Doctor profile · Federal record
Dr. Thejana Marasinghe, M.D.
General Practice Physician (CMS: Family Practice) · Seattle, WA
- NPI 1184777534
- Accepts Medicare
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
310 15Th Ave E
Seattle, WA 981125103
(206) 326-3000 - Additional location
-
12800 Bothell Everett Hwy
Everett, WA 982086642
(425) 316-5180
fax (425) 316-5181 - Mailing address
-
Po Box 34584
Seattle, WA 981241584
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- June 17, 2021
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 208D00000X — NUCC code
- State license (1)
- Washington #ML20008538
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1184777534. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
256
Distinct HCPCS
8
Medicare allowed
$29,206
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 118 | 72 | $126 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 40 | 36 | $87 | |
G0008 |
Administration of influenza virus vaccine | 21 | 21 | $30 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 18 | 18 | $76 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 16 | 16 | $281 | |
G0009 |
Administration of pneumococcal vaccine | 16 | 16 | $31 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 15 | 15 | $128 | |
G0438 |
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 12 | 12 | $164 |
In context: peer comparison
Among 2 peers in Seattle General Practice Physician, average services per provider: 56. This provider delivers 4.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,208
Patients
398
Total drug cost
$19,126
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 264 | 87 | $4,000 |
| Lisinopril | Generic | 128 | 42 | $1,148 |
| Levothyroxine Sodium | Generic | 118 | 35 | $1,943 |
| Amlodipine Besylate | Generic | 115 | 39 | $1,014 |
| Losartan Potassium | Generic | 90 | 27 | $885 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 79 | 22 | $1,610 |
| Hydrochlorothiazide | Generic | 65 | 21 | $218 |
| Tamsulosin Hcl | Generic | 56 | 17 | $1,523 |
| Omeprazole | Generic | 49 | 17 | $1,036 |
| Metoprolol Succinate | Generic | 44 | 21 | $1,068 |
Hospital affiliations
Frequently asked questions
What is Dr. Thejana Marasinghe's medical specialty?
Dr. Thejana Marasinghe practices General Practice Physician in Seattle, WA.
Where does Dr. Thejana Marasinghe practice?
Dr. Thejana Marasinghe practices at 310 15Th Ave E, Seattle, WA 981125103. Office phone: 2063263000.
What is Dr. Thejana Marasinghe's NPI?
Dr. Thejana Marasinghe's National Provider Identifier (NPI) is 1184777534, issued by NPPES.
Does Dr. Thejana Marasinghe accept Medicare assignment?
Yes. Dr. Thejana Marasinghe accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thejana Marasinghe commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Administration of influenza virus vaccine (HCPCS G0008). Source: CMS Medicare Physician & Other Practitioners file.