Cory Zastrow, DO
Family Medicine Physician · Eau Claire, WI
Cory Zastrow, DO is a family medicine physician with a practice address in Eau Claire, Wisconsin, and NPI 1699355842, issued on Apr 12, 2021. Check the license (Wisconsin 81052, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Cory Zastrow
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 81052 WI
Self-reported in NPPES; status is on the state search - Practice location
- 617 W Clairemont Ave, Eau Claire, WI 54701
- Phone
- (715) 839-5175
- Enumerated
- Apr 12, 2021
- Record last updated
- May 22, 2024
- Medicare enrollment
- Enrolled (PECOS I20240827001330); accepts Medicare assignment
- Medical or professional school
- Campbell Univ School Of Osteopathic Medicine, 2021
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 617 W Clairemont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amanda Bradley, APNPPrimary Care Nurse Practitioner1194387035
- Michael Braunsky, DOStudent in an Organized Health Care Education/Training Program1861811499
- Michael Chardack, MDOrthopaedic Surgery Physician1679520944
- Srinivas Chunduri, MDStudent in an Organized Health Care Education/Training Program1457391799
- Andrea Cifaldi, DPMPodiatrist1053817379
Verify Cory Zastrow in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 81052Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average family medicine physician in 2024
365 Medicare Part D claims for 87 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Eliquis40 claims
- Atorvastatin Calcium20 claims
- Metoprolol Tartrate16 claims
- Sertraline Hcl16 claims
- Gabapentin15 claims
- Levothyroxine Sodium15 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 one group practice
- Allina Health SystemSt Michael, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cory Zastrow among 3,765 family medicine physician records in Wisconsin
Cory Zastrow, DO 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 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2021 · median 2007 among the 2,347 with a school on file
- Record last updated2024 · 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).
111 family medicine physician records list a practice address in Eau Claire
They are 111 of the 3,085 NPPES records with a practice address in Eau Claire, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Eau Claire → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Mark Attermeier, MDEau Claire, WI 547011548231442
- John Bollinger, MDEau Claire, WI 547011518947662
- Catharine Decker, MDEau Claire, WI 547011700865003
- Gene Enders, MDEau Claire, WI 547011841261757
- Amy Falkenberg, MDEau Claire, WI 547011568453512
- Lisa Gillette, MDEau Claire, WI 547011215908124
- Paul Green, MDEau Claire, WI 547011801876966
- Paul Loomis, MDEau Claire, WI 547011073584975
Common questions
What is Cory Zastrow, DO's NPI number?
Cory Zastrow, DO's National Provider Identifier (NPI) is 1699355842, issued on Apr 12, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Cory Zastrow, DO located?
The NPPES record lists a practice address at 617 W Clairemont Ave, Eau Claire, WI, 54701. Phone: (715) 839-5175. Providers update this record themselves, so call before visiting.
How can I verify Cory Zastrow, DO's license?
NPPES lists Wisconsin license number 81052, 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 Cory Zastrow, DO prescribe under Medicare Part D?
In 2024, Cory Zastrow, DO had 365 Medicare Part D claims for 87 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.