Catherine Ann Miller-Simington, M.D.
Neurological Surgery Physician · Dubuque, IA
Catherine Ann Miller-Simington, M.D. is a neurological surgery physician with a practice address in Dubuque, Iowa, and NPI 1114244720, issued on Apr 23, 2010. Check the license (Iowa 49883, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Catherine Ann Miller-Simington
- Credential
- M.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License numbers
- 49883 IA
A145218 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Delhi St Ste 4300, Dubuque, IA 52001
- Phone
- (563) 557-5971
- Enumerated
- Apr 23, 2010
- Record last updated
- Aug 25, 2022
- Fax
- (563) 557-5973
- Medicare enrollment
- Enrolled (PECOS I20220920001914); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2010
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 70 in Iowa → Look up another NPI →
Also registered at 1500 Delhi St Ste 4300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carrie HessePhysician Assistant1841828613
- Christine Horchak, P.A.-CMedical Physician Assistant1508811894
Verify Catherine Ann Miller-Simington in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 49883Check 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% more Medicare Part D claims than the average neurological surgery physician in 2024
175 Medicare Part D claims for 78 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. 74 claims were for opioids.
Most prescribed
- Tizanidine Hcl47 claims
- Hydrocodone-Acetaminophen42 claims
- Oxycodone Hcl24 claims
- Cyclobenzaprine 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: $162.27
7 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 5,377 providers of this specialty with any payment received $14,925.58 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
- The Finley HospitalDubuque, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Ann Miller-Simington among 70 neurological surgery physician records in Iowa
Catherine Ann Miller-Simington, M.D. is one of 70 neurological surgery physician records with a practice address in Iowa. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 46% of them.
- NPI issued2010 · 46% of these records are older, 51% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated2010 · median 2004 among the 31 with a school on file
- Record last updated2022 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in Iowa
There are 70 neurological surgery physician records in Iowa.
All 70 in Iowa → Every provider in Dubuque → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Brian Dlouhy, M.D.Iowa City, IA 522421619175148
- Kathleen Dlouhy, M.D.Iowa City, IA 522421801182977
- Jeremy Greenlee, MDIowa City, IA 522421053304170
- Patrick Hitchon, MDIowa City, IA 522421043203177
- Matthew Howard, MDIowa City, IA 522421770576803
- Hiroto Kawasaki, MDIowa City, IA 522421982697009
- Ziyad Mohaidat, M.B.B.SIowa City, IA 522421467643346
- Hiroyuki Oya, MDIowa City, IA 522421689667701
Common questions
What is Catherine Ann Miller-Simington, M.D.'s NPI number?
Catherine Ann Miller-Simington, M.D.'s National Provider Identifier (NPI) is 1114244720, issued on Apr 23, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Ann Miller-Simington, M.D. located?
The NPPES record lists a practice address at 1500 Delhi St Ste 4300, Dubuque, IA, 52001. Phone: (563) 557-5971. Providers update this record themselves, so call before visiting.
How can I verify Catherine Ann Miller-Simington, M.D.'s license?
NPPES lists Iowa license number 49883, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Catherine Ann Miller-Simington, M.D. prescribe under Medicare Part D?
In 2024, Catherine Ann Miller-Simington, M.D. had 175 Medicare Part D claims for 78 beneficiaries; the average among neurological surgery physician prescribers was 172. 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.