Herath M. Wijerathna, M.D.
Internal Medicine Physician · Sutton, MA
Herath M. Wijerathna, M.D. is an internal medicine physician with a practice address in Sutton, Massachusetts, and NPI 1912232307, issued on Oct 2, 2009. Check the license (Massachusetts 265447, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Herath M. Wijerathna
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 265447 MA
Self-reported in NPPES; status is on the state search - Practice location
- 188 Worcester Providence Tpke, Sutton, MA 01590
- Phone
- (508) 865-3650
- Enumerated
- Oct 2, 2009
- Record last updated
- Aug 7, 2024
- Fax
- (508) 865-3822
- Medicare enrollment
- Enrolled (PECOS I20160725002628); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 188 Worcester Providence Tpke
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abdulraouf Ghandour, M.D.Family Medicine Physician1629276803
- James Gilbert, M.D.Internal Medicine Physician1770566242
- Rebecca Kasenge, D.O.Internal Medicine Physician1629121660
Verify Herath M. Wijerathna in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 265447Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,065 Medicare Part D claims for 403 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 97 claims were for opioids.
Most prescribed
- Amlodipine Besylate204 claims
- Levothyroxine Sodium162 claims
- Atorvastatin Calcium161 claims
- Losartan Potassium142 claims
- Lisinopril121 claims
- Omeprazole109 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: $19.29
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. 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
- Umass Memorial Medical Group IncSutton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Herath M. Wijerathna among 6,825 internal medicine physician records in Massachusetts
Herath M. Wijerathna, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1998 · median 2004 among the 4,103 with a school on file
- Record last updated2024 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 internal medicine physician records list a practice address in Sutton
They are 4 of the 64 NPPES records with a practice address in Sutton, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Sutton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- James Gilbert, M.D.Sutton, MA 015901770566242
- Mary Gulla, M.D.Sutton, MA 015901902869571
- Rebecca Kasenge, D.O.Sutton, MA 015901629121660
- Merl Macneil, M.D., P.C.Whittinsville, MA 015881023173655
- Timothy Hogan, MDWest Boylston, MA 015831730409335
- Michael Theerman, M.D.West Boylston, MA 015831467426080
- Susan Fine, MDWestborough, MA 015811639396955
- Yanina GolubchikWestborough, MA 015811780962019
Common questions
What is Herath M. Wijerathna, M.D.'s NPI number?
Herath M. Wijerathna, M.D.'s National Provider Identifier (NPI) is 1912232307, issued on Oct 2, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Herath M. Wijerathna, M.D. located?
The NPPES record lists a practice address at 188 Worcester Providence Tpke, Sutton, MA, 01590. Phone: (508) 865-3650. Providers update this record themselves, so call before visiting.
How can I verify Herath M. Wijerathna, M.D.'s license?
NPPES lists Massachusetts license number 265447, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Herath M. Wijerathna, M.D. prescribe under Medicare Part D?
In 2024, Herath M. Wijerathna, M.D. had 3,065 Medicare Part D claims for 403 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.