Matthew Christopher O'Brien, DO
Surgery Physician · Janesville, WI
Matthew Christopher O'Brien, DO is a surgery physician with a practice address in Janesville, Wisconsin, and NPI 1417577024, issued on Apr 23, 2020. Check the license (Wisconsin 81821, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Matthew Christopher O'Brien
- Credential
- DO
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 81821 WI
Self-reported in NPPES; status is on the state search - Practice location
- 3200 E Racine St, Janesville, WI 53546
- Phone
- (608) 371-8000
- Enumerated
- Apr 23, 2020
- Record last updated
- Oct 8, 2025
- Fax
- (608) 373-8713
- Medicare enrollment
- Enrolled (PECOS I20250930000475); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2020
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 726 in Wisconsin → Look up another NPI →
Also registered at 3200 E Racine St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Omar Alnaser, M.D.Pediatrics Physician1396474201
- Jenny Amani, M.D.Occupational Medicine Physician1629212899
- Molly ArttusPhysician Assistant1366233041
- Brittany Austin, PA-CMedical Physician Assistant1013226968
- Timothy Axe, DPMPodiatrist1619932621
- Susan Baird, DNP, APRN, FNP-BCNurse Practitioner1225305758
Verify Matthew Christopher O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 81821Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average surgery physician in 2024
25 Medicare Part D claims for 19 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Oxycodone Hcl11 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: $25.00
1 payment: food and beverage; the largest payer was Bard Peripheral Vascular, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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
- Dean Health Systems IncJanesville, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Christopher O'Brien among 726 surgery physician records in Wisconsin
Matthew Christopher O'Brien, DO is one of 726 surgery physician records with a practice address in Wisconsin. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 91% of them.
- NPI issued2020 · 91% of these records are older, 8% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2020 · median 2006 among the 446 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Wisconsin
There are 726 surgery physician records in Wisconsin.
All 726 in Wisconsin → Every provider in Janesville → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Mark McDade, MDJanesville, WI 535461326081407
- Tabitha OngstadJanesville, WI 535461811301997
- David Rainiero, MDJanesville, WI 535461679534234
- Michael Rainiero, MDJanesville, WI 535461588607675
- Steven Falk, MDJanesville, WI 535451588747273
- Brigham Douglas, M.D.Janesville, WI 535481265748883
- David Lynn, MDJanesville, WI 535481316151897
- Michael McGauley, DOJanesville, WI 535481851346191
Common questions
What is Matthew Christopher O'Brien, DO's NPI number?
Matthew Christopher O'Brien, DO's National Provider Identifier (NPI) is 1417577024, issued on Apr 23, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Christopher O'Brien, DO located?
The NPPES record lists a practice address at 3200 E Racine St, Janesville, WI, 53546. Phone: (608) 371-8000. Providers update this record themselves, so call before visiting.
How can I verify Matthew Christopher O'Brien, DO's license?
NPPES lists Wisconsin license number 81821, 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 Matthew Christopher O'Brien, DO prescribe under Medicare Part D?
In 2024, Matthew Christopher O'Brien, DO had 25 Medicare Part D claims for 19 beneficiaries; the average among surgery physician prescribers was 147. 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.