Dr. Kerry L. O'Brien, MD
- Medicare services, 2024
- 27
- Medicare patients, 2024
- 37
- Part D claims, 2019
- 12
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 330 Brookline Avenue, Boston, MA 02215
- Practice phone
- Call (617) 667-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. O'Brien's professional email, personal email and mobile number
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Dr. Kerry L. O'Brien is a pathologist in Boston, Massachusetts
Dr. O'Brien practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health.
Dr. O'Brien's NPI, 1609856061, was assigned on January 20, 2006. Dr. O'Brien graduated from Boston University School of Medicine in 2002. Dr. O'Brien holds Massachusetts license 249249.
- NPI
- 1609856061NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315103256
- NPI enumeration date
- January 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 667-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kerry L. O'Brien practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts
Dr. O'Brien's primary practice is Beth Israel Deaconess Medical Center, at 330 Brookline Avenue, Boston, MA 02215 in Suffolk County. The practice phone is (617) 667-7000.
- Beth Israel Deaconess Medical Center330 Brookline Avenue, Boston, MA 02215 · Suffolk CountyPhone(617) 667-7000
Source: Dmand AI Affiliation Data
Dr. Kerry L. O'Brien is affiliated with 1 site of care and 2 medical groups
Dr. O'Brien's primary practice is Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health. The medical group on file is Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP). Dmand AI also links Dr. O'Brien to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kerry L. O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Beth Israel Deaconess Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Beth Israel Lahey Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Kerry L. O'Brien is one of 306 pathologists in Massachusetts
Anatomic pathology and clinical pathology is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dmand AI has Dr. O'Brien's licenses on file in 2 states: Massachusetts and Washington.
Specialties and state licenses
- Anatomic pathology and clinical pathology, MassachusettsPrimary
- Washington license
Pathologists near Dr. O'Brien
Counts of pathologists 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. Kerry L. O'Brien billed Medicare for 27 services in 2024
CMS data shows 27 Medicare services from Dr. O'Brien across 1 procedure code in 2024, for 37 Medicare patients. Medicare paid $1,099 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. O'Brien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 432024: 2737%
Dr. O'Brien compared with the Massachusetts median for pathologists, 2024
- Dr. O'Brien
- Massachusetts median
- Medicare services
- 27vs 1,36298% below
- Medicare patients
- 37vs 55593% below
Medians across 300 pathologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. O'Brien'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. Kerry L. O'Brien treated 37 Medicare patients in 2024, average age 74
CMS counts 37 Medicare patients who saw Dr. O'Brien in 2024. The largest group is 65 to 74, with 16 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 3.13, 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'Brien's median patient age at 64, with 71% women.
Dr. O'Brien's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. O'Brien's Medicare patients by sex, 2024
- Women2362%
- Men1438%
Chronic conditions among Dr. O'Brien's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Chronic kidney disease51%
- Atrial fibrillation46%
- Ischemic heart disease46%
- Heart failure38%
- Mood disorders38%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women71%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kerry L. O'Brien wrote 12 Medicare Part D claims in 2019
In 2019, Dr. O'Brien wrote 12 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $1,875 in total drug cost.
Dr. O'Brien's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Kerry L. O'Brien takes part in Medicare
Dr. O'Brien 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. Kerry L. O'Brien graduated from Boston University School of Medicine
Dr. O'Brien graduated from Boston University School of Medicine in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kerry L. O'Brien'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) |
| 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. Kerry L. O'Brien
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. Kerry L. O'Brien's NPI number?
Dr. Kerry L. O'Brien's NPI number is 1609856061. It was assigned on January 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kerry L. O'Brien?
Dr. Kerry L. O'Brien is a pathologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Kerry L. O'Brien practice?
Dr. O'Brien practices at 330 Brookline Avenue, Boston, MA 02215. Dr. O'Brien's primary practice is Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health. Dmand AI also links Dr. O'Brien to 1 medical group.
What is Dr. Kerry L. O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (617) 667-7000.
What is Dr. Kerry L. O'Brien's medical license number?
Dr. O'Brien holds Massachusetts license 249249, one of the licenses on file in 2 states.
Which states has Dr. Kerry L. O'Brien been licensed in?
Dmand AI has state licenses on file for Dr. O'Brien in Massachusetts and Washington.
Which hospitals is Dr. Kerry L. O'Brien affiliated with?
Dr. O'Brien practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts.
What medical group is Dr. Kerry L. O'Brien part of?
Dr. O'Brien is linked to Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP). Dmand AI links Dr. O'Brien to 1 more medical group.
Does Dr. Kerry L. O'Brien accept Medicare?
Yes. CMS data shows Dr. O'Brien billed Medicare for 27 services in 2024, and Dr. O'Brien accepts Medicare assignment.
How many Medicare patients does Dr. Kerry L. O'Brien see?
CMS counts 37 Medicare patients who saw Dr. O'Brien in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Kerry L. O'Brien bill to Medicare?
In 2024, Dr. O'Brien's most billed Medicare services were lab and pathology test (86077).
Where did Dr. Kerry L. O'Brien go to medical school?
Dr. O'Brien graduated from Boston University School of Medicine in 2002.
What drugs does Dr. Kerry L. O'Brien prescribe most?
In 2019 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Cefpodoxime Proxetil.
How long has Dr. Kerry L. O'Brien been practicing?
Dr. O'Brien graduated from medical school in 2002, 24 years ago.
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