Timothy C. Ryken, MD
Neurological Surgery Physician · Des Moines, IA
Timothy C. Ryken, MD is a neurological surgery physician with a practice address in Des Moines, Iowa, and NPI 1235122359, issued on Aug 24, 2005. Check the license (Iowa MD-28456, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Timothy C. Ryken
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License numbers
- MD-28456 IA
18138 NH
Self-reported in NPPES; status is on the state search - Practice location
- 1215 Pleasant St Ste 608, Des Moines, IA 50309
- Phone
- (515) 241-5760
- Enumerated
- Aug 24, 2005
- Record last updated
- Mar 19, 2023
- Fax
- (515) 241-8161
- Medicaid IDs
- 1030057 VT
3109341 NH - Medicare enrollment
- Enrolled (PECOS I20230313002495); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 70 in Iowa → Look up another NPI →
Also registered at 1215 Pleasant St Ste 608
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Boarini, M.D.Neurological Surgery Physician1205829819
- Madeline Heaton, PAPhysician Assistant1023812351
- Michael McDonaldPhysician Assistant1265155154
- Amanda OwensPhysician Assistant1609400324
- Sophie PouliotPhysician Assistant1538880778
- Scott Seaman, M.D.Neurological Surgery Physician1790132132
Verify Timothy C. Ryken in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license MD-28456Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average neurological surgery physician in 2024
27 Medicare Part D claims for 12 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 14 claims were for opioids.
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: $9,628.40
17 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
- Intermountain Medical Group Denver LLCWheat Ridge, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy C. Ryken among 70 neurological surgery physician records in Iowa
Timothy C. Ryken, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 80% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated1988 · median 2004 among the 31 with a school on file
- Record last updated2023 · 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 Des Moines → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- David Boarini, M.D.Des Moines, IA 503091205829819
- Thomas Carlstrom, M.D.Des Moines, IA 503091215920780
- David Christianson, MDDes Moines, IA 503091134613466
- John Piper, M.D.Des Moines, IA 503091740276773
- Scott Seaman, M.D.Des Moines, IA 503091790132132
- Joseph Sherrill, MDDes Moines, IA 503091407823131
- Royce Woodroffe, M.D.Des Moines, IA 503091285048249
- Einar Bogason, M.D.Des Moines, IA 503141881823052
Common questions
What is Timothy C. Ryken, MD's NPI number?
Timothy C. Ryken, MD's National Provider Identifier (NPI) is 1235122359, issued on Aug 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Timothy C. Ryken, MD located?
The NPPES record lists a practice address at 1215 Pleasant St Ste 608, Des Moines, IA, 50309. Phone: (515) 241-5760. Providers update this record themselves, so call before visiting.
How can I verify Timothy C. Ryken, MD's license?
NPPES lists Iowa license number MD-28456, 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 Timothy C. Ryken, MD prescribe under Medicare Part D?
In 2024, Timothy C. Ryken, MD had 27 Medicare Part D claims for 12 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.