Bartosz J. Grzywacz, M.D.
Anatomic Pathology & Clinical Pathology Physician · Madison, WI
Bartosz J. Grzywacz, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Madison, Wisconsin, and NPI 1386870251, issued on Jun 5, 2009. Check the license on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Bartosz J. Grzywacz
- Credential
- M.D.
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- 107470 MN
Self-reported in NPPES; status is on the state search - Practice location
- UW Hospital And Clinics, Madison, WI 53792
- Phone
- (608) 263-0572
- Enumerated
- Jun 5, 2009
- Record last updated
- Apr 28, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (608) 890-7127
- Medicare enrollment
- Enrolled (PECOS I20240710001134); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 335 in Wisconsin → Look up another NPI →
Also registered at UW Hospital And Clinics
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kerstin Austin, M.D.Gastroenterology Physician1497013023
- James Bauer, M.D.Anatomic Pathology & Clinical Pathology Physician1902249543
- Lisa BodenhamerPsychiatry Physician1255750733
Verify Bartosz J. Grzywacz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 81.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bartosz J. Grzywacz among 335 anatomic pathology & clinical pathology physician records in Wisconsin
Bartosz J. Grzywacz, M.D. is one of 335 anatomic pathology & clinical pathology physician records with a practice address in Wisconsin. 58% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 64% of them.
- NPI issued2009 · 64% of these records are older, 34% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1999 · median 2004 among the 166 with a school on file
- Record last updated2014 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Wisconsin
There are 335 anatomic pathology & clinical pathology physician records in Wisconsin.
All 335 in Wisconsin → Every provider in Madison → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Maria Ahmad, M.D.Madison, WI 537921104987650
- James Bauer, M.D.Madison, WI 537921902249543
- Adam CovachMadison, WI 537921700229572
- Eric Destrampe, D.O.Madison, WI 537921265845317
- Cheng Liu, MD, PHDMadison, WI 537921184693012
- Jesse Lloyd, M.D.Madison, WI 537921548497480
- Madhuchhanda Roy, MD, PHDMadison, WI 537921518387539
- Patrick Rush, D.O.Madison, WI 537921447694328
Common questions
What is Bartosz J. Grzywacz, M.D.'s NPI number?
Bartosz J. Grzywacz, M.D.'s National Provider Identifier (NPI) is 1386870251, issued on Jun 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Bartosz J. Grzywacz, M.D. located?
The NPPES record lists a practice address at UW Hospital And Clinics, Madison, WI, 53792. Phone: (608) 263-0572. Providers update this record themselves, so call before visiting.
How can I verify Bartosz J. Grzywacz, M.D.'s license?
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.
What is Bartosz J. Grzywacz, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.