Marianna Worczak, M.D.
Family Medicine Physician · Hayward, WI
Marianna Worczak, M.D. is a family medicine physician with a practice address in Hayward, Wisconsin, and NPI 1609190560, issued on Mar 22, 2010. Check the license (Wisconsin 85750, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Marianna Worczak
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 85750 WI
270703 NY
Self-reported in NPPES; status is on the state search - Practice location
- 535 11040 N State RD 77St, Hayward, WI 54843
- Phone
- (715) 934-4985
- Enumerated
- Mar 22, 2010
- Record last updated
- Oct 8, 2025
- Fax
- (716) 372-6421
- Medicare enrollment
- Enrolled (PECOS I20250616002647); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Verify Marianna Worczak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 85750Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average family medicine physician in 2024
1,976 Medicare Part D claims for 292 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 52 claims were for opioids.
Most prescribed
- Lisinopril95 claims
- Omeprazole73 claims
- Atorvastatin Calcium70 claims
- Levothyroxine Sodium64 claims
- Metformin Hcl48 claims
- Albuterol Sulfate Hfa46 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.
Bills Medicare through 2 group practices
- Champlain Valley Physicians Hospital Medical CenterPlattsburgh, NY
- Medical Services, IncHayward, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marianna Worczak among 3,765 family medicine physician records in Wisconsin
Marianna Worczak, M.D. is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.
- NPI issued2010 · 65% of these records are older, 33% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2010 · median 2007 among the 2,347 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 family medicine physician records list a practice address in Hayward
They are 25 of the 273 NPPES records with a practice address in Hayward, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Hayward → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michele Armstrong, M.D.Hayward, WI 548431487666723
- Rachael Chambers, DOHayward, WI 548431912976952
- John Decker, M.D.Hayward, WI 548431487696654
- Sabrina Dunlap, MDHayward, WI 548431083639892
- Katherine Eichten, MDHayward, WI 548431073735056
- Cynthia Hart, MDHayward, WI 548431295786325
- Julie Kahl, MDHayward, WI 548431225250343
- Brent Kelley, M.D.Hayward, WI 548431750306288
Common questions
What is Marianna Worczak, M.D.'s NPI number?
Marianna Worczak, M.D.'s National Provider Identifier (NPI) is 1609190560, issued on Mar 22, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Marianna Worczak, M.D. located?
The NPPES record lists a practice address at 535 11040 N State RD 77St, Hayward, WI, 54843. Phone: (715) 934-4985. Providers update this record themselves, so call before visiting.
How can I verify Marianna Worczak, M.D.'s license?
NPPES lists Wisconsin license number 85750, 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 Marianna Worczak, M.D. prescribe under Medicare Part D?
In 2024, Marianna Worczak, M.D. had 1,976 Medicare Part D claims for 292 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.