Dr. John Louis Oleary, DO
- Medicare services, 2024
- 155
- Medicare patients, 2024
- 75
- Part D claims, 2024
- 2,357
- Hospital affiliations
- 3
- Industry payments
- $2,397
- Practice address
- 100 Kenyon Ave, Wakefield, RI 02879
- Practice phone
- Call (401) 782-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Oleary's professional email, personal email and mobile number
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Dr. John Louis Oleary is an internist in Wakefield, Rhode Island
Dr. Oleary practices at South County Hospital in Wakefield, Rhode Island, part of South County Health.
Dr. Oleary's NPI, 1871559807, was assigned on April 26, 2006. Dr. Oleary holds Rhode Island license DO333.
- NPI
- 1871559807NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911994421
- NPI enumeration date
- April 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (401) 782-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Louis Oleary practices at South County Hospital in Wakefield, Rhode Island
Dr. Oleary's primary practice is South County Hospital, at 100 Kenyon Ave, Wakefield, RI 02879 in Washington County. The practice phone is (401) 782-8000.
- South County Hospital100 Kenyon Ave, Wakefield, RI 02879 · Washington CountyPhone(401) 782-8000
Source: Dmand AI Affiliation Data
Dr. John Louis Oleary is affiliated with 4 sites of care
Dr. Oleary's primary practice is South County Hospital in Wakefield, Rhode Island, part of South County Health. Dr. Oleary is also affiliated with The Miriam Hospital. Dmand AI also links Dr. Oleary to 1 more hospital and 1 home health agency, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Louis Oleary's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oleary practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| South County Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across South County Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Louis Oleary is one of 805 internists in Rhode Island
Internal medicine is Dr. Oleary's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Oleary is licensed in Rhode Island.
Specialties and state licenses
- Internal medicine, Rhode IslandPrimary
Internists near Dr. Oleary
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. John Louis Oleary billed Medicare for 155 services in 2024
CMS data shows 155 Medicare services from Dr. Oleary across 2 procedure codes in 2024, for 75 Medicare patients. Medicare paid $13,417 for them. Every service was in an office.
Dr. Oleary's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1512024: 10729%
- Other services
- 2023: 522024: 488%
- Tests and treatments
- 2023: 492024: 0100%
Dr. Oleary compared with the Rhode Island median for internists, 2024
- Dr. Oleary
- Rhode Island median
- Medicare services
- 155vs 34255% below
- Medicare patients
- 75vs 14548% below
- Part D claims
- 1,895vs 2846.7 times
Medians across 772 internists in Rhode Island with Dmand AI profiles that report each measure.
Dr. Oleary'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.
Need commercial claims for Dr. Oleary?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oleary and other internists in Rhode Island.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Louis Oleary treated 75 Medicare patients in 2024, average age 79
CMS counts 75 Medicare patients who saw Dr. Oleary in 2024. The largest group is 75 to 84, with 34 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.21, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oleary's median patient age at 72, with 41% women.
Dr. Oleary's Medicare patients by age, 2024
Dr. Oleary's Medicare patients by sex, 2024
- Women2837%
- Men4763%
Chronic conditions among Dr. Oleary's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Ischemic heart disease41%
- Diabetes35%
- Anxiety25%
- Atrial fibrillation23%
- Cancer20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oleary's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women41%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Louis Oleary wrote 2,357 Medicare Part D claims in 2024
In 2024, Dr. Oleary wrote 2,357 Medicare Part D claims for 140 patients. 90% of them were for generic drugs. CMS names the drug for 1,895 of them, across 63 drugs with 11 or more claims each, at $148,208 in total drug cost. In 2023, CMS named 1,705 claims across 55 drugs.
Dr. Oleary's Part D claims by kind of drug, 2024
- Generic2,110 claims90%
- Brand-name and other247 claims10%
Dr. Oleary'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. Oleary's Part D claims, 2024
- Opioids2%36 of 2,357 claims
- Antibiotics4%101 of 2,357 claims
- Antipsychotics, patients 65 and over2%46 of 2,357 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: 1,7052024: 1,89511%
Drugs named by CMS: 63 in 2024, 55 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
How Dr. John Louis Oleary takes part in Medicare
Dr. Oleary accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Louis Oleary received $2,397 in industry payments from 2016 to 2022
CMS Open Payments shows 159 general payments to Dr. Oleary from 8 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 93% of the total. AstraZeneca Pharmaceuticals LP paid the most, $918.
General payments to Dr. Oleary by program year, 2016 to 2022
General payments to Dr. Oleary by kind, 2016 to 2022
- Food and beverage$2,23693%
- Speaker and faculty fees$1326%
- Education$291%
Companies that paid Dr. Oleary the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Louis Oleary'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. John Louis Oleary
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. John Louis Oleary's NPI number?
Dr. John Louis Oleary's NPI number is 1871559807. It was assigned on April 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Louis Oleary?
Dr. John Louis Oleary is an internist in Wakefield, Rhode Island. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John Louis Oleary practice?
Dr. Oleary practices at 100 Kenyon Ave, Wakefield, RI 02879. Dr. Oleary's primary practice is South County Hospital in Wakefield, Rhode Island, part of South County Health. Dmand AI also links Dr. Oleary to 1 hospital and 1 home health agency.
What is Dr. John Louis Oleary's office phone number?
The practice phone on file for Dr. Oleary is (401) 782-8000.
What is Dr. John Louis Oleary's medical license number?
Dr. Oleary holds Rhode Island license DO333.
Which hospitals is Dr. John Louis Oleary affiliated with?
Dr. Oleary practices at South County Hospital in Wakefield, Rhode Island. Dr. Oleary is also affiliated with The Miriam Hospital. Dmand AI links Dr. Oleary to 1 more hospital.
Does Dr. John Louis Oleary accept Medicare?
Yes. CMS data shows Dr. Oleary billed Medicare for 155 services in 2024, and Dr. Oleary accepts Medicare assignment.
How many Medicare patients does Dr. John Louis Oleary see?
CMS counts 75 Medicare patients who saw Dr. Oleary in 2024, with an average age of 79.
What services does Dr. John Louis Oleary bill to Medicare?
In 2024, Dr. Oleary's most billed Medicare services were office visit, established patient (99213) and medicare service (G0439).
What drugs does Dr. John Louis Oleary prescribe most?
In 2024 Medicare Part D data, Dr. Oleary's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Rosuvastatin Calcium.
Has Dr. John Louis Oleary received payments from drug or device companies?
CMS Open Payments shows $2,397 in general payments to Dr. Oleary from 8 companies from 2016 to 2022. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. John Louis Oleary been practicing?
Dr. Oleary graduated from medical school in 1984, 42 years ago.
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