Michael Shannon, M.D.
NPI 1538119607 · Nephrology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Shannon, M.D. is a Nephrology Physician provider in Seattle, WA (NPI 1538119607).
Provider details
- NPI number
- 1538119607
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD60654692 (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
20 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
278 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 52 | $130 |
| Hemodialysis Procedure With Physician Evaluation90935 | 50 | $77 |
| 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 | 44 | $18 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 40 | $86 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 39 | $106 |
| 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 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 90 | 24 |
| Amlodipine Besylate | 80 | 28 |
| Carvedilol | 63 | 20 |
| Torsemide | 62 | 20 |
| Lisinopril | 57 | 16 |
| Prednisone | 46 | 11 |
| Furosemide | 44 | — |
| Empagliflozin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-11
- Last updated
- 2022-07-21
Frequently asked questions
- What is Michael Shannon's NPI number?
- Michael Shannon's National Provider Identifier (NPI) is 1538119607, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Shannon's specialty?
- Michael Shannon is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Shannon located?
- Michael Shannon's practice location on file with NPPES is 325 9th Ave # 359606, Seattle, WA 98104-2420.
- What is Michael Shannon's phone number?
- The practice phone number listed in the NPPES registry for Michael Shannon is (206) 744-4933.
- Does Michael Shannon accept Medicare?
- Michael Shannon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Shannon's NPI active?
- Yes — Michael Shannon's NPI (1538119607) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.