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DAVID ANTHONY KNUFF M.D.
NPI 1386723773
Internal Medicine - Gastroenterology in Green Bay, WI

Active since November 04, 2006PECOS EnrolledAccepts Medicare Assignment
725 S WEBSTER AVE, GREEN BAY, WI 54301(920) 431-5650(920) 433-7400 Get Directions Write a Review

NPPES record last updated: May 5, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 5, 2022, Apr 15, 2022 (2 updates tracked since 2022).

About David Anthony Knuff M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DAVID ANTHONY KNUFF M.D. (NPI 1386723773) is an individual gastroenterology provider in Green Bay, Wisconsin, licensed in Wisconsin (47715-020) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Bellin Memorial Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1386723773
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDAVID ANTHONY KNUFFCredential: M.D.
Location Address725 S WEBSTER AVEGreen Bay, WI 54301-3500
Mailing AddressPo Box 22487Green Bay, WI 54305-2487 · (920) 445-7222 · Fax (920) 445-7289
Phone(920) 431-5650
Fax(920) 433-7400
Sole ProprietorNo
Medical School CMSWayne State University School Of MedicineGraduated 2000
Enumeration DateNovember 4, 2006
Last NPPES UpdateMay 5, 20222 updates tracked since enumeration
NPPES CertifiedMay 5, 2022
✔ NPI 1386723773 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in WI · 47715-020
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
725 S WEBSTER AVE, Green Bay, WI 54301
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1820 Arbutus AveOconto, WI 54153-2004 · Phone (920) 835-1100 · Fax (920) 835-1099
Location 22820 Roosevelt RdMarinette, WI 54143-3834 · Phone (715) 735-5225 · Fax (715) 735-5388

Other Identifiers 3

OtherP00419574Railroad Medicare
Other1005210952MI · Bcbs Of Michigan
Medicaid34954400WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

David Anthony Knuff M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3971603408
PECOS Enrollment IDI20080123000695
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
48 services48 patients
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235
This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.
43 services43 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
39 services38 patients
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121
Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.
36 services36 patients
Insertion of guide wire with dilation of esophagus using a flexible endoscope 43248
This is a procedure where a thin tube, called an endoscope, is gently passed through your mouth into your esophagus. A guide wire is then inserted to help widen any narrow areas. This helps improve swallowing and reduce discomfort.
29 services28 patients
Diagnostic exam of large bowel using a flexible endoscope 45378
This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.
27 services27 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Bellin Memorial Hospital

Acute Care Hospitals · Green Bay, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520049
Location744 S Webster AveGreen Bay, WI 54305 · Brown County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. WILLIAM B HITCH PH.D., ABPP
Psychologist
725 S WEBSTER AVE
GREEN BAY, WI 54301
Brown County (920) 433-7995
ABIGAIL N GOOD OT
Occupational Therapist
725 S WEBSTER AVE
GREEN BAY, WI 54301
Brown County (920) 433-3655
MEGAN C BRZEZINSKI APNP
Nurse Practitioner
725 S WEBSTER AVE, SUITE 201
GREEN BAY, WI 54301
Brown County (920) 430-7100
HALEY M HYLER PA
Physician Assistant
725 S WEBSTER AVE
GREEN BAY, WI 54301
Brown County (920) 431-5650
DR. DAVID K KAUFMAN MD
Psychiatry & Neurology (Neurology)
725 S WEBSTER AVE, SUITE 201
GREEN BAY, WI 54301
Brown County (920) 430-7100
ALEXANDRA N NELSON PA-C
Physician Assistant
725 S WEBSTER AVE
GREEN BAY, WI 54301
Brown County (920) 433-7995
ALEXANDRIA M CAELWAERTS D-PT
Physical Therapist
725 S WEBSTER AVE
GREEN BAY, WI 54301
Brown County (920) 433-7995
JORDAN CHRISTINE PEROUTKY SLP
Speech-Language Pathologist
725 S WEBSTER AVE
GREEN BAY, WI 54301
Brown County (920) 433-7995

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is David Knuff's NPI number?

The NPI number for David Knuff is 1386723773. It was assigned to this individual provider in the NPPES registry on November 4, 2006.

Where is David Knuff located?

David Knuff practices at 725 S Webster Ave, Green Bay, WI 54301. The listed phone number is (920) 431-5650.

What is David Knuff's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is David Knuff enrolled in Medicare?

Yes. David Knuff is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does David Knuff accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and HealthPartners list David Knuff as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is David Knuff affiliated with any hospitals?

According to CMS data, David Knuff is affiliated with Bellin Memorial Hospital.

When was this NPI record last updated?

The NPPES record for David Knuff was last updated on May 5, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.