Thilina Marasinghe, MD
NPI 1821160938 · Internal Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thilina Marasinghe, MD is a Internal Medicine Physician provider in San Antonio, TX (NPI 1821160938).
Provider details
- NPI number
- 1821160938
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- M4871 (TX)
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
602 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 175 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 140 | $123 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 122 | $111 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 46 | $75 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 33 | $87 |
| Assessment of Emotional Or Behavioral Problems96127 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 141 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 610 | 218 |
| Levothyroxine Sodium | 441 | 154 |
| Lisinopril | 410 | 145 |
| Amlodipine Besylate | 382 | 151 |
| Rosuvastatin Calcium | 318 | 117 |
| Losartan Potassium | 315 | 124 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-14
- Last updated
- 2016-10-17
Frequently asked questions
- What is Thilina Marasinghe's NPI number?
- Thilina Marasinghe's National Provider Identifier (NPI) is 1821160938, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thilina Marasinghe's specialty?
- Thilina Marasinghe is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thilina Marasinghe located?
- Thilina Marasinghe's practice location on file with NPPES is 2455 Ne Loop 410, San Antonio, TX 78217-5649.
- What is Thilina Marasinghe's phone number?
- The practice phone number listed in the NPPES registry for Thilina Marasinghe is (210) 599-6000.
- Does Thilina Marasinghe accept Medicare?
- Thilina Marasinghe is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thilina Marasinghe's NPI active?
- Yes — Thilina Marasinghe's NPI (1821160938) is active in the NPPES registry as of the last update on 2016-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.