Sheffey N. Massey, DO
Emergency Medicine Physician · Eau Claire, WI
Sheffey N. Massey, DO is an emergency medicine physician with a practice address in Eau Claire, Wisconsin, and NPI 1609834365, issued on May 3, 2006. Check the license (Wisconsin 40066, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Sheffey N. Massey
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 40066 WI
57601 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1400 Bellinger St, Eau Claire, WI 54703
- Phone
- (715) 838-5222
- Enumerated
- May 3, 2006
- Record last updated
- Jan 8, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 30087000 WI
- Medicare enrollment
- Enrolled (PECOS I20140430001236); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 1993
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 1400 Bellinger St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andrea Aguayo, PHARMDPharmacist1003507492
- Boshra Al Ibraheem, MDFamily Medicine Physician1376399444
Verify Sheffey N. Massey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 40066Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average emergency medicine physician in 2024
168 Medicare Part D claims for 138 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 22 claims were for opioids.
Most prescribed
- Cephalexin38 claims
- Oxycodone-Acetaminophen19 claims
- Prednisone11 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
- Group Health Plan IncStillwater, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sheffey N. Massey among 1,464 emergency medicine physician records in Wisconsin
Sheffey N. Massey, DO is one of 1,464 emergency medicine physician records with a practice address in Wisconsin. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1993 · median 2011 among the 844 with a school on file
- Record last updated2019 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
66 emergency medicine physician records list a practice address in Eau Claire
They are 66 of the 3,085 NPPES records with a practice address in Eau Claire, and 1,464 emergency medicine physician records in Wisconsin.
All 1,464 in Wisconsin → Every provider in Eau Claire → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Alex Beuning, MDEau Claire, WI 547031295715860
- Susan Cullinan, MDEau Claire, WI 547031215995980
- Michael Hartman, MDEau Claire, WI 547031962450544
- Paul Horvath, M.D.Eau Claire, WI 547031912029141
- John Jacobson, MDEau Claire, WI 547031508829748
- Paul Krantz, D.O.Eau Claire, WI 547031447289053
- Matthew Olmstead, D.O.Eau Claire, WI 547031093836843
- Brian Pauley, MDEau Claire, WI 547031730137654
Common questions
What is Sheffey N. Massey, DO's NPI number?
Sheffey N. Massey, DO's National Provider Identifier (NPI) is 1609834365, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sheffey N. Massey, DO located?
The NPPES record lists a practice address at 1400 Bellinger St, Eau Claire, WI, 54703. Phone: (715) 838-5222. Providers update this record themselves, so call before visiting.
How can I verify Sheffey N. Massey, DO's license?
NPPES lists Wisconsin license number 40066, 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 Sheffey N. Massey, DO prescribe under Medicare Part D?
In 2024, Sheffey N. Massey, DO had 168 Medicare Part D claims for 138 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.