Joanna Mattis, M.D.
NPI 1245626449 · Epilepsy Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanna Mattis, M.D. is a Epilepsy Physician provider in Ann Arbor, MI (NPI 1245626449).
Provider details
- NPI number
- 1245626449
- Entity type
- Individual
- Primary specialty
- Epilepsy PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD467512 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
30 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Electrocardiogram (ecg) 1 to 3 Leads With Review By Physician Only93042 | 30 | $7 |
Typical Medicare-allowed amounts for these services range $7–$7 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levetiracetam | 103 | 22 |
| Clobazam | 83 | — |
| Lacosamide | 51 | — |
| Cenobamatebrand: Xcopri | 49 | — |
| Lamotrigine | 46 | — |
| Carbamazepinebrand: Carbamazepine Er | 25 | — |
| Clonazepam | 24 | — |
| Eslicarbazepine Acetatebrand: Aptiom |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-14
- Last updated
- 2024-12-30
- Certified
- 2024-12-30
Frequently asked questions
- What is Joanna Mattis's NPI number?
- Joanna Mattis's National Provider Identifier (NPI) is 1245626449, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Mattis's specialty?
- Joanna Mattis is listed in the NPPES registry with a primary specialty of Epilepsy Physician (Allopathic & Osteopathic Physicians).
- Where is Joanna Mattis located?
- Joanna Mattis's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Joanna Mattis's phone number?
- The practice phone number listed in the NPPES registry for Joanna Mattis is (734) 936-4000.
- Does Joanna Mattis accept Medicare?
- Joanna Mattis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanna Mattis's NPI active?
- Yes — Joanna Mattis's NPI (1245626449) is active in the NPPES registry as of the last update on 2024-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.