Ryan Tomas Brennan, D.O.
Neurology Physician · Milwaukee, WI
Ryan Tomas Brennan, D.O. is a neurology physician with a practice address in Milwaukee, Wisconsin, and NPI 1649561978, issued on Apr 20, 2011. Check the license (Wisconsin 60539, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Ryan Tomas Brennan
- Credential
- D.O.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 60539 WI
1306 NE
Self-reported in NPPES; status is on the state search - Practice location
- 9200 W Wisconsin Avenue, Milwaukee, WI 53226
- Phone
- (414) 805-5200
- Enumerated
- Apr 20, 2011
- Record last updated
- Jul 21, 2022
- Fax
- (414) 259-0469
- Medicare enrollment
- Enrolled (PECOS I20170620003266); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 399 in Wisconsin → Look up another NPI →
Also registered at 9200 W Wisconsin Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ryan Tomas Brennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 60539Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average neurology physician in 2024
2,865 Medicare Part D claims for 372 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 12 claims were for opioids.
Most prescribed
- Carbidopa-Levodopa709 claims
- Rytary364 claims
- Carbidopa-Levodopa Er300 claims
- Gabapentin187 claims
- Clonazepam122 claims
- Amantadine83 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.
Industry payments in 2024: $6,622.96
15 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,858 providers of this specialty with any payment received $8,318.07 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 2 group practices
- Froedtert Andthe Medical College OF Wisconsin Community Physicians IncNew Berlin, WI
- The Medical College OF Wisconsin IncMilwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Tomas Brennan among 399 neurology physician records in Wisconsin
Ryan Tomas Brennan, D.O. is one of 399 neurology physician records with a practice address in Wisconsin. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 63% of them.
- NPI issued2011 · 63% of these records are older, 35% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2011 · median 2005 among the 274 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Wisconsin
There are 399 neurology physician records in Wisconsin.
All 399 in Wisconsin → Every provider in Milwaukee → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Piero Antuono, MDMilwaukee, WI 532261750332268
- Paul Barkhaus, MDMilwaukee, WI 532261205887601
- Humberto Battistini, MDMilwaukee, WI 532261174574594
- Jeffrey Binder, MDMilwaukee, WI 532261679524029
- Karen Blindauer, MDMilwaukee, WI 532261699726034
- Diane Book, MDMilwaukee, WI 532261396796744
- Malgorzata Franczak, MDMilwaukee, WI 532261558312488
- Kurt Hecox, MDMilwaukee, WI 532261164473997
Common questions
What is Ryan Tomas Brennan, D.O.'s NPI number?
Ryan Tomas Brennan, D.O.'s National Provider Identifier (NPI) is 1649561978, issued on Apr 20, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Tomas Brennan, D.O. located?
The NPPES record lists a practice address at 9200 W Wisconsin Avenue, Milwaukee, WI, 53226. Phone: (414) 805-5200. Providers update this record themselves, so call before visiting.
How can I verify Ryan Tomas Brennan, D.O.'s license?
NPPES lists Wisconsin license number 60539, 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 Ryan Tomas Brennan, D.O. prescribe under Medicare Part D?
In 2024, Ryan Tomas Brennan, D.O. had 2,865 Medicare Part D claims for 372 beneficiaries; the average among neurology physician prescribers was 1,370. 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.