Dr. Terrence William Dempsey, MD
- Medicare services, 2024
- 316
- Medicare patients, 2024
- 186
- Part D claims, 2024
- 206
- Hospital affiliations
- 4
- Industry payments
- $15,084
- Practice address
- 9660 Wicker Ave, Saint John, IN 46373
- Practice phone
- Call (219) 365-7620
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Powers Health Medical Group
Saint John, Indiana
Find Dr. Dempsey'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. Terrence William Dempsey is a general surgeon in Saint John, Indiana
Dr. Dempsey practices at Powers Health Medical Group in Saint John, Indiana.
Dr. Dempsey's NPI, 1477577690, was assigned on July 27, 2006. Dr. Dempsey graduated from Loyola University of Chicago, Stritch School of Medicine in 1992. Dr. Dempsey holds Indiana license 01052760A.
- NPI
- 1477577690NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234232133
- NPI enumeration date
- July 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (219) 365-7620
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Terrence William Dempsey practices at Powers Health Medical Group in Saint John, Indiana
Dr. Dempsey's primary practice is Powers Health Medical Group, at 9660 Wicker Ave, Saint John, IN 46373 in Lake County. The practice phone is (219) 365-7620.
- Powers Health Medical Group9660 Wicker Ave, Saint John, IN 46373 · Lake CountyPhone(219) 365-7620
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Terrence William Dempsey is affiliated with 7 sites of care and 2 medical groups
Dr. Dempsey's primary practice is Powers Health Medical Group in Saint John, Indiana. Dr. Dempsey is also affiliated with Community Hospital. The medical group on file is Powers Health Medical Group. Dmand AI also links Dr. Dempsey to 3 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Terrence William Dempsey's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dempsey practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Powers Health Medical Group | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Terrence William Dempsey is one of 530 general surgeons in Indiana
Surgery is Dr. Dempsey's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Dempsey is licensed in Indiana.
Specialties and state licenses
- Surgery, IndianaPrimary
General surgeons near Dr. Dempsey
Counts of general surgeons 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. Terrence William Dempsey billed Medicare for 316 services in 2024
CMS data shows 316 Medicare services from Dr. Dempsey across 11 procedure codes in 2024, for 186 Medicare patients. Medicare paid $35,351 for them.
Dr. Dempsey's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2932024: 26410%
- Surgery
- 2023: 792024: 3951%
- Other services
- 2023: 142024: 137%
Where Dr. Dempsey's Medicare services took place, 2024
- In an office15950%
- In a facility15750%
Dr. Dempsey compared with the Indiana median for general surgeons, 2024
- Dr. Dempsey
- Indiana median
- Medicare services
- 316vs 1562.0 times
- Medicare patients
- 186vs 13142% above
- Part D claims
- 158vs 404.0 times
Medians across 526 general surgeons in Indiana with Dmand AI profiles that report each measure.
Dr. Dempsey'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. Dempsey?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dempsey and other general surgeons in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Terrence William Dempsey treated 186 Medicare patients in 2024, average age 75
CMS counts 186 Medicare patients who saw Dr. Dempsey in 2024. The largest group is 65 to 74, with 78 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.61, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Dempsey's median patient age at 65, with 47% women.
Dr. Dempsey's Medicare patients by age, 2024
Dr. Dempsey's Medicare patients by sex, 2024
- Women9652%
- Men9048%
Chronic conditions among Dr. Dempsey's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Cancer38%
- Ischemic heart disease36%
- Diabetes33%
- Anxiety31%
- Mood disorders28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dempsey's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Terrence William Dempsey wrote 206 Medicare Part D claims in 2024
In 2024, Dr. Dempsey wrote 206 Medicare Part D claims for 106 patients. 97% of them were for generic drugs. CMS names the drug for 158 of them, across 2 drugs with 11 or more claims each, at $550 in total drug cost. In 2023, CMS named 168 claims across 2 drugs.
Dr. Dempsey's Part D claims by kind of drug, 2024
- Generic199 claims97%
- Brand-name and other7 claims3%
Dr. Dempsey'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. Dempsey's Part D claims, 2024
- Opioids48%98 of 206 claims
- Antibiotics44%91 of 206 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: 1682024: 1586%
Drugs named by CMS: 2 in 2024, 2 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. Terrence William Dempsey ranks in the 97th percentile for hernia repair - groin (open) in Medicare
Dr. Dempsey accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 25 procedures of hernia repair - groin (open) by Dr. Dempsey, more than 97% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Dempsey ranks in Medicare procedure volume
- Hernia repair - groin (open)
- 97th percentile25 procedures
- Melanoma (skin cancer) excision
- 69th percentile14 procedures
- Mastectomy
- 64th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Terrence William Dempsey received $15,084 in industry payments from 2016 to 2025
CMS Open Payments shows 77 general payments to Dr. Dempsey from 10 drug and device companies from 2016 to 2025. Education make up the largest share, 65% of the total. Intuitive Surgical, Inc. paid the most, $13,783.
General payments to Dr. Dempsey by program year, 2016 to 2025
General payments to Dr. Dempsey by kind, 2016 to 2025
- Education$9,81965%
- Travel and lodging$2,90019%
- Food and beverage$2,36616%
Companies that paid Dr. Dempsey 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. Terrence William Dempsey graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. Dempsey graduated from Loyola University of Chicago, Stritch School of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Terrence William Dempsey'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)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. Terrence William Dempsey
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. Terrence William Dempsey's NPI number?
Dr. Terrence William Dempsey's NPI number is 1477577690. It was assigned on July 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Terrence William Dempsey?
Dr. Terrence William Dempsey is a general surgeon in Saint John, Indiana. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Terrence William Dempsey practice?
Dr. Dempsey practices at 9660 Wicker Ave, Saint John, IN 46373. Dr. Dempsey's primary practice is Powers Health Medical Group in Saint John, Indiana. Dmand AI also links Dr. Dempsey to 3 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Terrence William Dempsey's office phone number?
The practice phone on file for Dr. Dempsey is (219) 365-7620.
What is Dr. Terrence William Dempsey's medical license number?
Dr. Dempsey holds Indiana license 01052760A.
Which hospitals is Dr. Terrence William Dempsey affiliated with?
Dr. Dempsey is affiliated with Community Hospital. Dmand AI links Dr. Dempsey to 3 more hospitals.
What medical group is Dr. Terrence William Dempsey part of?
Dr. Dempsey is linked to Powers Health Medical Group. Dmand AI links Dr. Dempsey to 1 more medical group.
Does Dr. Terrence William Dempsey accept Medicare?
Yes. CMS data shows Dr. Dempsey billed Medicare for 316 services in 2024, and Dr. Dempsey accepts Medicare assignment.
How many Medicare patients does Dr. Terrence William Dempsey see?
CMS counts 186 Medicare patients who saw Dr. Dempsey in 2024, with an average age of 75.
What services does Dr. Terrence William Dempsey bill to Medicare?
In 2024, Dr. Dempsey's most billed Medicare services were office visit, new patient (99204), hospital inpatient care (99232) and hospital inpatient care (99231).
Show 4 more questionsShow fewer questions
Where did Dr. Terrence William Dempsey go to medical school?
Dr. Dempsey graduated from Loyola University of Chicago, Stritch School of Medicine in 1992.
What drugs does Dr. Terrence William Dempsey prescribe most?
In 2024 Medicare Part D data, Dr. Dempsey's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Cephalexin.
Has Dr. Terrence William Dempsey received payments from drug or device companies?
CMS Open Payments shows $15,084 in general payments to Dr. Dempsey from 10 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Terrence William Dempsey been practicing?
Dr. Dempsey graduated from medical school in 1992, 34 years ago.
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