Dr. Oyere K. Onuma, MD
- Medicare services, 2024
- 905
- Medicare patients, 2024
- 622
- Part D claims, 2024
- 315
- Hospital affiliations
- 5
- Medical groups
- 4
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Onuma's professional email, personal email and mobile number
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Dr. Oyere K. Onuma is a cardiologist in Boston, Massachusetts
Dr. Onuma practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Onuma's NPI, 1760687339, was assigned on June 15, 2007. Dr. Onuma graduated from Yale University School of Medicine in 2007. Dr. Onuma holds Connecticut license 64153.
- NPI
- 1760687339NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597922336
- NPI enumeration date
- June 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Oyere K. Onuma practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Onuma's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Oyere K. Onuma is affiliated with 6 sites of care and 4 medical groups
Dr. Onuma's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Onuma is also affiliated with Brigham and Women's Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Onuma to 3 more hospitals, 3 medical groups and 1 community health center, 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. Oyere K. Onuma's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Onuma practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +5 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Oyere K. Onuma is one of 840 cardiologists in Massachusetts
Cardiovascular disease is Dr. Onuma's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dmand AI has Dr. Onuma's licenses on file in 2 states: Connecticut and Massachusetts.
Specialties and state licenses
- Cardiovascular disease, ConnecticutPrimary
- Internal medicine, Massachusetts
Cardiologists near Dr. Onuma
Counts of cardiologists 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. Oyere K. Onuma billed Medicare for 905 services in 2024
CMS data shows 905 Medicare services from Dr. Onuma across 9 procedure codes in 2024, for 622 Medicare patients. Medicare paid $42,284 for them.
Dr. Onuma's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 442024: 5381123%
- Office and hospital visits
- 2023: 1362024: 367170%
Where Dr. Onuma's Medicare services took place, 2024
- In an office22525%
- In a facility68075%
Dr. Onuma compared with the Massachusetts median for cardiologists, 2024
- Dr. Onuma
- Massachusetts median
- Medicare services
- 905vs 1,61244% below
- Medicare patients
- 622vs 95635% below
- Part D claims
- 197vs 84677% below
Medians across 817 cardiologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Onuma'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. Oyere K. Onuma treated 622 Medicare patients in 2024, average age 74
CMS counts 622 Medicare patients who saw Dr. Onuma in 2024. The largest group is 65 to 74, with 219 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 2.30, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Onuma's median patient age at 66, with 45% women.
Dr. Onuma's Medicare patients by age, 2024
Dr. Onuma's Medicare patients by sex, 2024
- Women29648%
- Men32652%
Chronic conditions among Dr. Onuma's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease61%
- Arthritis53%
- Heart failure49%
- Chronic kidney disease46%
- Atrial fibrillation44%
- Mood disorders44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Onuma's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women45%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Oyere K. Onuma wrote 315 Medicare Part D claims in 2024
In 2024, Dr. Onuma wrote 315 Medicare Part D claims for 93 patients. 90% of them were for generic drugs. CMS names the drug for 197 of them, across 8 drugs with 11 or more claims each, at $2,849 in total drug cost. In 2023, CMS named 83 claims across 4 drugs.
Dr. Onuma's Part D claims by kind of drug, 2024
- Generic282 claims90%
- Brand-name33 claims10%
Dr. Onuma'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 832024: 197137%
Drugs named by CMS: 8 in 2024, 4 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
Dr. Oyere K. Onuma offers telehealth to Medicare patients
Dr. Onuma accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Onuma as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Oyere K. Onuma graduated from Yale University School of Medicine
Dr. Onuma graduated from Yale University School of Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Oyere K. Onuma'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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Oyere K. Onuma
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. Oyere K. Onuma's NPI number?
Dr. Oyere K. Onuma's NPI number is 1760687339. It was assigned on June 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Oyere K. Onuma?
Dr. Oyere K. Onuma is a cardiologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Oyere K. Onuma practice?
Dr. Onuma practices at 55 Fruit Street, Boston, MA 02114. Dr. Onuma's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Onuma to 3 hospitals, 3 medical groups and 1 community health center.
What is Dr. Oyere K. Onuma's office phone number?
The practice phone on file for Dr. Onuma is (617) 726-2000.
What is Dr. Oyere K. Onuma's medical license number?
Dr. Onuma holds Connecticut license 64153, one of the licenses on file in 2 states.
Which states has Dr. Oyere K. Onuma been licensed in?
Dmand AI has state licenses on file for Dr. Onuma in Connecticut and Massachusetts.
Which hospitals is Dr. Oyere K. Onuma affiliated with?
Dr. Onuma practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Onuma is also affiliated with Brigham and Women's Hospital. Dmand AI links Dr. Onuma to 3 more hospitals.
What medical group is Dr. Oyere K. Onuma part of?
Dr. Onuma is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Onuma to 3 more medical groups.
Does Dr. Oyere K. Onuma accept Medicare?
Yes. CMS data shows Dr. Onuma billed Medicare for 905 services in 2024, and Dr. Onuma accepts Medicare assignment.
Does Dr. Oyere K. Onuma offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Onuma as offering telehealth services.
Show 5 more questionsShow fewer questions
How many Medicare patients does Dr. Oyere K. Onuma see?
CMS counts 622 Medicare patients who saw Dr. Onuma in 2024, with an average age of 74.
What services does Dr. Oyere K. Onuma bill to Medicare?
In 2024, Dr. Onuma's most billed Medicare services were heart test or procedure (93010), hospital inpatient care (99232) and hospital inpatient care (99233).
Where did Dr. Oyere K. Onuma go to medical school?
Dr. Onuma graduated from Yale University School of Medicine in 2007.
What drugs does Dr. Oyere K. Onuma prescribe most?
In 2024 Medicare Part D data, Dr. Onuma's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Lisinopril.
How long has Dr. Oyere K. Onuma been practicing?
Dr. Onuma graduated from medical school in 2007, 19 years ago.
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