$3,770 in research paymentsEosinophilic EsophagitisEsophagitisDupilumab
Dr. Yehudith Assouline-Dayan, MD
NPI1093141228PAC ID6002043957
- Medicare services, 2024
- 838
- Medicare patients, 2024
- 367
- Part D claims, 2024
- 506
- Clinical trials
- 2
- Hospital affiliations
- 6
- Practice address
- 1 Park Way, Haverhill, MA 01830
- Practice phone
- Call (978) 521-3235
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Merrimack Valley Endoscopy Center
Haverhill, Massachusetts
Find Dr. Assouline-Dayan'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. Yehudith Assouline-Dayan is a gastroenterologist in Haverhill, Massachusetts
Dr. Assouline-Dayan practices at Merrimack Valley Endoscopy Center in Haverhill, Massachusetts.
Dr. Assouline-Dayan's NPI, 1093141228, was assigned on September 19, 2013. Dr. Assouline-Dayan holds Iowa license SP-213.
NPI and contact details
- NPI
- 1093141228NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002043957
- NPI enumeration date
- September 19, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 521-3235
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Yehudith Assouline-Dayan practices at Merrimack Valley Endoscopy Center in Haverhill, Massachusetts
Dr. Assouline-Dayan's primary practice is Merrimack Valley Endoscopy Center, at 1 Park Way, Haverhill, MA 01830 in Essex County. The practice phone is (978) 521-3235.
- Merrimack Valley Endoscopy Center1 Park Way, Haverhill, MA 01830 · Essex CountyPhone(978) 521-3235
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Yehudith Assouline-Dayan is affiliated with 9 sites of care and 3 medical groups
Dr. Assouline-Dayan's primary practice is Merrimack Valley Endoscopy Center in Haverhill, Massachusetts. Dr. Assouline-Dayan is also affiliated with University of Iowa Health Care Medical Center. The medical group on file is Mass General Brigham (formerly North Shore Physicians Group). Dmand AI also links Dr. Assouline-Dayan to 5 more hospitals, 2 medical groups, 1 group practice or clinic and 1 ambulatory surgery center, each named with a free account.
Merrimack Valley Endoscopy CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Yehudith Assouline-Dayan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Assouline-Dayan practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Merrimack Valley Endoscopy Center | Available with a free account |
| +8 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Yehudith Assouline-Dayan is one of 597 gastroenterologists in Massachusetts
Gastroenterology is Dr. Assouline-Dayan's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Assouline-Dayan is licensed in Iowa.
Specialties and state licenses
- Gastroenterology, IowaPrimary
Gastroenterologists near Dr. Assouline-Dayan
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
597gastroenterologists in Massachusetts
3gastroenterologists in Haverhill
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Yehudith Assouline-Dayan billed Medicare for 838 services in 2024
CMS data shows 838 Medicare services from Dr. Assouline-Dayan across 13 procedure codes in 2024, for 367 Medicare patients. Medicare paid $72,577 for them.
Medicare services, 2024838
Medicare patients367
Paid by Medicare$72,577
Procedure codes13
Dr. Assouline-Dayan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 3832024: 382No change
- Surgery
- 2023: 2752024: 2711%
- Office and hospital visits
- 2023: 2052024: 14131%
- Other services
- 2023: 482024: 448%
Where Dr. Assouline-Dayan's Medicare services took place, 2024
- In an office46856%
- In a facility37044%
Dr. Assouline-Dayan compared with the Massachusetts median for gastroenterologists, 2024
- Dr. Assouline-Dayan
- Massachusetts median
- Medicare services
- 838vs 51961% above
- Medicare patients
- 367vs 3437% above
- Part D claims
- 350vs 30017% above
Medians across 583 gastroenterologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Assouline-Dayan'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. Yehudith Assouline-Dayan treated 367 Medicare patients in 2024, average age 71
CMS counts 367 Medicare patients who saw Dr. Assouline-Dayan in 2024. The largest group is 65 to 74, with 171 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 34% are also on Medicaid. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Assouline-Dayan's median patient age at 64, with 61% women.
Medicare patients, 2024367
Average age71
Average risk score1.19
Also on Medicaid34%
Dr. Assouline-Dayan's Medicare patients by age, 2024
Dr. Assouline-Dayan's Medicare patients by sex, 2024
- Women22962%
- Men13838%
Chronic conditions among Dr. Assouline-Dayan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis46%
- Anxiety37%
- Mood disorders34%
- Depression30%
- Diabetes28%
- Chronic kidney disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Assouline-Dayan'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
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Yehudith Assouline-Dayan wrote 506 Medicare Part D claims in 2024
In 2024, Dr. Assouline-Dayan wrote 506 Medicare Part D claims for 142 patients. 81% of them were for generic drugs. CMS names the drug for 350 of them, across 14 drugs with 11 or more claims each, at $158,733 in total drug cost. In 2023, CMS named 380 claims across 14 drugs.
Part D claims, 2024506
Drugs named by CMS14
Total drug cost$158,733
Part D patients142
Dr. Assouline-Dayan's Part D claims by kind of drug, 2024
- Generic411 claims81%
- Brand-name95 claims19%
Dr. Assouline-Dayan'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. Assouline-Dayan's Part D claims, 2024
- Antibiotics10%52 of 506 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: 3802024: 3508%
Drugs named by CMS: 14 in 2024, 14 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. Yehudith Assouline-Dayan ranks in the 87th percentile for colonoscopy in Medicare
Dr. Assouline-Dayan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 136 procedures of colonoscopy by Dr. Assouline-Dayan, more than 87% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Assouline-Dayan ranks in Medicare procedure volume
- Colonoscopy
- 87th percentile136 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 80th percentile121 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. Yehudith Assouline-Dayan has worked on 2 clinical trials
Dmand AI links Dr. Assouline-Dayan to 2 clinical trials. Conditions studied include Eosinophilic Esophagitis and Esophagitis. Regeneron Pharmaceuticals sponsors the most, 2. Open Payments lists research payments to Dr. Assouline-Dayan that name 2 trials.
Conditions in Dr. Assouline-Dayan's trials
- Eosinophilic Esophagitis
- Esophagitis
Investigators on the most trials with Dr. Assouline-Dayan
- Mirna Chehade, MD2 shared trials
- Margaret H. Collins, MD2 shared trials
- Evan S. Dellon, MD, MPH2 shared trials
Recent clinical trials with Dr. Assouline-Dayan
$1,197 in research paymentsEosinophilic EsophagitisEsophagitisDupilumab
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Yehudith Assouline-Dayan received $1,469 in industry payments from 2018 to 2023
CMS Open Payments shows 10 general payments to Dr. Assouline-Dayan from 5 drug and device companies from 2018 to 2023. Travel and lodging make up the largest share, 68% of the total. Adare Pharmaceuticals, Inc. paid the most, $1,315. It also lists 25 research payments totaling $10,206 from 2017 to 2020, naming 2 clinical trials.
General payments to Dr. Assouline-Dayan by program year, 2018 to 2023
General payments to Dr. Assouline-Dayan by kind, 2018 to 2023
$1.5Kin total
- Travel and lodging$99268%
- Food and beverage$47732%
Companies that paid Dr. Assouline-Dayan the most, 2018 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Yehudith Assouline-Dayan's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Yehudith Assouline-Dayan
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. Yehudith Assouline-Dayan's NPI number?
Dr. Yehudith Assouline-Dayan's NPI number is 1093141228. It was assigned on September 19, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Yehudith Assouline-Dayan?
Dr. Yehudith Assouline-Dayan is a gastroenterologist in Haverhill, Massachusetts. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Yehudith Assouline-Dayan practice?
Dr. Assouline-Dayan practices at 1 Park Way, Haverhill, MA 01830. Dr. Assouline-Dayan's primary practice is Merrimack Valley Endoscopy Center in Haverhill, Massachusetts. Dmand AI also links Dr. Assouline-Dayan to 5 hospitals, 2 medical groups, 1 group practice or clinic and 1 ambulatory surgery center.
What is Dr. Yehudith Assouline-Dayan's office phone number?
The practice phone on file for Dr. Assouline-Dayan is (978) 521-3235.
What is Dr. Yehudith Assouline-Dayan's medical license number?
Dr. Assouline-Dayan holds Iowa license SP-213.
Which hospitals is Dr. Yehudith Assouline-Dayan affiliated with?
Dr. Assouline-Dayan is affiliated with University of Iowa Health Care Medical Center. Dmand AI links Dr. Assouline-Dayan to 5 more hospitals.
What medical group is Dr. Yehudith Assouline-Dayan part of?
Dr. Assouline-Dayan is linked to Mass General Brigham (formerly North Shore Physicians Group). Dmand AI links Dr. Assouline-Dayan to 2 more medical groups.
Does Dr. Yehudith Assouline-Dayan accept Medicare?
Yes. CMS data shows Dr. Assouline-Dayan billed Medicare for 838 services in 2024, and Dr. Assouline-Dayan accepts Medicare assignment.
How many Medicare patients does Dr. Yehudith Assouline-Dayan see?
CMS counts 367 Medicare patients who saw Dr. Assouline-Dayan in 2024, with an average age of 71.
What services does Dr. Yehudith Assouline-Dayan bill to Medicare?
In 2024, Dr. Assouline-Dayan's most billed Medicare services were lab and pathology test (88305), surgery: digestive system (45385) and surgery: digestive system (43239).
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What drugs does Dr. Yehudith Assouline-Dayan prescribe most?
In 2024 Medicare Part D data, Dr. Assouline-Dayan's most prescribed drugs by claims were Omeprazole, Linzess and Pantoprazole Sodium.
Has Dr. Yehudith Assouline-Dayan received payments from drug or device companies?
CMS Open Payments shows $1,469 in general payments to Dr. Assouline-Dayan from 5 companies from 2018 to 2023. The largest total came from Adare Pharmaceuticals, Inc.
How long has Dr. Yehudith Assouline-Dayan been practicing?
Dr. Assouline-Dayan graduated from medical school in 1996, 30 years ago.
Does Dr. Yehudith Assouline-Dayan do research?
Dr. Assouline-Dayan has worked on 2 clinical trials.
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