Thejana Marasinghe, M.D.
NPI 1184777534 · General Practice Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thejana Marasinghe, M.D. is a General Practice Physician provider in Seattle, WA (NPI 1184777534).
Provider details
- NPI number
- 1184777534
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- ML20008538 (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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
308 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 | 148 | $128 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 64 | $88 |
| 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 | 39 | $16 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 28 | $129 |
| Administration of Influenza Virus VaccineG0008 | 18 | $32 |
| Admn Sarscov2 Vacc 1 Dose |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 80 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 291 | 91 |
| Levothyroxine Sodium | 130 | 44 |
| Lisinopril | 121 | 41 |
| Amlodipine Besylate | 115 | 37 |
| Losartan Potassium | 106 | 38 |
| Metformin Hclbrand: Metformin Hcl Er | 102 | 30 |
Practice location
Mailing address
Additional practice locations (1)
- 12800 Bothell Everett HwyEverett, WA 98208-6642Phone: (425) 316-5180Fax: (425) 316-5181
Registry dates
- Enumerated
- 2007-01-19
- Last updated
- 2021-06-17
- Certified
- 2021-06-17
Frequently asked questions
- What is Thejana Marasinghe's NPI number?
- Thejana Marasinghe's National Provider Identifier (NPI) is 1184777534, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thejana Marasinghe's specialty?
- Thejana Marasinghe is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Thejana Marasinghe located?
- Thejana Marasinghe's practice location on file with NPPES is 310 15th Ave E, Seattle, WA 98112-5103.
- What is Thejana Marasinghe's phone number?
- The practice phone number listed in the NPPES registry for Thejana Marasinghe is (206) 326-3000.
- Does Thejana Marasinghe accept Medicare?
- Thejana Marasinghe is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thejana Marasinghe's NPI active?
- Yes — Thejana Marasinghe's NPI (1184777534) is active in the NPPES registry as of the last update on 2021-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.