Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. John Thomas Stimmler, DO

Individual provider Anesthesiology Physician · NPI 1336227255

Dr. John Thomas Stimmler, DO practises Anesthesiology in Iowa City, Iowa. Graduated from Lake Erie College of Osteopathic Medicine, Erie in 2005, 21 years ago. Practices with US Anesthesia Partners of Colorado Inc, a 479-clinician group and accepts Medicare assignment. Licensed in Colorado and Virginia.

Years since qualifying
21
Trained at
Lake Erie College of Osteopathic Medicine, Erie
Licensed in
CO, VA
In the registry since
2006
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

200 Hawkins Dr
Iowa City, IA 52242-1007 Not confirmed with CMS for 13 years — call before visiting
Phone: (319) 356-2633
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence DR0052046 (CO)
Anesthesiology Physician Taxonomy 207L00000X · Licence 0102201894 (VA)

Record details

NPI number1336227255
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedNovember 1, 2006
Last updated in NPPESJuly 30, 2013

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Graduated 2005 (21 years in practice)
Group practice Us Anesthesia Partners Of Colorado Inc — 479 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients188
Services billed 263 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $78 3 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Centura Health-Penrose St Francis Health Services Hospital · Colorado Springs, CO
  • St Francis Hospital - Interquest Hospital · Colorado Springs, CO

Colleagues at US Anesthesia Partners of Colorado Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 479 clinicians in the practice; 12 are shown here.

Other providers in Iowa City