Dr. Mark L. Thayer, MD
- Medicare services, 2016
- 127
- Part D claims, 2016
- 13
- Hospital affiliations
- 1
- Industry payments
- $47
- Medical groups
- 2
- Practice address
- 257 W St George Ave, Grantsburg, WI 54840
- Practice phone
- Call (715) 463-5353
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Thayer'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. Mark L. Thayer is a general surgeon in Grantsburg, Wisconsin
Dr. Thayer practices at Burnett Medical Center in Grantsburg, Wisconsin, part of Burnett Medical Center.
Dr. Thayer's NPI, 1568424778, was assigned on April 4, 2006. Dr. Thayer holds Wisconsin license 32528.
- NPI
- 1568424778NPI Registry (opens in a new tab)
- NPI enumeration date
- April 4, 2006
- NPI status
- Active
- Practice phone
- (715) 463-5353
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mark L. Thayer practices at Burnett Medical Center in Grantsburg, Wisconsin
Dr. Thayer's primary practice is Burnett Medical Center, at 257 W St George Ave, Grantsburg, WI 54840 in Burnett County. The practice phone is (715) 463-5353.
- Burnett Medical Center257 W St George Ave, Grantsburg, WI 54840 · Burnett CountyPhone(715) 463-5353
Source: Dmand AI Affiliation Data
Dr. Mark L. Thayer is affiliated with 1 site of care and 2 medical groups
Dr. Thayer's primary practice is Burnett Medical Center in Grantsburg, Wisconsin, part of Burnett Medical Center. The medical group on file is Burnett Medical Center. Dmand AI also links Dr. Thayer to 1 more medical group, named with a free account. Dr. Thayer's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark L. Thayer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thayer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Burnett Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Burnett Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark L. Thayer is one of 565 general surgeons in Wisconsin
Surgery is Dr. Thayer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Thayer's licenses on file in 2 states: Wisconsin and Minnesota.
Specialties and state licenses
- Surgery, WisconsinPrimary
- Minnesota license
General surgeons near Dr. Thayer
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. Mark L. Thayer billed Medicare for 127 services in 2016
CMS data shows 127 Medicare services from Dr. Thayer across 4 procedure codes in 2016. Medicare paid $7,473 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Thayer's Medicare services by type, 2016
- Office and hospital visits89
- Tests and treatments38
Dr. Thayer compared with the Wisconsin median for general surgeons, 2016
- Dr. Thayer
- Wisconsin median
- Medicare services
- 127vs 9928% above
- Part D claims
- 13vs 3765% below
Medians across 557 general surgeons in Wisconsin with Dmand AI profiles that report each measure.
Dr. Thayer's most billed Medicare procedure codes, 2016
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. Thayer and other general surgeons in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark L. Thayer's patients have a median age of 41
Across all payers, Dmand AI patient panel data puts Dr. Thayer's median patient age at 41, with 38% women.
Dr. Thayer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women38%
- Men63%
Source: Dmand AI Patient Panel Data
Dr. Mark L. Thayer wrote 13 Medicare Part D claims in 2016
In 2016, Dr. Thayer wrote 13 Medicare Part D claims. They cover 1 drug, with $52 in total drug cost.
Dr. Thayer's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Mark L. Thayer received $47 in industry payments from 2024 to 2025
CMS Open Payments shows 2 general payments to Dr. Thayer from 1 drug or device company from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Sanofi Pasteur Inc. paid the most, $47.
General payments to Dr. Thayer by program year, 2024 to 2025
Companies that paid Dr. Thayer the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark L. Thayer'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 | Dmand AI Affiliation 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Mark L. Thayer
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. Mark L. Thayer's NPI number?
Dr. Mark L. Thayer's NPI number is 1568424778. It was assigned on April 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark L. Thayer?
Dr. Mark L. Thayer is a general surgeon in Grantsburg, Wisconsin. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Mark L. Thayer practice?
Dr. Thayer practices at 257 W St George Ave, Grantsburg, WI 54840. Dr. Thayer's primary practice is Burnett Medical Center in Grantsburg, Wisconsin, part of Burnett Medical Center. Dmand AI also links Dr. Thayer to 1 medical group.
What is Dr. Mark L. Thayer's office phone number?
The practice phone on file for Dr. Thayer is (715) 463-5353.
What is Dr. Mark L. Thayer's medical license number?
Dr. Thayer holds Wisconsin license 32528, one of the licenses on file in 2 states.
Which states has Dr. Mark L. Thayer been licensed in?
Dmand AI has state licenses on file for Dr. Thayer in Wisconsin and Minnesota.
Which hospitals is Dr. Mark L. Thayer affiliated with?
Dr. Thayer practices at Burnett Medical Center in Grantsburg, Wisconsin.
What medical group is Dr. Mark L. Thayer part of?
Dr. Thayer is linked to Burnett Medical Center. Dmand AI links Dr. Thayer to 1 more medical group.
Does Dr. Mark L. Thayer accept Medicare?
Yes. CMS data shows Dr. Thayer billed Medicare for 127 services in 2016.
What services does Dr. Mark L. Thayer bill to Medicare?
In 2016, Dr. Thayer's most billed Medicare services were heart test or procedure (93010), emergency department visit (99284) and emergency department visit (99283).
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What drugs does Dr. Mark L. Thayer prescribe most?
In 2016 Medicare Part D data, Dr. Thayer's most prescribed drugs by claims were Oxycodone-Acetaminophen.
Has Dr. Mark L. Thayer received payments from drug or device companies?
CMS Open Payments shows $47 in general payments to Dr. Thayer from 1 company from 2024 to 2025. The largest total came from Sanofi Pasteur Inc.
How long has Dr. Mark L. Thayer been practicing?
Dr. Thayer's NPI was assigned in 2006.
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