What is Karen Larsen's NPI number?

Karen Larsen's National Provider Identifier (NPI) is 1538099437, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Karen Larsen's specialty?

Karen Larsen is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).

Where is Karen Larsen located?

Karen Larsen's practice location on file with NPPES is 2544 S 300 E, South Salt Lake, UT 84115-3241.

What is Karen Larsen's phone number?

The practice phone number listed in the NPPES registry for Karen Larsen is (801) 793-3512.

Is Karen Larsen's NPI active?

Yes — Karen Larsen's NPI (1538099437) is active in the NPPES registry as of the last update on 2026-05-21.

IndividualActive

Karen Larsen

NPI 1538099437 · Medical Oncology Physician · South Salt Lake, UT

Karen Larsen is a Medical Oncology Physician provider in South Salt Lake, UT (NPI 1538099437).

Provider details

NPI number: 1538099437
Entity type: Individual
Primary specialty: Medical Oncology PhysicianAllopathic & Osteopathic Physicians
Sex: Female
Sole proprietor: No
License: 6031374-3102 (UT)

Specialties & taxonomies

Medical Oncology PhysicianPrimary207RX0202XLicense 6031374-3102 (UT)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(52/100 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

2544 S 300 E

South Salt Lake, UT 84115-3241

Phone: (801) 793-3512

Street-level locationGet directions

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Mailing address