Emily J. Mason, M.D.
Emergency Medicine Physician · Chippewa Falls, WI
Emily J. Mason, M.D. is an emergency medicine physician with a practice address in Chippewa Falls, Wisconsin, and NPI 1811196637, issued on Jul 12, 2007. Check the license (Wisconsin 49707-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Emily J. Mason
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 49707-020 WI
49707-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2661 County Highway I, Chippewa Falls, WI 54729
- Phone
- (715) 861-0990
- Enumerated
- Jul 12, 2007
- Record last updated
- Feb 10, 2026
- Fax
- (715) 861-0274
- Medicare enrollment
- Enrolled (PECOS I20070817000650); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 2661 County Highway I
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Emily J. Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 49707-020Check 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 emergency medicine physician in 2024
22 Medicare Part D claims for 13 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $30.78
1 payment: food and beverage; the largest payer was Urgo Medical North America, LLC. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Oakleaf Clinics IncChippewa Falls, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Emily J. Mason among 1,464 emergency medicine physician records in Wisconsin
Emily J. Mason, M.D. 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 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 52% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2004 · median 2011 among the 844 with a school on file
- Record last updated2026 · 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).
Emergency Medicine Physician providers in Wisconsin
There are 1,464 emergency medicine physician records in Wisconsin.
All 1,464 in Wisconsin → Every provider in Chippewa Falls → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- James Peng, M.D.Chippewa Falls, WI 547291780871780
- Michael Walton, MDChippewa Falls, WI 547291497732085
- Ethan Young, D.O.Chippewa Falls, WI 547291053792895
- Joseph Williams, MDDurand, WI 547361902048671
- Matthew Borgo, M.D.Menomonie, WI 547511932424421
- Albert Hsiao, MDMenomonie, WI 547511144273285
- Jeffrey Ilsley, MDMenomonie, WI 547511194703991
- Marek Kaminski, M.D.Menomonie, WI 547511417996851
Common questions
What is Emily J. Mason, M.D.'s NPI number?
Emily J. Mason, M.D.'s National Provider Identifier (NPI) is 1811196637, issued on Jul 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Emily J. Mason, M.D. located?
The NPPES record lists a practice address at 2661 County Highway I, Chippewa Falls, WI, 54729. Phone: (715) 861-0990. Providers update this record themselves, so call before visiting.
How can I verify Emily J. Mason, M.D.'s license?
NPPES lists Wisconsin license number 49707-020, 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 Emily J. Mason, M.D. prescribe under Medicare Part D?
In 2024, Emily J. Mason, M.D. had 22 Medicare Part D claims for 13 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.