Dr. David Anthony Knuff, MD
- Medicare services, 2024
- 275
- Medicare patients, 2024
- 238
- Part D claims, 2024
- 722
- Hospital affiliations
- 2
- Industry payments
- $4,678
- Practice address
- 744 S Webster Ave, Green Bay, WI 54301
- Practice phone
- Call (920) 433-3500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Knuff's professional email, personal email and mobile number
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Dr. David Anthony Knuff is a gastroenterologist in Green Bay, Wisconsin
Dr. Knuff practices at Emplify Health Green Bay Hospital in Green Bay, Wisconsin, part of Emplify Health.
Dr. Knuff's NPI, 1386723773, was assigned on November 4, 2006. Dr. Knuff graduated from Wayne State University School of Medicine in 2000. Dr. Knuff holds Wisconsin license 47715-020.
- NPI
- 1386723773NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971603408
- NPI enumeration date
- November 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (920) 433-3500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Anthony Knuff practices at Emplify Health Green Bay Hospital in Green Bay, Wisconsin
Dr. Knuff's primary practice is Emplify Health Green Bay Hospital, at 744 S Webster Ave, Green Bay, WI 54301 in Brown County. The practice phone is (920) 433-3500.
- Emplify Health Green Bay Hospital744 S Webster Ave, Green Bay, WI 54301 · Brown CountyPhone(920) 433-3500
Source: Dmand AI Affiliation Data
Dr. David Anthony Knuff is affiliated with 5 sites of care and 3 medical groups
Dr. Knuff's primary practice is Emplify Health Green Bay Hospital in Green Bay, Wisconsin, part of Emplify Health. The medical group on file is Bellin Health Heart & Vascular Crystal Falls. Dmand AI also links Dr. Knuff to 1 more hospital, 2 group practices and clinics, 2 medical groups and 1 imaging center, 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. David Anthony Knuff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knuff practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Emplify Health Green Bay Hospital | Available with a free account |
| +4 more sites and 2 medical groups | 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 Emplify Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. David Anthony Knuff is one of 277 gastroenterologists in Wisconsin
Gastroenterology is Dr. Knuff's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Knuff is licensed in Wisconsin.
Specialties and state licenses
- Gastroenterology, WisconsinPrimary
Gastroenterologists near Dr. Knuff
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. David Anthony Knuff billed Medicare for 275 services in 2024
CMS data shows 275 Medicare services from Dr. Knuff across 9 procedure codes in 2024, for 238 Medicare patients. Medicare paid $33,042 for them.
Dr. Knuff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 2122024: 2053%
- Other services
- 2023: 602024: 4820%
- Office and hospital visits
- 2023: 112024: 22100%
Where Dr. Knuff's Medicare services took place, 2024
- In an office228%
- In a facility25392%
Dr. Knuff compared with the Wisconsin median for gastroenterologists, 2024
- Dr. Knuff
- Wisconsin median
- Medicare services
- 275vs 32916% below
- Medicare patients
- 238vs 2588% below
- Part D claims
- 651vs 42952% above
Medians across 278 gastroenterologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Knuff'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. Knuff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knuff and other gastroenterologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Anthony Knuff treated 238 Medicare patients in 2024, average age 70
CMS counts 238 Medicare patients who saw Dr. Knuff in 2024. The largest group is 65 to 74, with 141 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 16% are also on Medicaid. Their average risk score is 1.15, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Knuff's median patient age at 67, with 53% women.
Dr. Knuff's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Knuff's Medicare patients by sex, 2024
- Women13155%
- Men10745%
Chronic conditions among Dr. Knuff's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis40%
- Diabetes31%
- Anxiety30%
- Mood disorders29%
- Depression27%
- Ischemic heart disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Knuff'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
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Anthony Knuff wrote 722 Medicare Part D claims in 2024
In 2024, Dr. Knuff wrote 722 Medicare Part D claims for 561 patients. 63% of them were for generic drugs. CMS names the drug for 651 of them, across 8 drugs with 11 or more claims each, at $37,526 in total drug cost. In 2023, CMS named 583 claims across 6 drugs.
Dr. Knuff's Part D claims by kind of drug, 2024
- Generic456 claims63%
- Brand-name266 claims37%
Dr. Knuff'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: 5832024: 65112%
Drugs named by CMS: 8 in 2024, 6 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. David Anthony Knuff ranks in the 89th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Knuff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 188 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Knuff, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Knuff ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 89th percentile188 procedures
- Colonoscopy
- 88th percentile146 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. David Anthony Knuff received $4,678 in industry payments from 2016 to 2022
CMS Open Payments shows 130 general payments to Dr. Knuff from 19 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 72% of the total. Cook Medical LLC paid the most, $1,304.
General payments to Dr. Knuff by program year, 2016 to 2022
General payments to Dr. Knuff by kind, 2016 to 2022
- Food and beverage$3,37772%
- Travel and lodging$1,27327%
- Education$281%
Companies that paid Dr. Knuff the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Anthony Knuff graduated from Wayne State University School of Medicine
Dr. Knuff graduated from Wayne State University School of Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Anthony Knuff'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 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. David Anthony Knuff
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. David Anthony Knuff's NPI number?
Dr. David Anthony Knuff's NPI number is 1386723773. It was assigned on November 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David Anthony Knuff?
Dr. David Anthony Knuff is a gastroenterologist in Green Bay, Wisconsin. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. David Anthony Knuff practice?
Dr. Knuff practices at 744 S Webster Ave, Green Bay, WI 54301. Dr. Knuff's primary practice is Emplify Health Green Bay Hospital in Green Bay, Wisconsin, part of Emplify Health. Dmand AI also links Dr. Knuff to 1 hospital, 2 group practices and clinics, 2 medical groups and 1 imaging center.
What is Dr. David Anthony Knuff's office phone number?
The practice phone on file for Dr. Knuff is (920) 433-3500.
What is Dr. David Anthony Knuff's medical license number?
Dr. Knuff holds Wisconsin license 47715-020.
Which hospitals is Dr. David Anthony Knuff affiliated with?
Dr. Knuff practices at Emplify Health Green Bay Hospital in Green Bay, Wisconsin. Dmand AI links Dr. Knuff to 1 more hospital.
What medical group is Dr. David Anthony Knuff part of?
Dr. Knuff is linked to Bellin Health Heart & Vascular Crystal Falls. Dmand AI links Dr. Knuff to 2 more medical groups.
Does Dr. David Anthony Knuff accept Medicare?
Yes. CMS data shows Dr. Knuff billed Medicare for 275 services in 2024, and Dr. Knuff accepts Medicare assignment.
How many Medicare patients does Dr. David Anthony Knuff see?
CMS counts 238 Medicare patients who saw Dr. Knuff in 2024, with an average age of 70.
What services does Dr. David Anthony Knuff bill to Medicare?
In 2024, Dr. Knuff's most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43235) and surgery: digestive system (43239).
Show 4 more questionsShow fewer questions
Where did Dr. David Anthony Knuff go to medical school?
Dr. Knuff graduated from Wayne State University School of Medicine in 2000.
What drugs does Dr. David Anthony Knuff prescribe most?
In 2024 Medicare Part D data, Dr. Knuff's most prescribed drugs by claims were Peg 3350-Electrolyte, Sod Sulf-Potass Sulf-Mag Sulf and Omeprazole.
Has Dr. David Anthony Knuff received payments from drug or device companies?
CMS Open Payments shows $4,678 in general payments to Dr. Knuff from 19 companies from 2016 to 2022. The largest total came from Cook Medical LLC.
How long has Dr. David Anthony Knuff been practicing?
Dr. Knuff graduated from medical school in 2000, 26 years ago.
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