The association among diet, dietary fiber, and bowel preparation at colonoscopy (opens in a new tab)
Gastrointest Endosc
CatharticsColonoscopyDiet
Dr. Kristin Loening MacArthur, MD
NPI1225357809PAC ID9739311648
- Medicare services, 2024
- 358
- Medicare patients, 2024
- 246
- Part D claims, 2024
- 1,155
- Publications
- 6
- Hospital affiliations
- 1
- Practice address
- 687 Main Street, Branford, CT 06405
- Practice phone
- Call (203) 481-0315
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Branford Endoscopy Center
Surgery Center - Medicare-Certified · Branford, Connecticut
Find Dr. MacArthur'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. Kristin Loening MacArthur is a gastroenterologist in Branford, Connecticut
Dr. MacArthur practices at Branford Endoscopy Center in Branford, Connecticut.
Dr. MacArthur's NPI, 1225357809, was assigned on May 22, 2010. Dr. MacArthur graduated from University of Connecticut in 2010. Dr. MacArthur holds Connecticut license 055229.
NPI and contact details
- NPI
- 1225357809NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739311648
- NPI enumeration date
- May 22, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 481-0315
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kristin Loening MacArthur practices at Branford Endoscopy Center in Branford, Connecticut
Dr. MacArthur's primary practice is Branford Endoscopy Center, at 687 Main Street, Branford, CT 06405. The practice phone is (203) 481-0315.
- Branford Endoscopy Center687 Main Street, Branford, CT 06405Phone(203) 481-0315
Source: Dmand AI Affiliation Data
Dr. Kristin Loening MacArthur is affiliated with 4 sites of care and 3 medical groups
Dr. MacArthur's primary practice is Branford Endoscopy Center in Branford, Connecticut. Dr. MacArthur is also affiliated with Yale New Haven Hospital. The medical group on file is Digestive Disease Associates. Dmand AI also links Dr. MacArthur to 2 more medical groups, 1 group practice or clinic and 1 therapy and rehab clinic, each named with a free account.
Branford Endoscopy CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kristin Loening MacArthur's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. MacArthur practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Branford Endoscopy Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kristin Loening MacArthur is one of 298 gastroenterologists in Connecticut
Gastroenterology is Dr. MacArthur's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. MacArthur is licensed in Connecticut.
Specialties and state licenses
- Gastroenterology, ConnecticutPrimary
Gastroenterologists near Dr. MacArthur
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
298gastroenterologists in Connecticut
6gastroenterologists in Branford
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Kristin Loening MacArthur billed Medicare for 358 services in 2024
CMS data shows 358 Medicare services from Dr. MacArthur across 9 procedure codes in 2024, for 246 Medicare patients. Medicare paid $38,415 for them.
Medicare services, 2024358
Medicare patients246
Paid by Medicare$38,415
Procedure codes9
Dr. MacArthur's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1792024: 23934%
- Surgery
- 2023: 1102024: 1198%
Where Dr. MacArthur's Medicare services took place, 2024
- In an office22162%
- In a facility13738%
Dr. MacArthur compared with the Connecticut median for gastroenterologists, 2024
- Dr. MacArthur
- Connecticut median
- Medicare services
- 358vs 361Close to median
- Medicare patients
- 246vs 253Close to median
- Part D claims
- 960vs 53878% above
Medians across 284 gastroenterologists in Connecticut with Dmand AI profiles that report each measure.
Dr. MacArthur'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. Kristin Loening MacArthur treated 246 Medicare patients in 2024, average age 73
CMS counts 246 Medicare patients who saw Dr. MacArthur in 2024. The largest group is 65 to 74, with 110 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. MacArthur's median patient age at 67, with 82% women.
Medicare patients, 2024246
Average age73
Average risk score1.36
Also on Medicaid15%
Dr. MacArthur's Medicare patients by age, 2024
Dr. MacArthur's Medicare patients by sex, 2024
- Women19378%
- Men5322%
Chronic conditions among Dr. MacArthur's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis50%
- Anxiety33%
- Mood disorders30%
- Depression27%
- Ischemic heart disease24%
- Osteoporosis24%
Share of Medicare patients with each condition. A patient can have several.
Dr. MacArthur's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women82%
- Men16%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kristin Loening MacArthur wrote 1,155 Medicare Part D claims in 2024
In 2024, Dr. MacArthur wrote 1,155 Medicare Part D claims for 402 patients. 75% of them were for generic drugs. CMS names the drug for 960 of them, across 20 drugs with 11 or more claims each, at $679,228 in total drug cost. In 2023, CMS named 983 claims across 20 drugs.
Part D claims, 20241,155
Drugs named by CMS20
Total drug cost$679,228
Part D patients402
Dr. MacArthur's Part D claims by kind of drug, 2024
- Generic861 claims75%
- Brand-name and other294 claims25%
Dr. MacArthur'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. MacArthur's Part D claims, 2024
- Opioids1%14 of 1,155 claims
- Antibiotics3%37 of 1,155 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: 9832024: 9602%
Drugs named by CMS: 20 in 2024, 20 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. Kristin Loening MacArthur ranks in the 67th percentile for colonoscopy in Medicare
Dr. MacArthur accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 60 procedures of colonoscopy by Dr. MacArthur, more than 67% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. MacArthur ranks in Medicare procedure volume
- Colonoscopy
- 67th percentile60 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 62nd percentile47 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. Kristin Loening MacArthur has 6 publications on record
Dmand AI links 6 papers to Dr. MacArthur, published from 2013 to 2018. The most frequent topics are Cathartics and Colonoscopy. Dr. MacArthur has published most often in Gastrointest Endosc. Dr. MacArthur's most frequent co-authors are Anna Leszczynski, Tyler M. Berzin, MD and Steven D. Freedman, MD.
Papers6
Years published2013 to 2018
Dr. MacArthur's papers by year, 2013 to 2018
Topics Dr. MacArthur writes about most
- Cathartics
- Colonoscopy
Dr. MacArthur's most frequent co-authors
- Anna Leszczynski2 shared papers
- Tyler M. Berzin, MD1 shared paper
- Steven D. Freedman, MD1 shared paper
Recent publications by Dr. MacArthur
Pancreatology
Critical IllnessLipasePancreatitis
World J Gastroenterol
Disease Models, AnimalHepacivirusHepatitis C
Gastrointest Endosc
CatharticsColonoscopyPatient Education as Topic
See who Dr. MacArthur researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. MacArthur works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kristin Loening MacArthur received $10,343 in industry payments from 2016 to 2025
CMS Open Payments shows 547 general payments to Dr. MacArthur from 41 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $2,163.
General payments to Dr. MacArthur by program year, 2016 to 2025
General payments to Dr. MacArthur by kind, 2016 to 2025
$10.3Kin total
- Food and beverage$10,293100%
- Education$500%
Companies that paid Dr. MacArthur the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kristin Loening MacArthur graduated from University of Connecticut
Dr. MacArthur graduated from University of Connecticut in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kristin Loening MacArthur'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Kristin Loening MacArthur
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. Kristin Loening MacArthur's NPI number?
Dr. Kristin Loening MacArthur's NPI number is 1225357809. It was assigned on May 22, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Kristin Loening MacArthur?
Dr. Kristin Loening MacArthur is a gastroenterologist in Branford, Connecticut. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Kristin Loening MacArthur practice?
Dr. MacArthur practices at 687 Main Street, Branford, CT 06405. Dr. MacArthur's primary practice is Branford Endoscopy Center in Branford, Connecticut. Dmand AI also links Dr. MacArthur to 2 medical groups, 1 group practice or clinic and 1 therapy and rehab clinic.
What is Dr. Kristin Loening MacArthur's office phone number?
The practice phone on file for Dr. MacArthur is (203) 481-0315.
What is Dr. Kristin Loening MacArthur's medical license number?
Dr. MacArthur holds Connecticut license 055229.
Which hospitals is Dr. Kristin Loening MacArthur affiliated with?
Dr. MacArthur is affiliated with Yale New Haven Hospital.
What medical group is Dr. Kristin Loening MacArthur part of?
Dr. MacArthur is linked to Digestive Disease Associates. Dmand AI links Dr. MacArthur to 2 more medical groups.
Does Dr. Kristin Loening MacArthur accept Medicare?
Yes. CMS data shows Dr. MacArthur billed Medicare for 358 services in 2024, and Dr. MacArthur accepts Medicare assignment.
How many Medicare patients does Dr. Kristin Loening MacArthur see?
CMS counts 246 Medicare patients who saw Dr. MacArthur in 2024, with an average age of 73.
What services does Dr. Kristin Loening MacArthur bill to Medicare?
In 2024, Dr. MacArthur's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99204).
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Where did Dr. Kristin Loening MacArthur go to medical school?
Dr. MacArthur graduated from University of Connecticut in 2010.
What drugs does Dr. Kristin Loening MacArthur prescribe most?
In 2024 Medicare Part D data, Dr. MacArthur's most prescribed drugs by claims were Pantoprazole Sodium, Omeprazole and Sod Sulf-Potass Sulf-Mag Sulf.
Has Dr. Kristin Loening MacArthur received payments from drug or device companies?
CMS Open Payments shows $10,343 in general payments to Dr. MacArthur from 41 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Kristin Loening MacArthur been practicing?
Dr. MacArthur graduated from medical school in 2010, 16 years ago.
Does Dr. Kristin Loening MacArthur do research?
Dmand AI links 6 publications to Dr. MacArthur, published from 2013 to 2018.
Who does Dr. Kristin Loening MacArthur publish with?
Dr. MacArthur's most frequent co-authors are Anna Leszczynski (2 shared papers), Tyler M. Berzin, MD (1 shared paper) and Steven D. Freedman, MD (1 shared paper).
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