Alisse Ryan, MD
NPI 1558459255 · Internal Medicine Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alisse Ryan, MD is a Internal Medicine Physician provider in Seattle, WA (NPI 1558459255).
Provider details
- NPI number
- 1558459255
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00040027 (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
1,242 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 | 366 | $102 |
| 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 | 203 | $17 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 191 | $142 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 114 | $152 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 99 | $141 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 104 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 429 | 122 |
| Amlodipine Besylate | 218 | 64 |
| Levothyroxine Sodium | 171 | 44 |
| Losartan Potassium | 156 | 49 |
| Alendronate Sodium | 122 | 34 |
| Rosuvastatin Calcium | 107 | 35 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2015-03-23
Frequently asked questions
- What is Alisse Ryan's NPI number?
- Alisse Ryan's National Provider Identifier (NPI) is 1558459255, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alisse Ryan's specialty?
- Alisse Ryan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alisse Ryan located?
- Alisse Ryan's practice location on file with NPPES is 1100 9th Ave, Seattle, WA 98101-2756.
- What is Alisse Ryan's phone number?
- The practice phone number listed in the NPPES registry for Alisse Ryan is (206) 223-6600.
- Does Alisse Ryan accept Medicare?
- Alisse Ryan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alisse Ryan's NPI active?
- Yes — Alisse Ryan's NPI (1558459255) is active in the NPPES registry as of the last update on 2015-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.