What is William Deihl's NPI number?

William Deihl's National Provider Identifier (NPI) is 1346123023, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Deihl's specialty?

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

Where is William Deihl located?

William Deihl's practice location on file with NPPES is 14045 N 7th St Ste 2, Phoenix, AZ 85022-4387.

What is William Deihl's phone number?

The practice phone number listed in the NPPES registry for William Deihl is (602) 314-1907.

Is William Deihl's NPI active?

Yes — William Deihl's NPI (1346123023) is active in the NPPES registry as of the last update on 2025-08-05.

IndividualActive

William Deihl, PHD

NPI 1346123023 · Mental Health Counselor · Phoenix, AZ

William Deihl, PHD is a Mental Health Counselor provider in Phoenix, AZ (NPI 1346123023).

Provider details

NPI number: 1346123023
Entity type: Individual
Primary specialty: Mental Health CounselorBehavioral Health & Social Service Providers
Credential: PHD
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Mental Health CounselorPrimary101YM0800X
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
Under 1 yr in 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

14045 N 7th St Ste 2

Phoenix, AZ 85022-4387

Phone: (602) 314-1907

Street-level locationGet directions

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Mailing address