Thishara Merza, MD
NPI 1073773347 · Hospitalist Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thishara Merza, MD is a Hospitalist Physician provider in Saint Louis, MO (NPI 1073773347).
Provider details
- NPI number
- 1073773347
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2013032872 (MO)
Specialties & taxonomies
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
18 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
955 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 694 | $75 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 157 | $109 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 30 | $125 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 30 | $166 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 28 | $113 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 29 | — |
| Carvedilol | 20 | 12 |
| Losartan Potassium | 18 | 12 |
| Pantoprazole Sodium | 18 | 14 |
| Prednisone | 18 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 16 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-11
- Last updated
- 2021-02-11
- Certified
- 2021-02-11
Frequently asked questions
- What is Thishara Merza's NPI number?
- Thishara Merza's National Provider Identifier (NPI) is 1073773347, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thishara Merza's specialty?
- Thishara Merza is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Thishara Merza located?
- Thishara Merza's practice location on file with NPPES is 3015 N Ballas Rd, Saint Louis, MO 63131-2329.
- What is Thishara Merza's phone number?
- The practice phone number listed in the NPPES registry for Thishara Merza is (314) 996-5772.
- Does Thishara Merza accept Medicare?
- Thishara Merza is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thishara Merza's NPI active?
- Yes — Thishara Merza's NPI (1073773347) is active in the NPPES registry as of the last update on 2021-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.