What is Charlotte Larson's NPI number?

Charlotte Larson's National Provider Identifier (NPI) is 1891383238, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Charlotte Larson's specialty?

Charlotte Larson is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).

Where is Charlotte Larson located?

Charlotte Larson's practice location on file with NPPES is 1959 Ne Pacific St Main Hospital, Seattle, WA 98195-3011.

What is Charlotte Larson's phone number?

The practice phone number listed in the NPPES registry for Charlotte Larson is (206) 598-3300.

Does Charlotte Larson accept Medicare?

Charlotte Larson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Charlotte Larson's NPI active?

Yes — Charlotte Larson's NPI (1891383238) is active in the NPPES registry as of the last update on 2025-07-21.

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Charlotte Larson

NPI 1891383238 · Gastroenterology Physician · Seattle, WA

Charlotte Larson is a Gastroenterology Physician provider in Seattle, WA (NPI 1891383238).

Provider details

NPI number: 1891383238
Entity type: Individual
Primary specialty: Gastroenterology PhysicianAllopathic & Osteopathic Physicians
Sex: Female
Sole proprietor: No
License: MD.MD.61679252 (WA)

Practice location

1959 Ne Pacific St Main Hospital

Seattle, WA 98195-3011

Phone: (206) 598-3300

Street-level locationGet directions

More WA providers

Mailing address

1959 Ne Pacific St Main Hospital

Seattle, WA 98195-0001

Specialties & taxonomies

Gastroenterology PhysicianPrimary207RG0100XLicense MD.MD.61679252 (WA)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Order and Referring Only - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(64/100 index)

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

Registry tenure38% of score
5 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.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.

Drug	Part D claims (2024)
Atorvastatin Calcium	21
Lisinopril	21

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2020-12-31
Last updated: 2025-07-21
Certified: 2025-07-21

Frequently asked questions

What is Charlotte Larson's NPI number?: Charlotte Larson's National Provider Identifier (NPI) is 1891383238, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Charlotte Larson's specialty?: Charlotte Larson is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
Where is Charlotte Larson located?: Charlotte Larson's practice location on file with NPPES is 1959 Ne Pacific St Main Hospital, Seattle, WA 98195-3011.
What is Charlotte Larson's phone number?: The practice phone number listed in the NPPES registry for Charlotte Larson is (206) 598-3300.
Does Charlotte Larson accept Medicare?: Charlotte Larson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Charlotte Larson's NPI active?: Yes — Charlotte Larson's NPI (1891383238) is active in the NPPES registry as of the last update on 2025-07-21.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Frequently asked questions