What is William Larsen's NPI number?

William Larsen's National Provider Identifier (NPI) is 1245168392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Larsen's specialty?

William Larsen is listed in the NPPES registry with a primary specialty of Cardiology Pharmacist (Pharmacy Service Providers).

Where is William Larsen located?

William Larsen's practice location on file with NPPES is 2301 Erwin Rd, Durham, NC 27705-4699.

What is William Larsen's phone number?

The practice phone number listed in the NPPES registry for William Larsen is (919) 684-8111.

Is William Larsen's NPI active?

Yes — William Larsen's NPI (1245168392) is active in the NPPES registry as of the last update on 2026-05-11.

IndividualActive

William Larsen, PHARMD

NPI 1245168392 · Cardiology Pharmacist · Durham, NC

William Larsen, PHARMD is a Cardiology Pharmacist provider in Durham, NC (NPI 1245168392).

Provider details

NPI number: 1245168392
Entity type: Individual
Primary specialty: Cardiology PharmacistPharmacy Service Providers
Credential: PHARMD
Sex: Male
Sole proprietor: No
License: 32202 (NC)

Specialties & taxonomies

Cardiology PharmacistPrimary1835C0206XLicense 32202 (NC)
Pharmacy Service Providers

Profile Score

Established profile(53/100 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
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

2301 Erwin Rd

Durham, NC 27705-4699

Phone: (919) 684-8111

Street-level locationGet directions

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Mailing address