Dr. Jeffrey S. Gelwan, MD
- Medicare services, 2023
- 201
- Part D claims, 2024
- 102
- Industry payments
- $7,208
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 300 Western Blvd, Glastonbury, CT 06033
- Practice phone
- Call (860) 657-1920
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hartford Healthcare Medical Group Specialists - Glastonbury (300 Western Blvd)
Primary care practice · Glastonbury, Connecticut
Find Dr. Gelwan's professional email, personal email and mobile number
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Dr. Jeffrey S. Gelwan is a gastroenterologist in Hartford, Connecticut
Dr. Gelwan practices at Hartford Healthcare Medical Group Specialists - Glastonbury (300 Western Blvd) in Glastonbury, Connecticut.
Dr. Gelwan's NPI, 1619071230, was assigned on September 12, 2006. Dr. Gelwan graduated from State University of New York Downstate Medical Center in 1981. Dr. Gelwan holds Connecticut license 024826.
- NPI
- 1619071230NPI Registry (opens in a new tab)
- NPI enumeration date
- September 12, 2006
- NPI status
- Active
- Practice phone
- (860) 657-1920
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jeffrey S. Gelwan practices in Glastonbury and Hartford
Dr. Gelwan's primary practice is Hartford Healthcare Medical Group Specialists - Glastonbury (300 Western Blvd), at 300 Western Blvd, Glastonbury, CT 06033. The practice phone is (860) 657-1920. The NPI Registry lists Dr. Gelwan's practice address as 80 Seymour St, Hartford, CT 06106.
- Hartford Healthcare Medical Group Specialists - Glastonbury (300 Western Blvd)Primary300 Western Blvd, Glastonbury, CT 06033Phone(860) 657-1920
- NPI Registry address80 Seymour St, Hartford, CT 06106 · Capitol CountyPhone(860) 657-1920
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Jeffrey S. Gelwan is affiliated with 2 sites of care and 2 medical groups
Dr. Gelwan's primary practice is Hartford Healthcare Medical Group Specialists - Glastonbury (300 Western Blvd) in Glastonbury, Connecticut. The medical group on file is Connecticut GI. Dmand AI also links Dr. Gelwan to 1 more ambulatory surgery center and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Jeffrey S. Gelwan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gelwan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hartford Healthcare Medical Group Specialists - Glastonbury (300 Western Blvd) | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jeffrey S. Gelwan is one of 298 gastroenterologists in Connecticut
Gastroenterology is Dr. Gelwan's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Gelwan is licensed in Connecticut.
Specialties and state licenses
- Gastroenterology, ConnecticutPrimary
Gastroenterologists near Dr. Gelwan
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. Jeffrey S. Gelwan billed Medicare for 201 services in 2023
CMS data shows 201 Medicare services from Dr. Gelwan across 5 procedure codes in 2023. Medicare paid $18,585 for them.
Dr. Gelwan's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 1862023: 9350%
- Surgery
- 2022: 2102023: 7962%
- Drugs given in the office
- 2022: 242023: 1729%
- Other services
- 2022: 162023: 1225%
- Tests and treatments
- 2022: 292023: 0100%
Where Dr. Gelwan's Medicare services took place, 2023
- In an office11055%
- In a facility9145%
Dr. Gelwan compared with the Connecticut median for gastroenterologists, 2023
- Dr. Gelwan
- Connecticut median
- Medicare services
- 201vs 36144% below
- Part D claims
- 28vs 53895% below
Medians across 284 gastroenterologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Gelwan's most billed Medicare procedure codes, 2023
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. Gelwan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gelwan and other gastroenterologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jeffrey S. Gelwan's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Gelwan's median patient age at 63, with 38% women.
Dr. Gelwan'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
- Women38%
- Men61%
Source: Dmand AI Patient Panel Data
Dr. Jeffrey S. Gelwan wrote 102 Medicare Part D claims in 2024
In 2024, Dr. Gelwan wrote 102 Medicare Part D claims for 45 patients. 90% of them were for generic drugs. CMS names the drug for 28 of them, across 2 drugs with 11 or more claims each, at $629 in total drug cost. In 2023, CMS named 888 claims across 14 drugs.
Dr. Gelwan's Part D claims by kind of drug, 2024
- Generic92 claims90%
- Brand-name and other10 claims10%
Dr. Gelwan'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8882024: 2897%
Drugs named by CMS: 2 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
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Dr. Jeffrey S. Gelwan received $7,208 in industry payments from 2016 to 2024
CMS Open Payments shows 481 general payments to Dr. Gelwan from 30 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $1,821.
General payments to Dr. Gelwan by program year, 2016 to 2024
General payments to Dr. Gelwan by kind, 2016 to 2024
- Food and beverage$7,10599%
- Education$891%
- Consulting fees$140%
Companies that paid Dr. Gelwan the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jeffrey S. Gelwan graduated from State University of New York Downstate Medical Center
Dr. Gelwan graduated from State University of New York Downstate Medical Center in 1981.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jeffrey S. Gelwan'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| 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) |
| 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. Jeffrey S. Gelwan
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. Jeffrey S. Gelwan's NPI number?
Dr. Jeffrey S. Gelwan's NPI number is 1619071230. It was assigned on September 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffrey S. Gelwan?
Dr. Jeffrey S. Gelwan is a gastroenterologist in Hartford, Connecticut. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Jeffrey S. Gelwan practice?
Dr. Gelwan practices at 300 Western Blvd, Glastonbury, CT 06033. Dr. Gelwan also practices at 80 Seymour St, Hartford, CT 06106. Dr. Gelwan's primary practice is Hartford Healthcare Medical Group Specialists - Glastonbury (300 Western Blvd) in Glastonbury, Connecticut. Dmand AI also links Dr. Gelwan to 1 ambulatory surgery center and 1 medical group.
What is Dr. Jeffrey S. Gelwan's office phone number?
The practice phone on file for Dr. Gelwan is (860) 657-1920.
What is Dr. Jeffrey S. Gelwan's medical license number?
Dr. Gelwan holds Connecticut license 024826.
What medical group is Dr. Jeffrey S. Gelwan part of?
Dr. Gelwan is linked to Connecticut GI. Dmand AI links Dr. Gelwan to 1 more medical group.
Does Dr. Jeffrey S. Gelwan accept Medicare?
Yes. CMS data shows Dr. Gelwan billed Medicare for 201 services in 2023.
What services does Dr. Jeffrey S. Gelwan bill to Medicare?
In 2023, Dr. Gelwan's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (43239) and surgery: digestive system (45380).
Where did Dr. Jeffrey S. Gelwan go to medical school?
Dr. Gelwan graduated from State University of New York Downstate Medical Center in 1981.
What drugs does Dr. Jeffrey S. Gelwan prescribe most?
In 2024 Medicare Part D data, Dr. Gelwan's most prescribed drugs by claims were Omeprazole and Pantoprazole Sodium.
Has Dr. Jeffrey S. Gelwan received payments from drug or device companies?
CMS Open Payments shows $7,208 in general payments to Dr. Gelwan from 30 companies from 2016 to 2024. The largest total came from Abbvie Inc.
How long has Dr. Jeffrey S. Gelwan been practicing?
Dr. Gelwan graduated from medical school in 1981, 45 years ago.
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