Zachary E. Pflum, M.D.
Otolaryngology Physician · Greenfield, WI
Zachary E. Pflum, M.D. is an otolaryngology physician with a practice address in Greenfield, Wisconsin, and NPI 1225416662, issued on May 18, 2015. Check the license (Wisconsin 73408-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Zachary E. Pflum
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 73408-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 4600 W Loomis RD, Greenfield, WI 53220
- Phone
- (414) 218-4466
- Enumerated
- May 18, 2015
- Record last updated
- Jun 11, 2026
- Medicaid ID
- 100100061 WI
- Medicare enrollment
- Enrolled (PECOS I20200624000236); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 231 in Wisconsin → Look up another NPI →
Also registered at 4600 W Loomis RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Barton, MDOtolaryngology Physician1447261912
- Sara Bjorklund, PA-CPhysician Assistant1932464088
- Brianne Gebhardt, APNPNurse Practitioner1538714316
- Adam Holt, MDFamily Medicine Physician1649579095
- Kimberly Kocher, PAPhysician Assistant1801202445
- Mimi Kokoska, MDOtolaryngology Physician1770674897
Verify Zachary E. Pflum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 73408-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average otolaryngology physician in 2024
177 Medicare Part D claims for 76 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D.
Most prescribed
- Lidocaine Hcl Viscous36 claims
- Pantoprazole Sodium24 claims
- Fluticasone Propionate21 claims
- Ipratropium Bromide21 claims
- Omeprazole13 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
- Aurora Medical Group, Inc.Greenfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary E. Pflum among 231 otolaryngology physician records in Wisconsin
Zachary E. Pflum, M.D. is one of 231 otolaryngology physician records with a practice address in Wisconsin. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 77% of them.
- NPI issued2015 · 77% of these records are older, 20% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2015 · median 2004 among the 147 with a school on file
- Record last updated2026 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 otolaryngology physician records list a practice address in Greenfield
They are 9 of the 961 NPPES records with a practice address in Greenfield, and 231 otolaryngology physician records in Wisconsin.
All 231 in Wisconsin → Every provider in Greenfield → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- James Barton, MDGreenfield, WI 532201447261912
- Mitchell Dobberpuhl, M.D.Greenfield, WI 532201558705327
- David Hyman, M.D.Greenfield, WI 532201497098917
- Mimi Kokoska, MDGreenfield, WI 532201770674897
- Michael Nordstrom, MDGreenfield, WI 532201376554832
- Ruben Romero, MDGreenfield, WI 532201669483129
- Steven Sperry, MDGreenfield, WI 532201922262401
- Douglas Wermuth, M.D.Greenfield, WI 532201871585505
Common questions
What is Zachary E. Pflum, M.D.'s NPI number?
Zachary E. Pflum, M.D.'s National Provider Identifier (NPI) is 1225416662, issued on May 18, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Zachary E. Pflum, M.D. located?
The NPPES record lists a practice address at 4600 W Loomis RD, Greenfield, WI, 53220. Phone: (414) 218-4466. Providers update this record themselves, so call before visiting.
How can I verify Zachary E. Pflum, M.D.'s license?
NPPES lists Wisconsin license number 73408-20, 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 Zachary E. Pflum, M.D. prescribe under Medicare Part D?
In 2024, Zachary E. Pflum, M.D. had 177 Medicare Part D claims for 76 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.