Maria Tretiakova
NPI 1427341791 · Clinical Pathology/Laboratory Medicine Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Tretiakova is a Clinical Pathology/Laboratory Medicine Physician provider in Seattle, WA (NPI 1427341791).
Provider details
- NPI number
- 1427341791
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- MD60292757 (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
15 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
639 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 152 | $40 |
| Surgical Pathology Consultation and Report on Referred Slides Prepared Elsewhere88321 | 146 | $90 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 118 | $87 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 83 | $30 |
| Surgical Pathology, Gross and Microscopic Examinations, for Prostate Needle Biopsy, Any MethodG0416 | 64 | $140 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 47 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-19
- Last updated
- 2013-01-07
Frequently asked questions
- What is Maria Tretiakova's NPI number?
- Maria Tretiakova's National Provider Identifier (NPI) is 1427341791, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Tretiakova's specialty?
- Maria Tretiakova is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Tretiakova located?
- Maria Tretiakova's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
- What is Maria Tretiakova's phone number?
- The practice phone number listed in the NPPES registry for Maria Tretiakova is (206) 744-3145.
- Does Maria Tretiakova accept Medicare?
- Maria Tretiakova is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Tretiakova's NPI active?
- Yes — Maria Tretiakova's NPI (1427341791) is active in the NPPES registry as of the last update on 2013-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.