Dr. Gregory Keith Terpstra, DO
- Medicare services, 2024
- 1,056
- Medicare patients, 2024
- 181
- Part D claims, 2024
- 4,224
- Hospital affiliations
- 5
- Industry payments
- $660
- Practice address
- 612 E High St, Potosi, MO 63664
- Practice phone
- Call (573) 438-3660
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dr Gregory K. Terpstra D.O., Family Practice
Potosi, Missouri
Find Dr. Terpstra'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 Keith Terpstra is a family medicine physician in Potosi, Missouri
Dr. Terpstra practices at Dr Gregory K. Terpstra D.O., Family Practice in Potosi, Missouri.
Dr. Terpstra's NPI, 1952399792, was assigned on October 6, 2005. Dr. Terpstra graduated from University of Michigan Medical School in 1993. Dr. Terpstra holds Missouri license 110137.
- NPI
- 1952399792NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002863990
- NPI enumeration date
- October 6, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (573) 438-3660
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Keith Terpstra practices at Dr Gregory K. Terpstra D.O., Family Practice in Potosi, Missouri
Dr. Terpstra's primary practice is Dr Gregory K. Terpstra D.O., Family Practice, at 612 E High St, Potosi, MO 63664 in Washington County. The practice phone is (573) 438-3660.
- Dr Gregory K. Terpstra D.O., Family Practice612 E High St, Potosi, MO 63664 · Washington CountyPhone(573) 438-3660
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory Keith Terpstra is affiliated with 8 sites of care and 1 medical group
Dr. Terpstra's primary practice is Dr Gregory K. Terpstra D.O., Family Practice in Potosi, Missouri. Dr. Terpstra is also affiliated with Washington County Memorial Hospital. Dmand AI also links Dr. Terpstra to 4 more hospitals, 1 physician office, 1 rural health clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Keith Terpstra's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Terpstra practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr Gregory K. Terpstra D.O., Family Practice | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Keith Terpstra is one of 2,412 family medicine physicians in Missouri
Family medicine is Dr. Terpstra's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Terpstra is licensed in Missouri.
Specialties and state licenses
- Family medicine, MissouriPrimary
Family medicine physicians near Dr. Terpstra
Counts of family medicine physicians 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 Keith Terpstra billed Medicare for 1,056 services in 2024
CMS data shows 1,056 Medicare services from Dr. Terpstra across 12 procedure codes in 2024, for 181 Medicare patients. Medicare paid $46,552 for them. Every service was in an office.
Dr. Terpstra's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5142024: 5191%
- Other services
- 2023: 1982024: 21911%
- Surgery
- 2023: 2332024: 2119%
- Lab and pathology
- 2023: 412024: 5944%
- Tests and treatments
- 2023: 662024: 4827%
- Drugs given in the office
- 2023: 1312024: 0100%
Dr. Terpstra compared with the Missouri median for family medicine physicians, 2024
- Dr. Terpstra
- Missouri median
- Medicare services
- 1,056vs 3333.2 times
- Medicare patients
- 181vs 15616% above
- Part D claims
- 3,689vs 1,2313.0 times
Medians across 2,555 family medicine physicians in Missouri with Dmand AI profiles that report each measure.
Dr. Terpstra'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. Terpstra?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Terpstra and other family medicine physicians in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Keith Terpstra treated 181 Medicare patients in 2024, average age 74
CMS counts 181 Medicare patients who saw Dr. Terpstra in 2024. The largest group is 65 to 74, with 90 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Terpstra's median patient age at 67, with 44% women.
Dr. Terpstra's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Terpstra's Medicare patients by sex, 2024
- Women9150%
- Men9050%
Chronic conditions among Dr. Terpstra's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis39%
- Ischemic heart disease28%
- Diabetes26%
- Chronic kidney disease18%
- Anxiety15%
- Atrial fibrillation11%
Share of Medicare patients with each condition. A patient can have several.
Dr. Terpstra's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Keith Terpstra wrote 4,224 Medicare Part D claims in 2024
In 2024, Dr. Terpstra wrote 4,224 Medicare Part D claims for 228 patients. 86% of them were for generic drugs. CMS names the drug for 3,689 of them, across 79 drugs with 11 or more claims each, at $284,641 in total drug cost. In 2023, CMS named 3,159 claims across 79 drugs.
Dr. Terpstra's Part D claims by kind of drug, 2024
- Generic3,649 claims86%
- Brand-name555 claims13%
- Other20 claims0%
Dr. Terpstra'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. Terpstra's Part D claims, 2024
- Opioids1%27 of 4,224 claims
- Antibiotics4%171 of 4,224 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: 3,1592024: 3,68917%
Drugs named by CMS: 79 in 2024, 79 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 Keith Terpstra ranks in the 60th percentile for removal of skin lesions in Medicare
Dr. Terpstra accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 13 procedures of removal of skin lesions by Dr. Terpstra, more than 60% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Terpstra ranks in Medicare procedure volume
- Removal of skin lesions
- 60th percentile13 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 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. Gregory Keith Terpstra received $660 in industry payments from 2016 to 2025
CMS Open Payments shows 28 general payments to Dr. Terpstra from 17 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $265.
General payments to Dr. Terpstra by program year, 2016 to 2025
General payments to Dr. Terpstra by kind, 2016 to 2025
- Food and beverage$65199%
- Education$81%
Companies that paid Dr. Terpstra 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 Keith Terpstra graduated from University of Michigan Medical School
Dr. Terpstra graduated from University of Michigan Medical School in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Keith Terpstra'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 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)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. Gregory Keith Terpstra
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 Keith Terpstra's NPI number?
Dr. Gregory Keith Terpstra's NPI number is 1952399792. It was assigned on October 6, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Keith Terpstra?
Dr. Gregory Keith Terpstra is a family medicine physician in Potosi, Missouri. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Gregory Keith Terpstra practice?
Dr. Terpstra practices at 612 E High St, Potosi, MO 63664. Dr. Terpstra's primary practice is Dr Gregory K. Terpstra D.O., Family Practice in Potosi, Missouri. Dmand AI also links Dr. Terpstra to 4 hospitals, 1 physician office, 1 rural health clinic and 1 medical group.
What is Dr. Gregory Keith Terpstra's office phone number?
The practice phone on file for Dr. Terpstra is (573) 438-3660.
What is Dr. Gregory Keith Terpstra's medical license number?
Dr. Terpstra holds Missouri license 110137.
Which hospitals is Dr. Gregory Keith Terpstra affiliated with?
Dr. Terpstra is affiliated with Washington County Memorial Hospital. Dmand AI links Dr. Terpstra to 4 more hospitals.
Does Dr. Gregory Keith Terpstra accept Medicare?
Yes. CMS data shows Dr. Terpstra billed Medicare for 1,056 services in 2024, and Dr. Terpstra accepts Medicare assignment.
How many Medicare patients does Dr. Gregory Keith Terpstra see?
CMS counts 181 Medicare patients who saw Dr. Terpstra in 2024, with an average age of 74.
What services does Dr. Gregory Keith Terpstra bill to Medicare?
In 2024, Dr. Terpstra's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and office visit, established patient (99213).
Where did Dr. Gregory Keith Terpstra go to medical school?
Dr. Terpstra graduated from University of Michigan Medical School in 1993.
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What drugs does Dr. Gregory Keith Terpstra prescribe most?
In 2024 Medicare Part D data, Dr. Terpstra's most prescribed drugs by claims were Atorvastatin Calcium, Enalapril Maleate and Metoprolol Succinate.
Has Dr. Gregory Keith Terpstra received payments from drug or device companies?
CMS Open Payments shows $660 in general payments to Dr. Terpstra from 17 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Gregory Keith Terpstra been practicing?
Dr. Terpstra graduated from medical school in 1993, 33 years ago.
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