Bruce Bonsack, MD
NPI 1225113566 · Internal Medicine Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bruce Bonsack, MD is a Internal Medicine Physician provider in Seattle, WA (NPI 1225113566).
Provider details
- NPI number
- 1225113566
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD00035570 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
770 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 250 | $140 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 141 | $143 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 114 | $17 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 97 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 68 | $98 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 88 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 491 | 145 |
| Lisinopril | 303 | 89 |
| Amlodipine Besylate | 296 | 90 |
| Levothyroxine Sodium | 217 | 66 |
| Losartan Potassium | 217 | 61 |
| Apixabanbrand: Eliquis | 136 | 31 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-26
- Last updated
- 2009-02-06
Frequently asked questions
- What is Bruce Bonsack's NPI number?
- Bruce Bonsack's National Provider Identifier (NPI) is 1225113566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bruce Bonsack's specialty?
- Bruce Bonsack is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Bruce Bonsack located?
- Bruce Bonsack's practice location on file with NPPES is 3400 California Ave Sw, Seattle, WA 98116-3307.
- What is Bruce Bonsack's phone number?
- The practice phone number listed in the NPPES registry for Bruce Bonsack is (206) 320-3399.
- Does Bruce Bonsack accept Medicare?
- Bruce Bonsack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bruce Bonsack's NPI active?
- Yes — Bruce Bonsack's NPI (1225113566) is active in the NPPES registry as of the last update on 2009-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.