Mark Andrew Welnick, M.D.
Diagnostic Radiology Physician · Green Bay, WI
Mark Andrew Welnick, M.D. is a diagnostic radiology physician with a practice address in Green Bay, Wisconsin, and NPI 1255698221, issued on Apr 16, 2012. Check the license (Wisconsin 66995-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mark Andrew Welnick
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- 66995-20 WI
63777 MN
Self-reported in NPPES; status is on the state search - Practice location
- 744 S Webster Ave, Green Bay, WI 54301
- Phone
- (920) 433-6084
- Enumerated
- Apr 16, 2012
- Record last updated
- Aug 28, 2025
- Fax
- (920) 445-7289
- Medicare enrollment
- Enrolled (PECOS I20191114000378); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,005 in Wisconsin → Look up another NPI →
Also registered at 744 S Webster Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Hannah Alsteen, FNP-CFamily Nurse Practitioner1649823881
- Kyle Anderson, CRNACertified Registered Nurse Anesthetist1205580313
- Lori Anderson, CRNACertified Registered Nurse Anesthetist1508953274
- Paul AndersonAnesthesiology Physician1750648481
Verify Mark Andrew Welnick in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 66995-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% more Medicare Part D claims than the average diagnostic radiology physician in 2024
77 Medicare Part D claims for 29 beneficiaries, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D.
Most prescribed
- Clopidogrel43 claims
- Cilostazol21 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $8,397.45
30 payments; by number, the most common kind was food and beverage; the largest payer was Penumbra, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 4 group practices
- Baycare Aurora LLCGreen Bay, WI
- Bellin Memorial Hospital IncIron Mountain, MI
- Osf Multi-Specialty GroupGreen Bay, WI
- St Francis HospitalEscanaba, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Andrew Welnick among 1,005 diagnostic radiology physician records in Wisconsin
Mark Andrew Welnick, M.D. is one of 1,005 diagnostic radiology physician records with a practice address in Wisconsin. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 73% of them.
- NPI issued2012 · 73% of these records are older, 25% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2012 · median 2006 among the 664 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
53 diagnostic radiology physician records list a practice address in Green Bay
They are 53 of the 4,619 NPPES records with a practice address in Green Bay, and 1,005 diagnostic radiology physician records in Wisconsin.
All 1,005 in Wisconsin → Every provider in Green Bay → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Lukasz Babiarz, M.D., M.B.A.Green Bay, WI 543011346476066
- Nicholas Johnson, M.D.Green Bay, WI 543011548520695
- Christopher Mager, MDGreen Bay, WI 543011407084478
- Madeline McNally, M.D.Green Bay, WI 543011457517195
- Tchaiko Parris, MDGreen Bay, WI 543011467630954
- James Picotte, M.D.Green Bay, WI 543011083786511
- Jeff Arnholt, MD, PHDGreen Bay, WI 543031144206814
- Douglas Coyle, MDGreen Bay, WI 543031912932054
Common questions
What is Mark Andrew Welnick, M.D.'s NPI number?
Mark Andrew Welnick, M.D.'s National Provider Identifier (NPI) is 1255698221, issued on Apr 16, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mark Andrew Welnick, M.D. located?
The NPPES record lists a practice address at 744 S Webster Ave, Green Bay, WI, 54301. Phone: (920) 433-6084. Providers update this record themselves, so call before visiting.
How can I verify Mark Andrew Welnick, M.D.'s license?
NPPES lists Wisconsin license number 66995-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Andrew Welnick, M.D. prescribe under Medicare Part D?
In 2024, Mark Andrew Welnick, M.D. had 77 Medicare Part D claims for 29 beneficiaries; the average among diagnostic radiology physician prescribers was 51. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.