Hannah Flak
Surgical Physician Assistant · Marshfield, WI
Hannah Flak is a surgical physician assistant with a practice address in Marshfield, Wisconsin, and NPI 1043995111, issued on Jun 16, 2023. Check the license (Wisconsin 8455, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Hannah Flak
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License number
- 8455 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 North Oak Avenue, Marshfield, WI 54449
- Phone
- (715) 387-5511
- Enumerated
- Jun 16, 2023
- Record last updated
- Nov 18, 2025
- Medicare enrollment
- Enrolled (PECOS I20251003001810); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 287 in Wisconsin → Look up another NPI →
Also registered at 1000 North Oak Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raquel Buser, MDAnesthesiology Physician1255314548
- Virginia BustamanteStudent in an Organized Health Care Education/Training Program1376228577
- Paul Fischbuch, MDPediatrics Physician1164841466
- Mohammed Ilyas, MDNeurology with Special Qualifications in Child Neurology Physician1184952954
- Nicholas Lueddecke, PA-CPhysician Assistant1952916108
- Dreese MarrakchiStudent in an Organized Health Care Education/Training Program1902427222
Verify Hannah Flak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 8455Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Mchs Hospitals IncMarshfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hannah Flak among 287 surgical physician assistant records in Wisconsin
Hannah Flak is one of 287 surgical physician assistant records with a practice address in Wisconsin. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 92% of them.
- NPI issued2023 · 92% of these records are older, 3% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2025 · median 2016 among the 213 with a school on file
- Record last updated2025 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Physician Assistant providers in Wisconsin
There are 287 surgical physician assistant records in Wisconsin.
All 287 in Wisconsin → Every provider in Marshfield → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Darayu Boltaeva, DMS, PA-CMarshfield, WI 544491912714692
- Ann Sommer, PA-CMarshfield, WI 544491518010966
- David Spencer, PA-CMarshfield, WI 544491093199796
- Dylan Graff, PA-CWeston, WI 544761922593805
- Tracie Hinaus, PA-CStevens Point, WI 544811952329401
- James Lepak, PA-CStevens Point, WI 544811225063068
- Gloria Lockwood, C-OPAWisconsin Rapids, WI 544941922157957
- Jeffrey Ambord, PA-CWausau, WI 544011942292396
Common questions
What is Hannah Flak's NPI number?
Hannah Flak's National Provider Identifier (NPI) is 1043995111, issued on Jun 16, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Hannah Flak located?
The NPPES record lists a practice address at 1000 North Oak Avenue, Marshfield, WI, 54449. Phone: (715) 387-5511. Providers update this record themselves, so call before visiting.
How can I verify Hannah Flak's license?
NPPES lists Wisconsin license number 8455, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity 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.