Dr. Greg L. Thorgaard, MD
- Medicare services, 2024
- 1,384
- Medicare patients, 2024
- 858
- Part D claims, 2024
- 1,102
- Industry payments
- $457
- Affiliated sites
- 2
- Practice address
- 309 E Church St, Marshalltown, IA 50158
- Practice phone
- Call (641) 754-6200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Wolfe Eye Clinic- Marshalltown
Marshalltown, Iowa
Find Dr. Thorgaard'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. Greg L. Thorgaard is an ophthalmologist in Marshalltown, Iowa
Dr. Thorgaard practices at Wolfe Eye Clinic- Marshalltown in Marshalltown, Iowa.
Dr. Thorgaard's NPI, 1770585366, was assigned on August 12, 2005. Dr. Thorgaard graduated from University of Iowa, RJ & L Carver College of Medicine in 1983. Dr. Thorgaard holds Iowa license 24334.
- NPI
- 1770585366NPI Registry (opens in a new tab)
- NPI enumeration date
- August 12, 2005
- NPI status
- Active
- Practice phone
- (641) 754-6200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Greg L. Thorgaard practices at Wolfe Eye Clinic- Marshalltown in Marshalltown, Iowa
Dr. Thorgaard's primary practice is Wolfe Eye Clinic- Marshalltown, at 309 E Church St, Marshalltown, IA 50158 in Marshall County. The practice phone is (641) 754-6200.
- Wolfe Eye Clinic- Marshalltown309 E Church St, Marshalltown, IA 50158 · Marshall CountyPhone(641) 754-6200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Greg L. Thorgaard is affiliated with 3 sites of care and 2 medical groups
Dr. Thorgaard's primary practice is Wolfe Eye Clinic- Marshalltown in Marshalltown, Iowa. Dmand AI also links Dr. Thorgaard to 2 group practices and clinics and 2 medical groups, 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. Greg L. Thorgaard's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thorgaard practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wolfe Eye Clinic- Marshalltown | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Greg L. Thorgaard is one of 180 ophthalmologists in Iowa
Ophthalmology is Dr. Thorgaard's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Thorgaard is licensed in Iowa.
Specialties and state licenses
- Ophthalmology, IowaPrimary
Ophthalmologists near Dr. Thorgaard
Counts of ophthalmologists 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. Greg L. Thorgaard billed Medicare for 1,384 services in 2024
CMS data shows 1,384 Medicare services from Dr. Thorgaard across 11 procedure codes in 2024, for 858 Medicare patients. Medicare paid $105,137 for them. Every service was in an office.
Dr. Thorgaard's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 9562024: 1,07312%
- Office and hospital visits
- 2023: 2182024: 19511%
- Surgery
- 2023: 1122024: 1164%
Dr. Thorgaard compared with the Iowa median for ophthalmologists, 2024
- Dr. Thorgaard
- Iowa median
- Medicare services
- 1,384vs 1,79223% below
- Medicare patients
- 858vs 66928% above
- Part D claims
- 1,026vs 3962.6 times
Medians across 183 ophthalmologists in Iowa with Dmand AI profiles that report each measure.
Dr. Thorgaard'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Greg L. Thorgaard treated 858 Medicare patients in 2024, average age 78
CMS counts 858 Medicare patients who saw Dr. Thorgaard in 2024. The largest group is 75 to 84, with 356 patients. 75% of them have high blood pressure, and 71% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Thorgaard's median patient age at 79, with 55% women.
Dr. Thorgaard's Medicare patients by age, 2024
Dr. Thorgaard's Medicare patients by sex, 2024
- Women53462%
- Men32438%
Chronic conditions among Dr. Thorgaard's Medicare patients, 2024
- High blood pressure75%
- High cholesterol71%
- Arthritis41%
- Diabetes29%
- Ischemic heart disease25%
- Chronic kidney disease22%
- Atrial fibrillation19%
- Osteoporosis17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Thorgaard's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 79
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Greg L. Thorgaard wrote 1,102 Medicare Part D claims in 2024
In 2024, Dr. Thorgaard wrote 1,102 Medicare Part D claims for 207 patients. 73% of them were for generic drugs. CMS names the drug for 1,026 of them, across 15 drugs with 11 or more claims each, at $110,534 in total drug cost. In 2023, CMS named 1,080 claims across 16 drugs.
Dr. Thorgaard's Part D claims by kind of drug, 2024
- Generic808 claims73%
- Brand-name294 claims27%
Dr. Thorgaard'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: 1,0802024: 1,0265%
Drugs named by CMS: 15 in 2024, 16 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. Greg L. Thorgaard received $457 in industry payments from 2016 to 2023
CMS Open Payments shows 20 general payments to Dr. Thorgaard from 6 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 67% of the total. Shire North American Group Inc paid the most, $319.
General payments to Dr. Thorgaard by program year, 2016 to 2023
General payments to Dr. Thorgaard by kind, 2016 to 2023
- Food and beverage$30767%
- Speaker and faculty fees$15033%
Companies that paid Dr. Thorgaard the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Greg L. Thorgaard graduated from University of Iowa, RJ & L Carver College of Medicine
Dr. Thorgaard graduated from University of Iowa, RJ & L Carver College of Medicine in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Greg L. Thorgaard'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) |
| 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. Greg L. Thorgaard
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. Greg L. Thorgaard's NPI number?
Dr. Greg L. Thorgaard's NPI number is 1770585366. It was assigned on August 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Greg L. Thorgaard?
Dr. Greg L. Thorgaard is an ophthalmologist in Marshalltown, Iowa. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Greg L. Thorgaard practice?
Dr. Thorgaard practices at 309 E Church St, Marshalltown, IA 50158. Dr. Thorgaard's primary practice is Wolfe Eye Clinic- Marshalltown in Marshalltown, Iowa. Dmand AI also links Dr. Thorgaard to 2 group practices and clinics and 2 medical groups.
What is Dr. Greg L. Thorgaard's office phone number?
The practice phone on file for Dr. Thorgaard is (641) 754-6200.
What is Dr. Greg L. Thorgaard's medical license number?
Dr. Thorgaard holds Iowa license 24334.
Does Dr. Greg L. Thorgaard accept Medicare?
Yes. CMS data shows Dr. Thorgaard billed Medicare for 1,384 services in 2024.
How many Medicare patients does Dr. Greg L. Thorgaard see?
CMS counts 858 Medicare patients who saw Dr. Thorgaard in 2024, with an average age of 78.
What services does Dr. Greg L. Thorgaard bill to Medicare?
In 2024, Dr. Thorgaard's most billed Medicare services were eye exam or test (92014), eye exam or test (92134) and eye exam or test (92083).
Where did Dr. Greg L. Thorgaard go to medical school?
Dr. Thorgaard graduated from University of Iowa, RJ & L Carver College of Medicine in 1983.
What drugs does Dr. Greg L. Thorgaard prescribe most?
In 2024 Medicare Part D data, Dr. Thorgaard's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Lumigan.
Has Dr. Greg L. Thorgaard received payments from drug or device companies?
CMS Open Payments shows $457 in general payments to Dr. Thorgaard from 6 companies from 2016 to 2023. The largest total came from Shire North American Group Inc.
How long has Dr. Greg L. Thorgaard been practicing?
Dr. Thorgaard graduated from medical school in 1983, 43 years ago.
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