Nicole Davis Riordan, M.D.
Emergency Medicine Physician · South Bend, IN
Nicole Davis Riordan, M.D. is an emergency medicine physician with a practice address in South Bend, Indiana, and NPI 1407051634, issued on Jun 18, 2007. Check the license (Indiana 01065523A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Nicole Davis Riordan
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 01065523A IN
Self-reported in NPPES; status is on the state search - Practice location
- 615 N Michigan St, South Bend, IN 46601
- Phone
- (574) 647-7459
- Enumerated
- Jun 18, 2007
- Record last updated
- Jun 27, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (574) 647-3658
- Medicaid ID
- 200981060 IN
- Medicare enrollment
- Enrolled (PECOS I20100714001072); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,293 in Indiana → Look up another NPI →
Also registered at 615 N Michigan St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lynn Alsatie, MDStudent in an Organized Health Care Education/Training Program1801647425
- Robert Austin, MDMaternal & Fetal Medicine Physician1083677439
- Kylie Bailey, MSN, FNPFamily Nurse Practitioner1982955563
- Algis Baliunas, MDEmergency Medicine Physician1871567842
- Madison Bedwell, CRNACertified Registered Nurse Anesthetist1952097339
- Michael Blakesley, MDEmergency Medicine Physician1275614570
Verify Nicole Davis Riordan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01065523ACheck 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 emergency medicine physician in 2024
137 Medicare Part D claims for 79 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Prednisone12 claims
- Cephalexin11 claims
- Lisinopril11 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: $23.63
1 payment: food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 12,335 providers of this specialty with any payment received $953.79 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
- South Bend Emergency Physicians IncSouth Bend, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicole Davis Riordan among 1,293 emergency medicine physician records in Indiana
Nicole Davis Riordan, M.D. is one of 1,293 emergency medicine physician records with a practice address in Indiana. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 49% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2012 among the 814 with a school on file
- Record last updated2016 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Indiana
There are 1,293 emergency medicine physician records in Indiana.
All 1,293 in Indiana → Every provider in South Bend → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Algis Baliunas, MDSouth Bend, IN 466011871567842
- Michael Blakesley, MDSouth Bend, IN 466011275614570
- William Farrell, MDSouth Bend, IN 466011417034968
- David Halperin, MDSouth Bend, IN 466011528145091
- Philip Kavanagh, DOSouth Bend, IN 466011174600555
- Robert King, MDSouth Bend, IN 466011902983323
- Jennifer Lackman-Chuppe, MDSouth Bend, IN 466011568428019
- Joseph Lee, M.D.South Bend, IN 466011326067976
Common questions
What is Nicole Davis Riordan, M.D.'s NPI number?
Nicole Davis Riordan, M.D.'s National Provider Identifier (NPI) is 1407051634, issued on Jun 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Nicole Davis Riordan, M.D. located?
The NPPES record lists a practice address at 615 N Michigan St, South Bend, IN, 46601. Phone: (574) 647-7459. Providers update this record themselves, so call before visiting.
How can I verify Nicole Davis Riordan, M.D.'s license?
NPPES lists Indiana license number 01065523A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nicole Davis Riordan, M.D. prescribe under Medicare Part D?
In 2024, Nicole Davis Riordan, M.D. had 137 Medicare Part D claims for 79 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.