Gimha Gunawardana, M.D
NPI 1720274921 · Internal Medicine Physician · Pomona, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gimha Gunawardana, M.D is a Internal Medicine Physician provider in Pomona, CA (NPI 1720274921).
Provider details
- NPI number
- 1720274921
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Female
- Sole proprietor
- Yes
- License
- A101531 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,785 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 50 Minutes99233 | 1,472 | $118 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,448 | $79 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 284 | $81 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 211 | $136 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 163 | $131 |
| Critical Care, First 30-74 Minutes99291 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 92 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 212 | 51 |
| Atorvastatin Calcium | 200 | 60 |
| Pantoprazole Sodium | 113 | 53 |
| Tamsulosin Hcl | 109 | 26 |
| Amlodipine Besylate | 92 | 29 |
| Losartan Potassium | 86 | 28 |
| Furosemide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$29 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-09-20
- Last updated
- 2015-10-16
Frequently asked questions
- What is Gimha Gunawardana's NPI number?
- Gimha Gunawardana's National Provider Identifier (NPI) is 1720274921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gimha Gunawardana's specialty?
- Gimha Gunawardana is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gimha Gunawardana located?
- Gimha Gunawardana's practice location on file with NPPES is 255 E Bonita Ave, Pomona, CA 91767-1923.
- What is Gimha Gunawardana's phone number?
- The practice phone number listed in the NPPES registry for Gimha Gunawardana is (909) 924-1940.
- Does Gimha Gunawardana accept Medicare?
- Gimha Gunawardana is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gimha Gunawardana's NPI active?
- Yes — Gimha Gunawardana's NPI (1720274921) is active in the NPPES registry as of the last update on 2015-10-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.