Dr. Gregory M. Bolduc, MD
- Medicare services, 2024
- 939
- Medicare patients, 2024
- 608
- Part D claims, 2024
- 1,504
- MIPS score, 2024
- 20
- Hospital affiliations
- 2
- Practice address
- 1085 Main Street, South Weymouth, MA 02190
- Practice phone
- Call (781) 331-2922
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Weymouth Endoscopy
Surgery Center - Medicare-Certified · South Weymouth, Massachusetts
Find Dr. Bolduc'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. Gregory M. Bolduc is a gastroenterologist in South Weymouth, Massachusetts
Dr. Bolduc practices at Weymouth Endoscopy in South Weymouth, Massachusetts.
Dr. Bolduc's NPI, 1821078767, was assigned on January 18, 2006. Dr. Bolduc graduated from SUNY Upstate Medical University in 1991. Dr. Bolduc holds Massachusetts license 78133.
- NPI
- 1821078767NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890975759
- NPI enumeration date
- January 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (781) 331-2922
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory M. Bolduc practices at Weymouth Endoscopy in South Weymouth, Massachusetts
Dr. Bolduc's primary practice is Weymouth Endoscopy, at 1085 Main Street, South Weymouth, MA 02190. The practice phone is (781) 331-2922.
- Weymouth Endoscopy1085 Main Street, South Weymouth, MA 02190Phone(781) 331-2922
Source: Dmand AI Affiliation Data
Dr. Gregory M. Bolduc is affiliated with 6 sites of care and 3 medical groups
Dr. Bolduc's primary practice is Weymouth Endoscopy in South Weymouth, Massachusetts. Dr. Bolduc is also affiliated with South Shore Hospital. The medical group on file is South Shore Medical Center. Dmand AI also links Dr. Bolduc to 1 more hospital, 3 group practices and clinics and 2 medical groups, 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. Gregory M. Bolduc's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bolduc practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Weymouth Endoscopy | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory M. Bolduc is one of 597 gastroenterologists in Massachusetts
Gastroenterology is Dr. Bolduc's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Bolduc is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Bolduc's licenses on file in 2 states: Massachusetts and Virginia.
Specialties and state licenses
- Gastroenterology, MassachusettsPrimary
- Virginia license
Clinical focus
Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, gastroenteritis, gastrointestinal bleeding, irritable bowel syndrome (IBS) and pancreas or bile duct endoscopy (ERCP) among the conditions Dr. Bolduc treats.
Gastroenterologists near Dr. Bolduc
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. Gregory M. Bolduc billed Medicare for 939 services in 2024
CMS data shows 939 Medicare services from Dr. Bolduc across 12 procedure codes in 2024, for 608 Medicare patients. Medicare paid $102,703 for them.
Dr. Bolduc's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3372024: 43429%
- Surgery
- 2023: 4592024: 41410%
- Other services
- 2023: 892024: 912%
Where Dr. Bolduc's Medicare services took place, 2024
- In an office23024%
- In a facility70976%
Dr. Bolduc compared with the Massachusetts median for gastroenterologists, 2024
- Dr. Bolduc
- Massachusetts median
- Medicare services
- 939vs 51981% above
- Medicare patients
- 608vs 34377% above
- Part D claims
- 1,325vs 3004.4 times
Medians across 583 gastroenterologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Bolduc'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. Bolduc?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Bolduc and other gastroenterologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory M. Bolduc treated 608 Medicare patients in 2024, average age 74
CMS counts 608 Medicare patients who saw Dr. Bolduc in 2024. The largest group is 65 to 74, with 287 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Bolduc's median patient age at 61, with 53% women.
Dr. Bolduc's Medicare patients by age, 2024
Dr. Bolduc's Medicare patients by sex, 2024
- Women36159%
- Men24741%
Chronic conditions among Dr. Bolduc's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis47%
- Anxiety35%
- Mood disorders30%
- Chronic kidney disease26%
- Depression26%
- Ischemic heart disease26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Bolduc's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women53%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory M. Bolduc wrote 1,504 Medicare Part D claims in 2024
In 2024, Dr. Bolduc wrote 1,504 Medicare Part D claims for 301 patients. 86% of them were for generic drugs. CMS names the drug for 1,325 of them, across 26 drugs with 11 or more claims each, at $204,409 in total drug cost. In 2023, CMS named 1,247 claims across 27 drugs.
Dr. Bolduc's Part D claims by kind of drug, 2024
- Generic1,291 claims86%
- Brand-name and other213 claims14%
Dr. Bolduc'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. Bolduc's Part D claims, 2024
- Antibiotics1%19 of 1,504 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: 1,2472024: 1,3256%
Drugs named by CMS: 26 in 2024, 27 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. Gregory M. Bolduc scored 20 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 20 out of 100 for Dr. Bolduc for performance year 2024, reported individually. Dr. Bolduc accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Bolduc as offering telehealth. CMS counts 169 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Bolduc, more than 87% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Bolduc's MIPS scores, performance year 2024
- 20of 100Final score
- 0of 100Quality
- 0of 100Promoting Interoperability
- 0of 100Improvement Activities
- 66of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Bolduc ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 87th percentile169 procedures
- Colonoscopy
- 87th percentile138 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. Gregory M. Bolduc received $615 in industry payments from 2016 to 2025
CMS Open Payments shows 16 general payments to Dr. Bolduc from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Janssen Pharmaceuticals, Inc paid the most, $288.
General payments to Dr. Bolduc by program year, 2016 to 2025
General payments to Dr. Bolduc by kind, 2016 to 2025
- Food and beverage$60398%
- Education$122%
Companies that paid Dr. Bolduc 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. Gregory M. Bolduc has 1 award and honors on record
Dmand AI lists 1 award for Dr. Bolduc.
Awards and honors for Dr. Bolduc
- Undated
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. Gregory M. Bolduc graduated from SUNY Upstate Medical University
Dr. Bolduc graduated from SUNY Upstate Medical University in 1991.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Gregory M. Bolduc accepts plans from 12 insurance carriers
Dr. Bolduc is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Elevance
- Molina
- Regence Health Plans
- +4 more carriersWith a free account
Plan types Dr. Bolduc accepts, by number of carriers
- Medicare8
- PPO7
- HMO6
- EPO4
- POS3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory M. Bolduc'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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Gregory M. Bolduc
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. Gregory M. Bolduc's NPI number?
Dr. Gregory M. Bolduc's NPI number is 1821078767. It was assigned on January 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory M. Bolduc?
Dr. Gregory M. Bolduc is a gastroenterologist in South Weymouth, Massachusetts. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Gregory M. Bolduc practice?
Dr. Bolduc practices at 1085 Main Street, South Weymouth, MA 02190. Dr. Bolduc's primary practice is Weymouth Endoscopy in South Weymouth, Massachusetts. Dmand AI also links Dr. Bolduc to 1 hospital, 3 group practices and clinics and 2 medical groups.
What is Dr. Gregory M. Bolduc's office phone number?
The practice phone on file for Dr. Bolduc is (781) 331-2922.
What is Dr. Gregory M. Bolduc's medical license number?
Dr. Bolduc holds Massachusetts license 78133, one of the licenses on file in 2 states.
Which states has Dr. Gregory M. Bolduc been licensed in?
Dmand AI has state licenses on file for Dr. Bolduc in Massachusetts (1993 to 2026) and Virginia (1997 to 2026).
Which hospitals is Dr. Gregory M. Bolduc affiliated with?
Dr. Bolduc is affiliated with South Shore Hospital. Dmand AI links Dr. Bolduc to 1 more hospital.
What medical group is Dr. Gregory M. Bolduc part of?
Dr. Bolduc is linked to South Shore Medical Center. Dmand AI links Dr. Bolduc to 2 more medical groups.
Does Dr. Gregory M. Bolduc accept Medicare?
Yes. CMS data shows Dr. Bolduc billed Medicare for 939 services in 2024, and Dr. Bolduc accepts Medicare assignment.
Does Dr. Gregory M. Bolduc offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Bolduc as offering telehealth services.
Show 9 more questionsShow fewer questions
What is Dr. Gregory M. Bolduc's MIPS score?
Dr. Bolduc's MIPS final score for performance year 2024 is 20 out of 100, reported individually.
How many Medicare patients does Dr. Gregory M. Bolduc see?
CMS counts 608 Medicare patients who saw Dr. Bolduc in 2024, with an average age of 74.
Is Dr. Gregory M. Bolduc board certified?
Yes. Dr. Bolduc is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Gregory M. Bolduc bill to Medicare?
In 2024, Dr. Bolduc's most billed Medicare services were surgery: digestive system (45385), office visit, established patient (99213) and hospital inpatient care (99232).
Where did Dr. Gregory M. Bolduc go to medical school?
Dr. Bolduc graduated from SUNY Upstate Medical University in 1991.
What drugs does Dr. Gregory M. Bolduc prescribe most?
In 2024 Medicare Part D data, Dr. Bolduc's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Dicyclomine HCl.
Has Dr. Gregory M. Bolduc received payments from drug or device companies?
CMS Open Payments shows $615 in general payments to Dr. Bolduc from 8 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Gregory M. Bolduc been practicing?
Dr. Bolduc graduated from medical school in 1991, 35 years ago.
What insurance does Dr. Gregory M. Bolduc accept?
Dr. Bolduc is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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