Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Timothy C Ryken, MD

Individual provider Neurological Surgery Physician · NPI 1235122359

Dr. Timothy C Ryken, MD is a Neurosurgery in Des Moines, Iowa. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1988, 38 years ago. Practices with Intermountain Medical Group Denver LLC, a 567-clinician group and accepts Medicare assignment. Licensed in Iowa and New Hampshire.

Years since qualifying
38
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
IA, NH
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1215 Pleasant St Ste 608
Des Moines, IA 50309-1418
Phone: (515) 241-5760
Fax: (515) 241-8161
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence 18138 (NH)
Neurological Surgery Physician Taxonomy 207T00000X · Licence MD-28456 (IA)

Record details

NPI number1235122359
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 24, 2005
Last updated in NPPESMarch 19, 2023
Certification dateMarch 19, 2023
Mailing address630 E Amherst Ave, Englewood, CO 80113-1654

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROSURGERY
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Intermountain Medical Group Denver Llc — 567 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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