Kosala Samarasinghe, M.D.
Internal Medicine Physician · San Diego, CA
Kosala Samarasinghe, M.D. is an internal medicine physician with a practice address in San Diego, California, and NPI 1386626034, issued on Nov 17, 2005. Check the license (California A80809, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kosala Samarasinghe
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A80809 CA
Self-reported in NPPES; status is on the state search - Practice location
- 501 Washington St, San Diego, CA 92103
- Phone
- (619) 278-3340
- Enumerated
- Nov 17, 2005
- Record last updated
- Jan 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (619) 278-3335
- Medicaid ID
- 00A808090 CA
- Medicare enrollment
- Enrolled (PECOS I20040805001686); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 501 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kosala Samarasinghe in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A80809Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% more Medicare Part D claims than the average internal medicine physician in 2024
3,362 Medicare Part D claims for 361 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 17 claims were for opioids.
Most prescribed
- Atorvastatin Calcium226 claims
- Levothyroxine Sodium199 claims
- Rosuvastatin Calcium138 claims
- Amlodipine Besylate124 claims
- Lisinopril114 claims
- Losartan Potassium101 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $255.69
11 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Scripps HealthSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kosala Samarasinghe among 17,696 internal medicine physician records in California
Kosala Samarasinghe, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1998 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
961 internal medicine physician records list a practice address in San Diego
They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Diego → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Eric Dahms, M.D.San Diego, CA 921031306808464
- Janette Gray, M.D.San Diego, CA 921031295721876
- San Hsieh, MDSan Diego, CA 921031851388847
- Arthur Kingsbury, M.D.San Diego, CA 921031144216284
- Timothy O'Neill, M.D.San Diego, CA 921031831172295
Common questions
What is Kosala Samarasinghe, M.D.'s NPI number?
Kosala Samarasinghe, M.D.'s National Provider Identifier (NPI) is 1386626034, issued on Nov 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Kosala Samarasinghe, M.D. located?
The NPPES record lists a practice address at 501 Washington St, San Diego, CA, 92103. Phone: (619) 278-3340. Providers update this record themselves, so call before visiting.
How can I verify Kosala Samarasinghe, M.D.'s license?
NPPES lists California license number A80809, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kosala Samarasinghe, M.D. prescribe under Medicare Part D?
In 2024, Kosala Samarasinghe, M.D. had 3,362 Medicare Part D claims for 361 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.