Dr. Clare M. Horkan, MD
- Medicare services, 2024
- 796
- Medicare patients, 2024
- 261
- Part D claims, 2024
- 48
- Hospital affiliations
- 3
- Medical group
- 1
- Practice address
- 75 Francis Street, Boston, MA 02115
- Practice phone
- Call (617) 732-5500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Horkan's professional email, personal email and mobile number
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Dr. Clare M. Horkan is an internist in Boston, Massachusetts
Dr. Horkan practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Horkan's NPI, 1982842514, was assigned on February 4, 2009. Dr. Horkan holds Massachusetts license 238712.
- NPI
- 1982842514NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406906585
- NPI enumeration date
- February 4, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 732-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Clare M. Horkan practices at Brigham and Women's Hospital in Boston, Massachusetts
Dr. Horkan's primary practice is Brigham and Women's Hospital, at 75 Francis Street, Boston, MA 02115 in Suffolk County. The practice phone is (617) 732-5500.
- Brigham and Women's Hospital75 Francis Street, Boston, MA 02115 · Suffolk CountyPhone(617) 732-5500
Source: Dmand AI Affiliation Data
Dr. Clare M. Horkan is affiliated with 4 sites of care and 1 medical group
Dr. Horkan's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Horkan is also affiliated with Beth Israel Deaconess Medical Center. The medical group on file is Brigham and Women's Hospital. Dmand AI also links Dr. Horkan to 1 more hospital and 1 hospital outpatient department, 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. Clare M. Horkan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Horkan practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brigham and Women's Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Clare M. Horkan is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Horkan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Horkan is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Horkan
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. Clare M. Horkan billed Medicare for 796 services in 2024
CMS data shows 796 Medicare services from Dr. Horkan across 6 procedure codes in 2024, for 261 Medicare patients. Medicare paid $62,540 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Horkan compared with the Massachusetts median for internists, 2024
- Dr. Horkan
- Massachusetts median
- Medicare services
- 796vs 43185% above
- Medicare patients
- 261vs 19435% above
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Horkan'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Horkan and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Clare M. Horkan treated 261 Medicare patients in 2024, average age 74
CMS counts 261 Medicare patients who saw Dr. Horkan in 2024. The largest group is 65 to 74, with 78 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 44% are also on Medicaid. Their average risk score is 3.29, 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. Horkan's median patient age at 68, with 57% women.
Dr. Horkan's Medicare patients by age, 2024
Dr. Horkan's Medicare patients by sex, 2024
- Women15057%
- Men11143%
Chronic conditions among Dr. Horkan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease62%
- Arthritis56%
- Mood disorders53%
- Ischemic heart disease52%
- Diabetes51%
- Anxiety50%
Share of Medicare patients with each condition. A patient can have several.
Dr. Horkan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Clare M. Horkan wrote 48 Medicare Part D claims in 2024
In 2024, Dr. Horkan wrote 48 Medicare Part D claims for 19 patients. 75% of them were for generic drugs.
Dr. Horkan's Part D claims by kind of drug, 2024
- Generic36 claims75%
- Brand-name12 claims25%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Clare M. Horkan takes part in Medicare
Dr. Horkan 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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Sources for Dr. Clare M. Horkan'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 (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) |
| 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. Clare M. Horkan
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. Clare M. Horkan's NPI number?
Dr. Clare M. Horkan's NPI number is 1982842514. It was assigned on February 4, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Clare M. Horkan?
Dr. Clare M. Horkan is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Clare M. Horkan practice?
Dr. Horkan practices at 75 Francis Street, Boston, MA 02115. Dr. Horkan's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Horkan to 1 hospital and 1 hospital outpatient department.
What is Dr. Clare M. Horkan's office phone number?
The practice phone on file for Dr. Horkan is (617) 732-5500.
What is Dr. Clare M. Horkan's medical license number?
Dr. Horkan holds Massachusetts license 238712.
Which hospitals is Dr. Clare M. Horkan affiliated with?
Dr. Horkan practices at Brigham and Women's Hospital in Boston, Massachusetts. Dr. Horkan is also affiliated with Beth Israel Deaconess Medical Center. Dmand AI links Dr. Horkan to 1 more hospital.
What medical group is Dr. Clare M. Horkan part of?
Dr. Horkan is linked to Brigham and Women's Hospital.
Does Dr. Clare M. Horkan accept Medicare?
Yes. CMS data shows Dr. Horkan billed Medicare for 796 services in 2024, and Dr. Horkan accepts Medicare assignment.
How many Medicare patients does Dr. Clare M. Horkan see?
CMS counts 261 Medicare patients who saw Dr. Horkan in 2024, with an average age of 74.
What services does Dr. Clare M. Horkan bill to Medicare?
In 2024, Dr. Horkan's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
How long has Dr. Clare M. Horkan been practicing?
Dr. Horkan graduated from medical school in 1999, 27 years ago.
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