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

Dr. Timothy Unterreiner, DNP

Individual provider Certified Registered Nurse Anesthetist · NPI 1154214096

Dr. Timothy Unterreiner, DNP is registered under Certified Registered Nurse Anesthetist (CRNA) in Montgomery, Ohio. Qualified in 2025, 1 year ago. Practices with Anesthesia Group Practice Inc, a 399-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
1
Licensed in
OH
In the registry since
2025
What do these letters mean?
DNP — Doctor of Nursing Practice
The highest clinical degree in nursing.

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Practice location Address checks out

10500 Montgomery Rd
Montgomery, OH 45242-4402
Phone: (513) 865-1111
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence APRN.CRNA.0021331 (OH)

Record details

NPI number1154214096
Entity typeIndividual (Type 1)
GenderMale
Credentials DNP
Sole proprietorYes
NPI enumeratedMay 30, 2025
Last updated in NPPESMay 30, 2025
Certification dateMay 30, 2025

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2025 (1 years in practice)
Group practice Anesthesia Group Practice Inc — 399 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 $21 1 payment · 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.

  • Bethesda North Hospital · Cincinnati, OH · listed as Bethesda North Hospital

Colleagues at Anesthesia Group Practice Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 399 clinicians in the practice; 12 are shown here.

Other providers in Montgomery