Dr. Brett A. Hassan, MD
- Medicare services, 2024
- 1,179
- Medicare patients, 2024
- 545
- Part D claims, 2024
- 649
- MIPS score, 2024
- 75
- Hospital affiliations
- 2
- Practice address
- 14 Prospect Street, Milford, MA 01757
- Practice phone
- Call (508) 473-1190
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Hassan's professional email, personal email and mobile number
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Dr. Brett A. Hassan is a gastroenterologist in Milford, Massachusetts
Dr. Hassan practices at UMass Memorial Health - Milford Regional Medical Center in Milford, Massachusetts, part of UMass Memorial Health Care.
Dr. Hassan's NPI, 1376679761, was assigned on February 27, 2007. Dr. Hassan graduated from University of Massachusetts Medical School in 2006. Dr. Hassan holds Massachusetts license 238133.
- NPI
- 1376679761NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951557867
- NPI enumeration date
- February 27, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 473-1190
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brett A. Hassan practices at UMass Memorial Health - Milford Regional Medical Center in Milford, Massachusetts
Dr. Hassan's primary practice is UMass Memorial Health - Milford Regional Medical Center, at 14 Prospect Street, Milford, MA 01757 in Worcester County. The practice phone is (508) 473-1190.
- UMass Memorial Health - Milford Regional Medical Center14 Prospect Street, Milford, MA 01757 · Worcester CountyPhone(508) 473-1190
Source: Dmand AI Affiliation Data
Dr. Brett A. Hassan is affiliated with 5 sites of care and 2 medical groups
Dr. Hassan's primary practice is UMass Memorial Health - Milford Regional Medical Center in Milford, Massachusetts, part of UMass Memorial Health Care. Dr. Hassan is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Hassan to 2 more group practices and clinics, 1 imaging 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. Brett A. Hassan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hassan practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UMass Memorial Health - Milford Regional Medical Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brett A. Hassan is one of 597 gastroenterologists in Massachusetts
Gastroenterology is Dr. Hassan's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Hassan is licensed in Massachusetts.
Specialties and state licenses
- Gastroenterology, MassachusettsPrimary
Gastroenterologists near Dr. Hassan
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. Brett A. Hassan billed Medicare for 1,179 services in 2024
CMS data shows 1,179 Medicare services from Dr. Hassan across 12 procedure codes in 2024, for 545 Medicare patients. Medicare paid $101,057 for them.
Dr. Hassan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9722024: 84413%
- Surgery
- 2023: 3692024: 32213%
- Tests and treatments
- 2023: 02024: 13
Where Dr. Hassan's Medicare services took place, 2024
- In an office32528%
- In a facility85472%
Dr. Hassan compared with the Massachusetts median for gastroenterologists, 2024
- Dr. Hassan
- Massachusetts median
- Medicare services
- 1,179vs 5192.3 times
- Medicare patients
- 545vs 34359% above
- Part D claims
- 486vs 30062% above
Medians across 583 gastroenterologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Hassan'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.
Need commercial claims for Dr. Hassan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hassan and other gastroenterologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brett A. Hassan treated 545 Medicare patients in 2024, average age 74
CMS counts 545 Medicare patients who saw Dr. Hassan in 2024. The largest group is 65 to 74, with 233 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hassan's median patient age at 63, with 51% women.
Dr. Hassan's Medicare patients by age, 2024
Dr. Hassan's Medicare patients by sex, 2024
- Women32660%
- Men21940%
Chronic conditions among Dr. Hassan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Anxiety35%
- Mood disorders34%
- Depression31%
- Ischemic heart disease29%
- Chronic kidney disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hassan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brett A. Hassan wrote 649 Medicare Part D claims in 2024
In 2024, Dr. Hassan wrote 649 Medicare Part D claims for 175 patients. 80% of them were for generic drugs. CMS names the drug for 486 of them, across 10 drugs with 11 or more claims each, at $101,601 in total drug cost. In 2023, CMS named 437 claims across 10 drugs.
Dr. Hassan's Part D claims by kind of drug, 2024
- Generic520 claims80%
- Brand-name129 claims20%
Dr. Hassan'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. Hassan's Part D claims, 2024
- Antibiotics2%11 of 649 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: 4372024: 48611%
Drugs named by CMS: 10 in 2024, 10 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. Brett A. Hassan scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Hassan for performance year 2024, reported as part of a group. Dr. Hassan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 244 procedures of colonoscopy by Dr. Hassan, more than 96% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Where Dr. Hassan ranks in Medicare procedure volume
- Colonoscopy
- 96th percentile244 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 83rd percentile136 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Brett A. Hassan received $7,358 in industry payments from 2016 to 2025
CMS Open Payments shows 356 general payments to Dr. Hassan from 37 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, $3,459.
General payments to Dr. Hassan by program year, 2016 to 2025
Companies that paid Dr. Hassan 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. Brett A. Hassan graduated from University of Massachusetts Medical School
Dr. Hassan graduated from University of Massachusetts Medical School in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brett A. Hassan'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)Clinician Public Reporting: Overall MIPS Performance (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. Brett A. Hassan
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. Brett A. Hassan's NPI number?
Dr. Brett A. Hassan's NPI number is 1376679761. It was assigned on February 27, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Brett A. Hassan?
Dr. Brett A. Hassan is a gastroenterologist in Milford, Massachusetts. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Brett A. Hassan practice?
Dr. Hassan practices at 14 Prospect Street, Milford, MA 01757. Dr. Hassan's primary practice is UMass Memorial Health - Milford Regional Medical Center in Milford, Massachusetts, part of UMass Memorial Health Care. Dmand AI also links Dr. Hassan to 2 group practices and clinics, 1 imaging center and 1 medical group.
What is Dr. Brett A. Hassan's office phone number?
The practice phone on file for Dr. Hassan is (508) 473-1190.
What is Dr. Brett A. Hassan's medical license number?
Dr. Hassan holds Massachusetts license 238133.
Which hospitals is Dr. Brett A. Hassan affiliated with?
Dr. Hassan practices at UMass Memorial Health - Milford Regional Medical Center in Milford, Massachusetts. Dr. Hassan is also affiliated with UMass Memorial Medical Center - University Campus.
What medical group is Dr. Brett A. Hassan part of?
Dr. Hassan is linked to UMass Memorial Medical Group. Dmand AI links Dr. Hassan to 1 more medical group.
Does Dr. Brett A. Hassan accept Medicare?
Yes. CMS data shows Dr. Hassan billed Medicare for 1,179 services in 2024, and Dr. Hassan accepts Medicare assignment.
What is Dr. Brett A. Hassan's MIPS score?
Dr. Hassan's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. Brett A. Hassan see?
CMS counts 545 Medicare patients who saw Dr. Hassan in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Brett A. Hassan bill to Medicare?
In 2024, Dr. Hassan's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99212) and hospital inpatient care (99232).
Where did Dr. Brett A. Hassan go to medical school?
Dr. Hassan graduated from University of Massachusetts Medical School in 2006.
What drugs does Dr. Brett A. Hassan prescribe most?
In 2024 Medicare Part D data, Dr. Hassan's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Linzess.
Has Dr. Brett A. Hassan received payments from drug or device companies?
CMS Open Payments shows $7,358 in general payments to Dr. Hassan from 37 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Brett A. Hassan been practicing?
Dr. Hassan graduated from medical school in 2006, 20 years ago.
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