Alexander Michael Riordan, M.D.
Orthopaedic Surgery Physician · Oak Creek, WI
Alexander Michael Riordan, M.D. is an orthopaedic surgery physician with a practice address in Oak Creek, Wisconsin, and NPI 1972879534, issued on Mar 28, 2012. Check the license (Wisconsin 61300-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Alexander Michael Riordan
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 61300-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 200 E Ryan RD, Oak Creek, WI 53154
- Phone
- (414) 570-3590
- Enumerated
- Mar 28, 2012
- Record last updated
- Jan 15, 2024
- Medicaid ID
- 100034181 WI
- Medicare enrollment
- Enrolled (PECOS I20170727000470); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 656 in Wisconsin → Look up another NPI →
Also registered at 200 E Ryan RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rebecca Fox, DPTPhysical Therapist1356199764
Verify Alexander Michael Riordan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 61300-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
210 Medicare Part D claims for 97 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 84 claims were for opioids.
Most prescribed
- Oxycodone Hcl34 claims
- Amoxicillin32 claims
- Tramadol Hcl25 claims
- Celecoxib24 claims
- Hydrocodone-Acetaminophen17 claims
- Meloxicam15 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: $169.85
1 payment: food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 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
- Aurora Advanced Healthcare, Inc.Milwaukee, WI
- Lakeshore Medical Clinic LLCOak Creek, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Michael Riordan among 656 orthopaedic surgery physician records in Wisconsin
Alexander Michael Riordan, M.D. is one of 656 orthopaedic surgery physician records with a practice address in Wisconsin. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 75% of them.
- NPI issued2012 · 75% of these records are older, 21% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2012 · median 2006 among the 401 with a school on file
- Record last updated2024 · 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 207X00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Wisconsin
There are 656 orthopaedic surgery physician records in Wisconsin.
All 656 in Wisconsin → Every provider in Oak Creek → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Joseph Kelly, DONew Berlin, WI 531511164917779
- Mhd Alsawaf, MBBS, MDPleasant Prairie, WI 531581144411653
- Jonathan Ben-Zev, M.D.Pleasant Prairie, WI 531581245681949
- Alan Gegenheimer, D.O.Pleasant Prairie, WI 531581730119561
- Michael Jacker, M.D.Pleasant Prairie, WI 531581235164328
- Andrew Rizzi, MDPleasant Prairie, WI 531581508350190
- Scott Simmons, MDPleasant Prairie, WI 531581528175726
- Jonathan Erickson, M.D.Lake Geneva, WI 531471255794533
Common questions
What is Alexander Michael Riordan, M.D.'s NPI number?
Alexander Michael Riordan, M.D.'s National Provider Identifier (NPI) is 1972879534, issued on Mar 28, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Michael Riordan, M.D. located?
The NPPES record lists a practice address at 200 E Ryan RD, Oak Creek, WI, 53154. Phone: (414) 570-3590. Providers update this record themselves, so call before visiting.
How can I verify Alexander Michael Riordan, M.D.'s license?
NPPES lists Wisconsin license number 61300-20, 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 Alexander Michael Riordan, M.D. prescribe under Medicare Part D?
In 2024, Alexander Michael Riordan, M.D. had 210 Medicare Part D claims for 97 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.