Dr. Kathleen Elizabeth Corey, MD
- Medicare services, 2024
- 261
- Medicare patients, 2024
- 182
- Part D claims, 2024
- 256
- Hospital affiliations
- 5
- Industry payments
- $108,794
- 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. Corey's professional email, personal email and mobile number
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Dr. Kathleen Elizabeth Corey is a gastroenterologist in Boston, Massachusetts
Dr. Corey practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Corey's NPI, 1326174038, was assigned on February 26, 2007. Dr. Corey graduated from Duke University School of Medicine in 2003. Dr. Corey holds Massachusetts license P-226977.
- NPI
- 1326174038NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608974043
- NPI enumeration date
- February 26, 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
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kathleen Elizabeth Corey practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Corey'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. Kathleen Elizabeth Corey is affiliated with 8 sites of care and 2 medical groups
Dr. Corey's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Corey 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. Corey to 3 more hospitals, 2 group practices and clinics, 1 community health center and 1 medical group, 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. Kathleen Elizabeth Corey's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Corey practices, 8 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 |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kathleen Elizabeth Corey is one of 597 gastroenterologists in Massachusetts
Gastroenterology is Dr. Corey's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Corey is licensed in Massachusetts.
Specialties and state licenses
- Gastroenterology, MassachusettsPrimary
Gastroenterologists near Dr. Corey
Counts of gastroenterologists 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. Kathleen Elizabeth Corey billed Medicare for 261 services in 2024
CMS data shows 261 Medicare services from Dr. Corey across 7 procedure codes in 2024, for 182 Medicare patients. Medicare paid $21,511 for them.
Dr. Corey's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2192024: 2253%
- Other services
- 2023: 542024: 2259%
- Surgery
- 2023: 122024: 1417%
Where Dr. Corey's Medicare services took place, 2024
- In an office6023%
- In a facility20177%
Dr. Corey compared with the Massachusetts median for gastroenterologists, 2024
- Dr. Corey
- Massachusetts median
- Medicare services
- 261vs 51950% below
- Medicare patients
- 182vs 34347% below
- Part D claims
- 151vs 30050% below
Medians across 583 gastroenterologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Corey'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. Kathleen Elizabeth Corey treated 182 Medicare patients in 2024, average age 72
CMS counts 182 Medicare patients who saw Dr. Corey in 2024. The largest group is 65 to 74, with 88 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 27% are also on Medicaid. Their average risk score is 1.90, 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. Corey's median patient age at 68, with 51% women.
Dr. Corey's Medicare patients by age, 2024
Dr. Corey's Medicare patients by sex, 2024
- Women10256%
- Men8044%
Chronic conditions among Dr. Corey's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Diabetes45%
- Arthritis39%
- Chronic kidney disease39%
- Ischemic heart disease36%
- Mood disorders36%
- Depression33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Corey'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
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kathleen Elizabeth Corey wrote 256 Medicare Part D claims in 2024
In 2024, Dr. Corey wrote 256 Medicare Part D claims for 88 patients. 77% of them were for generic drugs. CMS names the drug for 151 of them, across 6 drugs with 11 or more claims each, at $185,738 in total drug cost. In 2023, CMS named 112 claims across 5 drugs.
Dr. Corey's Part D claims by kind of drug, 2024
- Generic196 claims77%
- Brand-name and other60 claims23%
Dr. Corey'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. Corey's Part D claims, 2024
- Antibiotics11%28 of 256 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: 1122024: 15135%
Drugs named by CMS: 6 in 2024, 5 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. Kathleen Elizabeth Corey ranks in the 67th percentile for colonoscopy in Medicare
Dr. Corey accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Corey as offering telehealth. CMS counts 60 procedures of colonoscopy by Dr. Corey, more than 67% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Corey ranks in Medicare procedure volume
- Colonoscopy
- 67th percentile60 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 62nd percentile45 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Kathleen Elizabeth Corey received $108,794 in industry payments from 2017 to 2025
CMS Open Payments shows 56 general payments to Dr. Corey from 12 drug and device companies from 2017 to 2025. Consulting fees make up the largest share, 80% of the total. Novo Nordisk AS paid the most, $59,287.
General payments to Dr. Corey by program year, 2017 to 2025
General payments to Dr. Corey by kind, 2017 to 2025
- Consulting fees$86,62480%
- Travel and lodging$21,09219%
- Food and beverage$9251%
- Speaker and faculty fees$890%
- Education$650%
Companies that paid Dr. Corey the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kathleen Elizabeth Corey graduated from Duke University School of Medicine
Dr. Corey graduated from Duke University School of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kathleen Elizabeth Corey'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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. Kathleen Elizabeth Corey
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. Kathleen Elizabeth Corey's NPI number?
Dr. Kathleen Elizabeth Corey's NPI number is 1326174038. It was assigned on February 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathleen Elizabeth Corey?
Dr. Kathleen Elizabeth Corey is a gastroenterologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Kathleen Elizabeth Corey practice?
Dr. Corey practices at 55 Fruit Street, Boston, MA 02114. Dr. Corey's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Corey to 3 hospitals, 2 group practices and clinics, 1 community health center and 1 medical group.
What is Dr. Kathleen Elizabeth Corey's office phone number?
The practice phone on file for Dr. Corey is (617) 726-2000.
What is Dr. Kathleen Elizabeth Corey's medical license number?
Dr. Corey holds Massachusetts license P-226977.
Which hospitals is Dr. Kathleen Elizabeth Corey affiliated with?
Dr. Corey practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Corey is also affiliated with Brigham and Women's Hospital. Dmand AI links Dr. Corey to 3 more hospitals.
What medical group is Dr. Kathleen Elizabeth Corey part of?
Dr. Corey is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Corey to 1 more medical group.
Does Dr. Kathleen Elizabeth Corey accept Medicare?
Yes. CMS data shows Dr. Corey billed Medicare for 261 services in 2024, and Dr. Corey accepts Medicare assignment.
Does Dr. Kathleen Elizabeth Corey offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Corey as offering telehealth services.
How many Medicare patients does Dr. Kathleen Elizabeth Corey see?
CMS counts 182 Medicare patients who saw Dr. Corey in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. Kathleen Elizabeth Corey bill to Medicare?
In 2024, Dr. Corey's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99232) and hospital inpatient care (99233).
Where did Dr. Kathleen Elizabeth Corey go to medical school?
Dr. Corey graduated from Duke University School of Medicine in 2003.
What drugs does Dr. Kathleen Elizabeth Corey prescribe most?
In 2024 Medicare Part D data, Dr. Corey's most prescribed drugs by claims were Gavilyte-G, Xifaxan and Omeprazole.
Has Dr. Kathleen Elizabeth Corey received payments from drug or device companies?
CMS Open Payments shows $108,794 in general payments to Dr. Corey from 12 companies from 2017 to 2025. The largest total came from Novo Nordisk AS.
How long has Dr. Kathleen Elizabeth Corey been practicing?
Dr. Corey graduated from medical school in 2003, 23 years ago.
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