Dr. Jeffrey T. Dreznick, MD
- Medicare services, 2024
- 159
- Medicare patients, 2024
- 128
- Part D claims, 2024
- 1,373
- Hospital affiliations
- 1
- Industry payments
- $3,991
- Practice address
- 130 Division St, Derby, CT 06418
- Practice phone
- Call (203) 732-7500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Dreznick's professional email, personal email and mobile number
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Dr. Jeffrey T. Dreznick is a gastroenterologist in Derby, Connecticut
Dr. Dreznick practices at Griffin Hospital in Derby, Connecticut, part of Griffin Hospital.
Dr. Dreznick's NPI, 1902895436, was assigned on October 18, 2005. Dr. Dreznick graduated from Icahn School of Medicine at Mount Sinai in 1984. Dr. Dreznick holds Connecticut license 028004.
- NPI
- 1902895436NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739260928
- NPI enumeration date
- October 18, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 732-7500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jeffrey T. Dreznick practices at 2 locations in Derby, Connecticut
Dr. Dreznick's primary practice is Griffin Hospital, at 130 Division St, Derby, CT 06418 in New Haven County. The practice phone is (203) 732-7500. Dr. Dreznick also practices at Griffin Hospital, 144 Division St, Derby, CT 06418.
- Griffin HospitalPrimary130 Division St, Derby, CT 06418 · New Haven CountyPhone(203) 732-7500
- Griffin Hospital144 Division St, Derby, CT 06418 · Naugatuck Vly CountyPhone(203) 732-7360
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Jeffrey T. Dreznick is affiliated with 3 sites of care and 2 medical groups
Dr. Dreznick's primary practice is Griffin Hospital in Derby, Connecticut, part of Griffin Hospital. The medical group on file is Griffin Faculty Physicians. Dmand AI also links Dr. Dreznick to 2 more group practices and clinics 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. Jeffrey T. Dreznick's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dreznick practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Griffin Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Griffin Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jeffrey T. Dreznick is one of 298 gastroenterologists in Connecticut
Gastroenterology is Dr. Dreznick's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Dreznick is licensed in Connecticut.
Specialties and state licenses
- Gastroenterology, ConnecticutPrimary
Gastroenterologists near Dr. Dreznick
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 T. Dreznick billed Medicare for 159 services in 2024
CMS data shows 159 Medicare services from Dr. Dreznick across 8 procedure codes in 2024, for 128 Medicare patients. Medicare paid $19,116 for them.
Dr. Dreznick's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 862024: 807%
- Office and hospital visits
- 2023: 732024: 4933%
- Other services
- 2023: 02024: 30
Where Dr. Dreznick's Medicare services took place, 2024
- In an office4730%
- In a facility11270%
Dr. Dreznick compared with the Connecticut median for gastroenterologists, 2024
- Dr. Dreznick
- Connecticut median
- Medicare services
- 159vs 36156% below
- Medicare patients
- 128vs 25349% below
- Part D claims
- 1,210vs 5382.2 times
Medians across 284 gastroenterologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Dreznick'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dreznick and other gastroenterologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jeffrey T. Dreznick treated 128 Medicare patients in 2024, average age 73
CMS counts 128 Medicare patients who saw Dr. Dreznick in 2024. The largest group is 65 to 74, with 65 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Dreznick's median patient age at 63, with 49% women.
Dr. Dreznick's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Dreznick's Medicare patients by sex, 2024
- Women6853%
- Men6047%
Chronic conditions among Dr. Dreznick's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Ischemic heart disease30%
- Anxiety29%
- Diabetes25%
- Mood disorders24%
- Cancer22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dreznick'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
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jeffrey T. Dreznick wrote 1,373 Medicare Part D claims in 2024
In 2024, Dr. Dreznick wrote 1,373 Medicare Part D claims for 435 patients. 86% of them were for generic drugs. CMS names the drug for 1,210 of them, across 19 drugs with 11 or more claims each, at $296,381 in total drug cost. In 2023, CMS named 1,185 claims across 24 drugs.
Dr. Dreznick's Part D claims by kind of drug, 2024
- Generic1,179 claims86%
- Brand-name194 claims14%
Dr. Dreznick'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. Dreznick's Part D claims, 2024
- Antibiotics1%18 of 1,373 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: 1,1852024: 1,2102%
Drugs named by CMS: 19 in 2024, 24 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. Jeffrey T. Dreznick scored 0 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 0 out of 100 for Dr. Dreznick for performance year 2024, reported as part of a group. Dr. Dreznick accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 22 procedures of colonoscopy by Dr. Dreznick, more than 49% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Dreznick's MIPS scores, performance year 2024
- 0of 100Final score
- 0of 100Quality
- 0of 100Promoting Interoperability
- 0of 100Improvement Activities
- 0of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Dreznick ranks in Medicare procedure volume
- Colonoscopy
- 49th percentile22 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 45th percentile14 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. Jeffrey T. Dreznick received $3,991 in industry payments from 2016 to 2025
CMS Open Payments shows 224 general payments to Dr. Dreznick from 28 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, $787.
General payments to Dr. Dreznick by program year, 2016 to 2025
General payments to Dr. Dreznick by kind, 2016 to 2025
- Food and beverage$3,971100%
- Education$200%
Companies that paid Dr. Dreznick 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. Jeffrey T. Dreznick graduated from Icahn School of Medicine at Mount Sinai
Dr. Dreznick graduated from Icahn School of Medicine at Mount Sinai in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jeffrey T. Dreznick'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 DataDmand AI Practice 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. Jeffrey T. Dreznick
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 T. Dreznick's NPI number?
Dr. Jeffrey T. Dreznick's NPI number is 1902895436. It was assigned on October 18, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffrey T. Dreznick?
Dr. Jeffrey T. Dreznick is a gastroenterologist in Derby, Connecticut. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Jeffrey T. Dreznick practice?
Dr. Dreznick practices at 130 Division St, Derby, CT 06418. Dr. Dreznick also practices at 144 Division St, Derby, CT 06418. Dr. Dreznick's primary practice is Griffin Hospital in Derby, Connecticut, part of Griffin Hospital. Dmand AI also links Dr. Dreznick to 2 group practices and clinics and 1 medical group.
What is Dr. Jeffrey T. Dreznick's office phone number?
The practice phone on file for Dr. Dreznick is (203) 732-7500.
What is Dr. Jeffrey T. Dreznick's medical license number?
Dr. Dreznick holds Connecticut license 028004.
Which hospitals is Dr. Jeffrey T. Dreznick affiliated with?
Dr. Dreznick practices at Griffin Hospital in Derby, Connecticut.
What medical group is Dr. Jeffrey T. Dreznick part of?
Dr. Dreznick is linked to Griffin Faculty Physicians. Dmand AI links Dr. Dreznick to 1 more medical group.
Does Dr. Jeffrey T. Dreznick accept Medicare?
Yes. CMS data shows Dr. Dreznick billed Medicare for 159 services in 2024, and Dr. Dreznick accepts Medicare assignment.
What is Dr. Jeffrey T. Dreznick's MIPS score?
Dr. Dreznick's MIPS final score for performance year 2024 is 0 out of 100, reported as part of a group.
How many Medicare patients does Dr. Jeffrey T. Dreznick see?
CMS counts 128 Medicare patients who saw Dr. Dreznick in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. Jeffrey T. Dreznick bill to Medicare?
In 2024, Dr. Dreznick's most billed Medicare services were surgery: digestive system (45380), surgery: digestive system (43239) and hospital inpatient care (99223).
Where did Dr. Jeffrey T. Dreznick go to medical school?
Dr. Dreznick graduated from Icahn School of Medicine at Mount Sinai in 1984.
What drugs does Dr. Jeffrey T. Dreznick prescribe most?
In 2024 Medicare Part D data, Dr. Dreznick's most prescribed drugs by claims were Famotidine, Pantoprazole Sodium and Ondansetron HCl.
Has Dr. Jeffrey T. Dreznick received payments from drug or device companies?
CMS Open Payments shows $3,991 in general payments to Dr. Dreznick from 28 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Jeffrey T. Dreznick been practicing?
Dr. Dreznick graduated from medical school in 1984, 42 years ago.
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