What is William Lang's NPI number?

William Lang's National Provider Identifier (NPI) is 1326445065, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Lang's specialty?

William Lang is listed in the NPPES registry with a primary specialty of Research Study Specialist (Other Service Providers).

Where is William Lang located?

William Lang's practice location on file with NPPES is 101 Cornelia Ave, Mill Valley, CA 94941-1807.

What is William Lang's phone number?

The practice phone number listed in the NPPES registry for William Lang is (415) 755-8841.

Is William Lang's NPI active?

Yes — William Lang's NPI (1326445065) is active in the NPPES registry as of the last update on 2014-11-24.

IndividualActive

William Lang, M.D.

NPI 1326445065 · Research Study Specialist · Mill Valley, CA

William Lang, M.D. is a Research Study Specialist provider in Mill Valley, CA (NPI 1326445065).

Provider details

NPI number: 1326445065
Entity type: Individual
Primary specialty: Research Study SpecialistOther Service Providers
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: G037379 (CA)

Specialties & taxonomies

Research Study SpecialistPrimary1744R1102XLicense G037379 (CA)
Other Service Providers

Profile Score

Detailed profile(75/100 index)

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

Registry tenure38% of score
11 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

101 Cornelia Ave

Mill Valley, CA 94941-1807

Phone: (415) 755-8841

Street-level locationGet directions

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Mailing address