive

John Clark

NPI 1437889391 · Counseling Psychologist · Marlborough, MA

John Clark is a Counseling Psychologist provider in Marlborough, MA (NPI 1437889391).

Provider details

NPI number: 1437889391
Entity type: Individual
Primary specialty: Counseling PsychologistBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Counseling PsychologistPrimary103TC1900X
Behavioral Health & Social Service Providers

Profile Score

Established profile(54/100 index)

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

Registry tenure38% of score
4 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

340 Maple St Ste 400

Marlborough, MA 01752-3200

Phone: (603) 425-4684

Street-level locationGet directions

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Mailing address