Steven Larson, M.D.
NPI 1801974076 · Gastroenterology Physician · Tacoma, WA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Larson, M.D. is a Gastroenterology Physician provider in Tacoma, WA (NPI 1801974076).
Provider details
- NPI number
- 1801974076
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 42882-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
625 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 111 | $243 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 107 | $57 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 77 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 72 | $127 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 59 | $163 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 160 | 58 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 99 | 95 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 96 | 92 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 86 | 84 |
| Pantoprazole Sodium | 62 | 21 |
| Dicyclomine Hcl | 55 | — |
| Famotidine/Pf |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$117 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-02
- Last updated
- 2017-01-06
Frequently asked questions
- What is Steven Larson's NPI number?
- Steven Larson's National Provider Identifier (NPI) is 1801974076, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Larson's specialty?
- Steven Larson is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Larson located?
- Steven Larson's practice location on file with NPPES is 1112 6th Ave, Tacoma, WA 98405-4040.
- What is Steven Larson's phone number?
- The practice phone number listed in the NPPES registry for Steven Larson is (253) 272-8664.
- Does Steven Larson accept Medicare?
- Steven Larson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Larson's NPI active?
- Yes — Steven Larson's NPI (1801974076) is active in the NPPES registry as of the last update on 2017-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.