Dr. Herath M. Wijerathna, MD
- Medicare services, 2024
- 344
- Medicare patients, 2024
- 164
- Part D claims, 2024
- 3,065
- Hospital affiliations
- 3
- Industry payments
- $71
- Practice address
- 55 Lake N Ave, Worcester, MA 01605
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Group Inc
Worcester, Massachusetts
Find Dr. Wijerathna's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Herath M. Wijerathna is an internist in Worcester, Massachusetts
Dr. Wijerathna practices at Umass Memorial Medical Group Inc in Worcester, Massachusetts.
Dr. Wijerathna's NPI, 1912232307, was assigned on October 2, 2009. Dr. Wijerathna holds Massachusetts license 265447.
- NPI
- 1912232307NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032366620
- NPI enumeration date
- October 2, 2009
- NPI status
- Active
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Herath M. Wijerathna practices at Umass Memorial Medical Group Inc in Worcester, Massachusetts
Dr. Wijerathna's primary practice is Umass Memorial Medical Group Inc, at 55 Lake N Ave, Worcester, MA 01605 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Group Inc55 Lake N Ave, Worcester, MA 01605 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Herath M. Wijerathna is affiliated with 6 sites of care and 1 medical group
Dr. Wijerathna's primary practice is Umass Memorial Medical Group Inc in Worcester, Massachusetts. Dr. Wijerathna is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Wijerathna to 2 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Herath M. Wijerathna's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wijerathna practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Group Inc | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Herath M. Wijerathna is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Wijerathna's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Wijerathna is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Wijerathna
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Herath M. Wijerathna billed Medicare for 344 services in 2024
CMS data shows 344 Medicare services from Dr. Wijerathna across 11 procedure codes in 2024, for 164 Medicare patients. Medicare paid $15,668 for them. Every service was in an office.
Dr. Wijerathna's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 5162024: 18564%
- Office and hospital visits
- 2023: 2232024: 12245%
- Other services
- 2023: 1342024: 3772%
- Tests and treatments
- 2023: 632024: 0100%
Dr. Wijerathna compared with the Massachusetts median for internists, 2024
- Dr. Wijerathna
- Massachusetts median
- Medicare services
- 344vs 43120% below
- Medicare patients
- 164vs 19415% below
- Part D claims
- 2,541vs 4026.3 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Wijerathna's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Herath M. Wijerathna treated 164 Medicare patients in 2024, average age 71
CMS counts 164 Medicare patients who saw Dr. Wijerathna in 2024. The largest group is 65 to 74, with 68 patients. 71% of them have high cholesterol, and 66% have high blood pressure. 34% are also on Medicaid. Their average risk score is 1.09, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Wijerathna's median patient age at 60, with 72% women.
Dr. Wijerathna's Medicare patients by age, 2024
Dr. Wijerathna's Medicare patients by sex, 2024
- Women13884%
- Men2616%
Chronic conditions among Dr. Wijerathna's Medicare patients, 2024
- High cholesterol71%
- High blood pressure66%
- Arthritis37%
- Mood disorders33%
- Anxiety32%
- Depression27%
- Diabetes26%
- Chronic kidney disease24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Wijerathna's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women72%
- Men28%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Herath M. Wijerathna wrote 3,065 Medicare Part D claims in 2024
In 2024, Dr. Wijerathna wrote 3,065 Medicare Part D claims for 403 patients. 90% of them were for generic drugs. CMS names the drug for 2,541 of them, across 61 drugs with 11 or more claims each, at $51,361 in total drug cost. In 2023, CMS named 3,620 claims across 79 drugs.
Dr. Wijerathna's Part D claims by kind of drug, 2024
- Generic2,764 claims90%
- Brand-name265 claims9%
- Other36 claims1%
Dr. Wijerathna's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Wijerathna's Part D claims, 2024
- Opioids3%97 of 3,065 claims
- Antibiotics2%64 of 3,065 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,6202024: 2,54130%
Drugs named by CMS: 61 in 2024, 79 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Herath M. Wijerathna received $71 in industry payments from 2024 to 2025
CMS Open Payments shows 3 general payments to Dr. Wijerathna from 1 drug or device company from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $71.
General payments to Dr. Wijerathna by program year, 2024 to 2025
Companies that paid Dr. Wijerathna the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Herath M. Wijerathna's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Herath M. Wijerathna
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Herath M. Wijerathna's NPI number?
Dr. Herath M. Wijerathna's NPI number is 1912232307. It was assigned on October 2, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Herath M. Wijerathna?
Dr. Herath M. Wijerathna is an internist in Worcester, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Herath M. Wijerathna practice?
Dr. Wijerathna practices at 55 Lake N Ave, Worcester, MA 01605. Dr. Wijerathna's primary practice is Umass Memorial Medical Group Inc in Worcester, Massachusetts. Dmand AI also links Dr. Wijerathna to 2 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. Herath M. Wijerathna's office phone number?
The practice phone on file for Dr. Wijerathna is (508) 334-1000.
What is Dr. Herath M. Wijerathna's medical license number?
Dr. Wijerathna holds Massachusetts license 265447.
Which hospitals is Dr. Herath M. Wijerathna affiliated with?
Dr. Wijerathna is affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Wijerathna to 2 more hospitals.
What medical group is Dr. Herath M. Wijerathna part of?
Dr. Wijerathna is linked to UMass Memorial Medical Group.
Does Dr. Herath M. Wijerathna accept Medicare?
Yes. CMS data shows Dr. Wijerathna billed Medicare for 344 services in 2024.
How many Medicare patients does Dr. Herath M. Wijerathna see?
CMS counts 164 Medicare patients who saw Dr. Wijerathna in 2024, with an average age of 71.
What services does Dr. Herath M. Wijerathna bill to Medicare?
In 2024, Dr. Wijerathna's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and lab and pathology test (80061).
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What drugs does Dr. Herath M. Wijerathna prescribe most?
In 2024 Medicare Part D data, Dr. Wijerathna's most prescribed drugs by claims were Amlodipine Besylate, Levothyroxine Sodium and Atorvastatin Calcium.
Has Dr. Herath M. Wijerathna received payments from drug or device companies?
CMS Open Payments shows $71 in general payments to Dr. Wijerathna from 1 company from 2024 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Herath M. Wijerathna been practicing?
Dr. Wijerathna graduated from medical school in 1998, 28 years ago.
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