Dr. Catherine Ann Miller-Simington, MD
- Medicare services, 2024
- 357
- Medicare patients, 2024
- 96
- Part D claims, 2024
- 175
- Hospital affiliations
- 1
- Industry payments
- $6,053
- Practice address
- 350 North Grandview Avenue, Dubuque, IA 52001
- Practice phone
- Call (563) 582-1881
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Miller-Simington's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Catherine Ann Miller-Simington is a neurosurgeon in Dubuque, Iowa
Dr. Miller-Simington practices at UnityPoint Health - Finley Hospital in Dubuque, Iowa, part of UnityPoint Health.
Dr. Miller-Simington's NPI, 1114244720, was assigned on April 23, 2010. Dr. Miller-Simington graduated from Rush Medical College of Rush University in 2010. Dr. Miller-Simington holds Iowa license 49883.
- NPI
- 1114244720NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719281203
- NPI enumeration date
- April 23, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (563) 582-1881
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Catherine Ann Miller-Simington practices at UnityPoint Health - Finley Hospital in Dubuque, Iowa
Dr. Miller-Simington's primary practice is UnityPoint Health - Finley Hospital, at 350 North Grandview Avenue, Dubuque, IA 52001 in Dubuque County. The practice phone is (563) 582-1881.
- UnityPoint Health - Finley Hospital350 North Grandview Avenue, Dubuque, IA 52001 · Dubuque CountyPhone(563) 582-1881
Source: Dmand AI Affiliation Data
Dr. Catherine Ann Miller-Simington is affiliated with 4 sites of care and 5 medical groups
Dr. Miller-Simington's primary practice is UnityPoint Health - Finley Hospital in Dubuque, Iowa, part of UnityPoint Health. The medical group on file is UnityPoint Clinic. Dmand AI also links Dr. Miller-Simington to 4 more medical groups, 2 group practices and clinics and 1 dialysis center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Catherine Ann Miller-Simington's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Miller-Simington practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UnityPoint Health - Finley Hospital | Available with a free account |
| +3 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across UnityPoint Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Catherine Ann Miller-Simington is one of 61 neurosurgeons in Iowa
Neurological surgery is Dr. Miller-Simington's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dmand AI has Dr. Miller-Simington's licenses on file in 2 states: Iowa and California.
Specialties and state licenses
- Neurological surgery, IowaPrimary
- California license
Neurosurgeons near Dr. Miller-Simington
Counts of neurosurgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Catherine Ann Miller-Simington billed Medicare for 357 services in 2024
CMS data shows 357 Medicare services from Dr. Miller-Simington across 5 procedure codes in 2024, for 96 Medicare patients. Medicare paid $37,150 for them.
Dr. Miller-Simington's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 1112024: 19979%
- Office and hospital visits
- 2023: 822024: 9111%
- Surgery
- 2023: 02024: 67
Where Dr. Miller-Simington's Medicare services took place, 2024
- In an office29081%
- In a facility6719%
Dr. Miller-Simington compared with the Iowa median for neurosurgeons, 2024
- Dr. Miller-Simington
- Iowa median
- Medicare services
- 357vs 29322% above
- Medicare patients
- 96vs 19551% below
- Part D claims
- 124vs 363.4 times
Medians across 56 neurosurgeons in Iowa with Dmand AI profiles that report each measure.
Dr. Miller-Simington's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Miller-Simington?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Miller-Simington and other neurosurgeons in Iowa.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Catherine Ann Miller-Simington treated 96 Medicare patients in 2024, average age 73
CMS counts 96 Medicare patients who saw Dr. Miller-Simington in 2024. The largest group is 65 to 74, with 52 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 0.92, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Miller-Simington's median patient age at 72, with 46% women.
Dr. Miller-Simington's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Miller-Simington's Medicare patients by sex, 2024
- Women5254%
- Men4446%
Chronic conditions among Dr. Miller-Simington's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Mood disorders36%
- Depression34%
- Diabetes34%
- Anxiety31%
- Osteoporosis23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Miller-Simington's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Catherine Ann Miller-Simington wrote 175 Medicare Part D claims in 2024
In 2024, Dr. Miller-Simington wrote 175 Medicare Part D claims for 78 patients. 98% of them were for generic drugs. CMS names the drug for 124 of them, across 4 drugs with 11 or more claims each, at $1,028 in total drug cost. In 2023, CMS named 69 claims across 3 drugs.
Dr. Miller-Simington's Part D claims by kind of drug, 2024
- Generic172 claims98%
- Brand-name and other3 claims2%
Dr. Miller-Simington's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Miller-Simington's Part D claims, 2024
- Opioids42%74 of 175 claims
- Antibiotics6%11 of 175 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 692024: 12480%
Drugs named by CMS: 4 in 2024, 3 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Catherine Ann Miller-Simington ranks in the 93rd percentile for spinal fusion in Medicare
Dr. Miller-Simington accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 244 procedures of spinal fusion by Dr. Miller-Simington, more than 93% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Miller-Simington ranks in Medicare procedure volume
- Spinal fusion
- 93rd percentile244 procedures
- Laminectomy or laminotomy (partial removal of spine bones)
- 90th percentile80 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Catherine Ann Miller-Simington received $6,053 in industry payments from 2016 to 2025
CMS Open Payments shows 66 general payments to Dr. Miller-Simington from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 66% of the total. Spineart USA Inc paid the most, $3,793.
General payments to Dr. Miller-Simington by program year, 2016 to 2025
General payments to Dr. Miller-Simington by kind, 2016 to 2025
- Food and beverage$3,99466%
- Travel and lodging$2,05834%
Companies that paid Dr. Miller-Simington the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Catherine Ann Miller-Simington graduated from Rush Medical College of Rush University
Dr. Miller-Simington graduated from Rush Medical College of Rush University in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Catherine Ann Miller-Simington's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Catherine Ann Miller-Simington
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Catherine Ann Miller-Simington's NPI number?
Dr. Catherine Ann Miller-Simington's NPI number is 1114244720. It was assigned on April 23, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Catherine Ann Miller-Simington?
Dr. Catherine Ann Miller-Simington is a neurosurgeon in Dubuque, Iowa. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Catherine Ann Miller-Simington practice?
Dr. Miller-Simington practices at 350 North Grandview Avenue, Dubuque, IA 52001. Dr. Miller-Simington's primary practice is UnityPoint Health - Finley Hospital in Dubuque, Iowa, part of UnityPoint Health. Dmand AI also links Dr. Miller-Simington to 4 medical groups, 2 group practices and clinics and 1 dialysis center.
What is Dr. Catherine Ann Miller-Simington's office phone number?
The practice phone on file for Dr. Miller-Simington is (563) 582-1881.
What is Dr. Catherine Ann Miller-Simington's medical license number?
Dr. Miller-Simington holds Iowa license 49883, one of the licenses on file in 2 states.
Which states has Dr. Catherine Ann Miller-Simington been licensed in?
Dmand AI has state licenses on file for Dr. Miller-Simington in Iowa and California.
Which hospitals is Dr. Catherine Ann Miller-Simington affiliated with?
Dr. Miller-Simington practices at UnityPoint Health - Finley Hospital in Dubuque, Iowa.
What medical group is Dr. Catherine Ann Miller-Simington part of?
Dr. Miller-Simington is linked to UnityPoint Clinic. Dmand AI links Dr. Miller-Simington to 4 more medical groups.
Does Dr. Catherine Ann Miller-Simington accept Medicare?
Yes. CMS data shows Dr. Miller-Simington billed Medicare for 357 services in 2024, and Dr. Miller-Simington accepts Medicare assignment.
How many Medicare patients does Dr. Catherine Ann Miller-Simington see?
CMS counts 96 Medicare patients who saw Dr. Miller-Simington in 2024, with an average age of 73.
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What services does Dr. Catherine Ann Miller-Simington bill to Medicare?
In 2024, Dr. Miller-Simington's most billed Medicare services were medicare service (G2212), office visit, established patient (99215) and surgery: brain, spine and nerves (63048).
Where did Dr. Catherine Ann Miller-Simington go to medical school?
Dr. Miller-Simington graduated from Rush Medical College of Rush University in 2010.
What drugs does Dr. Catherine Ann Miller-Simington prescribe most?
In 2024 Medicare Part D data, Dr. Miller-Simington's most prescribed drugs by claims were Tizanidine HCl, Hydrocodone-Acetaminophen and Oxycodone HCl.
Has Dr. Catherine Ann Miller-Simington received payments from drug or device companies?
CMS Open Payments shows $6,053 in general payments to Dr. Miller-Simington from 14 companies from 2016 to 2025. The largest total came from Spineart USA Inc.
How long has Dr. Catherine Ann Miller-Simington been practicing?
Dr. Miller-Simington graduated from medical school in 2010, 16 years ago.
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