Fionnuala Cormack, MD
NPI 1477656858 · Nephrology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fionnuala Cormack, MD is a Nephrology Physician provider in Seattle, WA (NPI 1477656858).
Provider details
- NPI number
- 1477656858
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00042866 (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
210 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 | 44 | $106 |
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older)90961 | 42 | $324 |
| 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 | 38 | $18 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 27 | $158 |
| Dialysis Services, 1 Physician Visit Per Month (20 Years Or Older)90962 | 23 | $225 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Chlorthalidone | 114 | 42 |
| Potassium Citratebrand: Potassium Citrate Er | 85 | 32 |
| Amlodipine Besylate | 68 | 19 |
| Carvedilol | 51 | 13 |
| Amiloride Hcl | 48 | 14 |
| Olmesartan Medoxomil | 43 | 14 |
| Potassium Chloride | 41 | 13 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-07
- Last updated
- 2010-07-29
Frequently asked questions
- What is Fionnuala Cormack's NPI number?
- Fionnuala Cormack's National Provider Identifier (NPI) is 1477656858, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fionnuala Cormack's specialty?
- Fionnuala Cormack is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Fionnuala Cormack located?
- Fionnuala Cormack's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
- What is Fionnuala Cormack's phone number?
- The practice phone number listed in the NPPES registry for Fionnuala Cormack is (206) 744-8998.
- Does Fionnuala Cormack accept Medicare?
- Fionnuala Cormack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fionnuala Cormack's NPI active?
- Yes — Fionnuala Cormack's NPI (1477656858) is active in the NPPES registry as of the last update on 2010-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.