Dr. Sean M. O'Hara, MD
- Medicare services, 2024
- 755
- Medicare patients, 2024
- 653
- Part D claims, 2024
- 74
- Hospital affiliations
- 4
- Medical groups
- 8
- 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. O'Hara'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. Sean M. O'Hara is an emergency medicine physician in Boston, Massachusetts
Dr. O'Hara practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. O'Hara's NPI, 1023429370, was assigned on May 8, 2014. Dr. O'Hara graduated from Temple University School of Medicine in 2014. Dr. O'Hara holds Massachusetts license 290969.
- NPI
- 1023429370NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628339264
- NPI enumeration date
- May 8, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sean M. O'Hara practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. O'Hara'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. Sean M. O'Hara is affiliated with 5 sites of care and 8 medical groups
Dr. O'Hara's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. O'Hara is also affiliated with Salem Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. O'Hara to 2 more hospitals, 7 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. Sean M. O'Hara's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Hara practices, 5 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 |
| +4 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sean M. O'Hara is one of 1,483 emergency medicine physicians in Massachusetts
Emergency medicine is Dr. O'Hara's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. O'Hara is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. O'Hara's licenses on file in 2 states: Massachusetts and Texas.
Specialties and state licenses
- Emergency medicine, MassachusettsPrimary
- Texas license
Emergency medicine physicians near Dr. O'Hara
Counts of emergency medicine physicians 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. Sean M. O'Hara billed Medicare for 755 services in 2024
CMS data shows 755 Medicare services from Dr. O'Hara across 10 procedure codes in 2024, for 653 Medicare patients. Medicare paid $87,107 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. O'Hara's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5242024: 69332%
- Tests and treatments
- 2023: 242024: 3338%
- Imaging
- 2023: 132024: 29123%
- Surgery
- 2023: 122024: 0100%
Dr. O'Hara compared with the Massachusetts median for emergency medicine physicians, 2024
- Dr. O'Hara
- Massachusetts median
- Medicare services
- 755vs 3412.2 times
- Medicare patients
- 653vs 33794% above
- Part D claims
- 30vs 3617% below
Medians across 1,477 emergency medicine physicians in Massachusetts with Dmand AI profiles that report each measure.
Dr. O'Hara'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. Sean M. O'Hara treated 653 Medicare patients in 2024, average age 72
CMS counts 653 Medicare patients who saw Dr. O'Hara in 2024. The largest group is 75 to 84, with 211 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 43% are also on Medicaid. Their average risk score is 2.37, 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. O'Hara's median patient age at 55, with 49% women.
Dr. O'Hara's Medicare patients by age, 2024
Dr. O'Hara's Medicare patients by sex, 2024
- Women32049%
- Men33351%
Chronic conditions among Dr. O'Hara's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Mood disorders53%
- Anxiety50%
- Depression49%
- Ischemic heart disease47%
- Diabetes39%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Hara's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sean M. O'Hara wrote 74 Medicare Part D claims in 2024
In 2024, Dr. O'Hara wrote 74 Medicare Part D claims for 53 patients. 97% of them were for generic drugs. CMS names the drug for 30 of them, across 2 drugs with 11 or more claims each, at $406 in total drug cost. In 2021, CMS named 175 claims across 8 drugs.
Dr. O'Hara's Part D claims by kind of drug, 2024
- Generic72 claims97%
- Brand-name and other2 claims3%
Dr. O'Hara's most prescribed drugs by claims, 2022
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. O'Hara's Part D claims, 2024
- Antibiotics34%25 of 74 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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 1752022: 3083%
Drugs named by CMS: 2 in 2022, 8 in 2021.
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. Sean M. O'Hara takes part in Medicare
Dr. O'Hara 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. Sean M. O'Hara graduated from Temple University School of Medicine
Dr. O'Hara graduated from Temple University School of Medicine in 2014.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Sean M. O'Hara'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. Sean M. O'Hara
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. Sean M. O'Hara's NPI number?
Dr. Sean M. O'Hara's NPI number is 1023429370. It was assigned on May 8, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Sean M. O'Hara?
Dr. Sean M. O'Hara is an emergency medicine physician in Boston, Massachusetts. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Sean M. O'Hara practice?
Dr. O'Hara practices at 55 Fruit Street, Boston, MA 02114. Dr. O'Hara's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. O'Hara to 2 hospitals, 7 medical groups and 1 community health center.
What is Dr. Sean M. O'Hara's office phone number?
The practice phone on file for Dr. O'Hara is (617) 726-2000.
What is Dr. Sean M. O'Hara's medical license number?
Dr. O'Hara holds Massachusetts license 290969, one of the licenses on file in 2 states.
Which states has Dr. Sean M. O'Hara been licensed in?
Dmand AI has state licenses on file for Dr. O'Hara in Massachusetts and Texas.
Which hospitals is Dr. Sean M. O'Hara affiliated with?
Dr. O'Hara practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. O'Hara is also affiliated with Salem Hospital. Dmand AI links Dr. O'Hara to 2 more hospitals.
What medical group is Dr. Sean M. O'Hara part of?
Dr. O'Hara is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. O'Hara to 7 more medical groups.
Does Dr. Sean M. O'Hara accept Medicare?
Yes. CMS data shows Dr. O'Hara billed Medicare for 755 services in 2024, and Dr. O'Hara accepts Medicare assignment.
How many Medicare patients does Dr. Sean M. O'Hara see?
CMS counts 653 Medicare patients who saw Dr. O'Hara in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
Is Dr. Sean M. O'Hara board certified?
Yes. Dr. O'Hara is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Sean M. O'Hara bill to Medicare?
In 2024, Dr. O'Hara's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and hospital inpatient care (99223).
Where did Dr. Sean M. O'Hara go to medical school?
Dr. O'Hara graduated from Temple University School of Medicine in 2014.
What drugs does Dr. Sean M. O'Hara prescribe most?
In 2022 Medicare Part D data, Dr. O'Hara's most prescribed drugs by claims were Ondansetron ODT and Ibuprofen.
How long has Dr. Sean M. O'Hara been practicing?
Dr. O'Hara graduated from medical school in 2014, 12 years ago.
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