Joanna Mattis, M.D.
Epilepsy Physician · Ann Arbor, MI
Joanna Mattis, M.D. is an epilepsy physician with a practice address in Ann Arbor, Michigan, and NPI 1245626449, issued on Apr 14, 2015. Check the license (Michigan 4301506606, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Joanna Mattis
- Credential
- M.D.
- Primary taxonomy
- Epilepsy Physician 2084E0001X
- License numbers
- 4301506606 MI
MD467512 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Phone
- (734) 936-4000
- Enumerated
- Apr 14, 2015
- Record last updated
- Dec 30, 2024
- Medicare enrollment
- Enrolled (PECOS I20220622001731); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest epilepsy physician records → All 40 in Michigan → Look up another NPI →
Also registered at 1500 E Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joanna Mattis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301506606Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average epilepsy physician in 2024
628 Medicare Part D claims for 58 beneficiaries, against an average of 934 among the 476 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Levetiracetam103 claims
- Clobazam83 claims
- Lacosamide51 claims
- Xcopri49 claims
- Lamotrigine46 claims
- Carbamazepine Er25 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
- Regents OF The University OF MichiganAnn Arbor, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joanna Mattis among 40 epilepsy physician records in Michigan
Joanna Mattis, M.D. is one of 40 epilepsy physician records with a practice address in Michigan. 98% 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 63% of them.
- NPI issued2015 · 63% of these records are older, 30% newer
- In a Medicare fileYes · 98% of these records are
- In the CMS Doctors and Clinicians fileYes · 98% of these records are
- Graduated2015 · median 2012 among the 39 with a school on file
- Record last updated2024 · 0% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084E0001X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Epilepsy Physician providers in Michigan
There are 40 epilepsy physician records in Michigan.
All 40 in Michigan → Every provider in Ann Arbor → Epilepsy Physician nationwide →
The 8 epilepsy physician records with the nearest ZIP codes
- Nicholas Beimer, M.D.Ann Arbor, MI 481091538484829
- Giulia Benedetti, MDAnn Arbor, MI 481091952661944
- Louis Dang, MDAnn Arbor, MI 481091295900876
- Simon Glynn, MDAnn Arbor, MI 481091124173026
- Chloe Hill, MDAnn Arbor, MI 481091194046094
- Daniel Kenney-Jung, MDAnn Arbor, MI 481091063644771
- Nancy McNamara, MDAnn Arbor, MI 481091316268527
- Temenuzhka Mihaylova, MD. PHDAnn Arbor, MI 481091639458961
Common questions
What is Joanna Mattis, M.D.'s NPI number?
Joanna Mattis, M.D.'s National Provider Identifier (NPI) is 1245626449, issued on Apr 14, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Joanna Mattis, M.D. located?
The NPPES record lists a practice address at 1500 E Medical Center Dr, Ann Arbor, MI, 48109. Phone: (734) 936-4000. Providers update this record themselves, so call before visiting.
How can I verify Joanna Mattis, M.D.'s license?
NPPES lists Michigan license number 4301506606, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joanna Mattis, M.D. prescribe under Medicare Part D?
In 2024, Joanna Mattis, M.D. had 628 Medicare Part D claims for 58 beneficiaries; the average among epilepsy physician prescribers was 934. 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.