Mary-Elizabeth Percival, M.D.
NPI 1225278955 · Hematology (Internal Medicine) Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Hematology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary-Elizabeth Percival, M.D. is a Hematology (Internal Medicine) Physician provider in Seattle, WA (NPI 1225278955).
Provider details
- NPI number
- 1225278955
- Entity type
- Individual
- Primary specialty
- Hematology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A106581 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
253 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 77 | $158 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 74 | $130 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 44 | $86 |
| 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 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 20 | $198 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-02-20
- Last updated
- 2015-10-29
Frequently asked questions
- What is Mary-Elizabeth Percival's NPI number?
- Mary-Elizabeth Percival's National Provider Identifier (NPI) is 1225278955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary-Elizabeth Percival's specialty?
- Mary-Elizabeth Percival is listed in the NPPES registry with a primary specialty of Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Mary-Elizabeth Percival located?
- Mary-Elizabeth Percival's practice location on file with NPPES is 825 Eastlake Ave E, Seattle, WA 98109.
- What is Mary-Elizabeth Percival's phone number?
- The practice phone number listed in the NPPES registry for Mary-Elizabeth Percival is (206) 598-6190.
- Does Mary-Elizabeth Percival accept Medicare?
- Mary-Elizabeth Percival is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary-Elizabeth Percival's NPI active?
- Yes — Mary-Elizabeth Percival's NPI (1225278955) is active in the NPPES registry as of the last update on 2015-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.