What is Charles Landis's NPI number?

Charles Landis's National Provider Identifier (NPI) is 1659512895, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Charles Landis's specialty?

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

Where is Charles Landis located?

Charles Landis's practice location on file with NPPES is 125 16th Ave E, Seattle, WA 98112-5211.

What is Charles Landis's phone number?

The practice phone number listed in the NPPES registry for Charles Landis is (206) 326-3000.

Does Charles Landis accept Medicare?

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

Is Charles Landis's NPI active?

Yes — Charles Landis's NPI (1659512895) is active in the NPPES registry as of the last update on 2022-12-08.

IndividualActiveAccepts Medicare

Charles Landis, MD

NPI 1659512895 · Gastroenterology Physician · Seattle, WA

Charles Landis, MD is a Gastroenterology Physician provider in Seattle, WA (NPI 1659512895).

Provider details

NPI number: 1659512895
Entity type: Individual
Primary specialty: Gastroenterology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: 60082609 (WA)

Practice location

125 16th Ave E

Seattle, WA 98112-5211

Phone: (206) 326-3000

Fax: (877) 515-2975

Street-level locationGet directions

More WA providers

Mailing address

5743 29th Ave Ne

Seattle, WA 98105-5521

Specialties & taxonomies

Gastroenterology PhysicianPrimary207RG0100XLicense 60082609 (WA)
Allopathic & Osteopathic Physicians
Gastroenterology Physician207RG0100XLicense 237642 (NY)
Allopathic & Osteopathic Physicians

Additional practice locations (1)

University of Washington Medical Center
1959 Ne Pacific Division of Hepatology
Seattle, WA 98195-2401
Phone: (206) 598-4908

Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(91/100 index)

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

Registry tenure38% of score
17 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
2 documented practice locations

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 · 6 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C	31	28
Ursodiol	25	—
Omeprazole	21	—
Lactulose	21	—
Hydroxyzine Hcl	11	—
Azathioprine	11	—

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: 2009-03-18
Last updated: 2022-12-08
Certified: 2022-12-08

Frequently asked questions

What is Charles Landis's NPI number?: Charles Landis's National Provider Identifier (NPI) is 1659512895, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Charles Landis's specialty?: Charles Landis is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
Where is Charles Landis located?: Charles Landis's practice location on file with NPPES is 125 16th Ave E, Seattle, WA 98112-5211.
What is Charles Landis's phone number?: The practice phone number listed in the NPPES registry for Charles Landis is (206) 326-3000.
Does Charles Landis accept Medicare?: Charles Landis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Charles Landis's NPI active?: Yes — Charles Landis's NPI (1659512895) is active in the NPPES registry as of the last update on 2022-12-08.

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

Additional practice locations (1)

Profile Score

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider prescribes (Medicare Part D)

Frequently asked questions