What is William Marsh's NPI number?

William Marsh's National Provider Identifier (NPI) is 1447756234, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Marsh's specialty?

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

Where is William Marsh located?

William Marsh's practice location on file with NPPES is 300 W Clarendon Ave Ste 470, Phoenix, AZ 85013-3475.

What is William Marsh's phone number?

The practice phone number listed in the NPPES registry for William Marsh is (602) 730-4450.

Is William Marsh's NPI active?

Yes — William Marsh's NPI (1447756234) is active in the NPPES registry as of the last update on 2018-04-02.

IndividualActive

William Marsh

NPI 1447756234 · Psychologist · Phoenix, AZ

William Marsh is a Psychologist provider in Phoenix, AZ (NPI 1447756234).

Provider details

NPI number: 1447756234
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: Yes
License: 4759 (AZ)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 4759 (AZ)
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
8 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

300 W Clarendon Ave Ste 470

Phoenix, AZ 85013-3475

Phone: (602) 730-4450

Street-level locationGet directions

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Mailing address