What is William Clark's NPI number?

William Clark's National Provider Identifier (NPI) is 1598838799, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Clark's specialty?

William Clark is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is William Clark located?

William Clark's practice location on file with NPPES is 2121 N Beverly Ave Ste 101, Tucson, AZ 85712-2154.

What is William Clark's phone number?

The practice phone number listed in the NPPES registry for William Clark is (520) 323-7026.

Is William Clark's NPI active?

Yes — William Clark's NPI (1598838799) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

William Clark

NPI 1598838799 · Internal Medicine Physician · Tucson, AZ

William Clark is a Internal Medicine Physician provider in Tucson, AZ (NPI 1598838799).

Provider details

NPI number: 1598838799
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Sex: Male
Sole proprietor: No
License: 7474 (AZ)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 7474 (AZ)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 index)

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

Registry tenure38% of score
19 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

2121 N Beverly Ave Ste 101

Tucson, AZ 85712-2154

Phone: (520) 323-7026

Fax: (520) 323-0301

Street-level locationGet directions

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Mailing address