Gary Michael Nissen, MD
Anesthesiology Physician · Springfield, OR
Gary Michael Nissen, MD is an anesthesiology physician with a practice address in Springfield, Oregon, and NPI 1124550520, issued on Apr 3, 2017. Check the license (Oregon MD203881, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gary Michael Nissen
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- MD203881 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3333 Riverbend Dr, Springfield, OR 97477
- Phone
- (541) 681-5124
- Enumerated
- Apr 3, 2017
- Record last updated
- Mar 22, 2022
- Medicare enrollment
- Enrolled (PECOS I20210721000336); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 969 in Oregon → Look up another NPI →
Also registered at 3333 Riverbend Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Casey Aaby, PHARMDPharmacist1114735909
- Dominic Adams, PT, DPTPhysical Therapist1164231882
- Ana Maria Aguilar Messick, PHARMDPharmacist1922957323
- Jared Alexander, MDAnesthesiology Physician1265010102
- Kevin Allan, M.D.Emergency Medicine Physician1023549466
- Courtney ApkerFamily Nurse Practitioner1104363878
Verify Gary Michael Nissen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD203881Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Northwest Anesthesia Physicians PCSpringfield, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Michael Nissen among 969 anesthesiology physician records in Oregon
Gary Michael Nissen, MD is one of 969 anesthesiology physician records with a practice address in Oregon. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 85% of them.
- NPI issued2017 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2017 · median 2009 among the 627 with a school on file
- Record last updated2022 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
87 anesthesiology physician records list a practice address in Springfield
They are 87 of the 2,209 NPPES records with a practice address in Springfield, and 969 anesthesiology physician records in Oregon.
All 969 in Oregon → Every provider in Springfield → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Stephen Aufderheide, MDSpringfield, OR 974771215967625
- Lloyd Biby, M.D.Springfield, OR 974771194722785
- Mark Bodily, MDSpringfield, OR 974771033147129
- Charles Cook, MDSpringfield, OR 974771275508574
- Richard Finkelstein, MDSpringfield, OR 974771245265370
- Daniel Hagengruber, MDSpringfield, OR 974771073543732
- Holger Hennig, MDSpringfield, OR 974771619961398
- John Melton, MDSpringfield, OR 974771609801935
Common questions
What is Gary Michael Nissen, MD's NPI number?
Gary Michael Nissen, MD's National Provider Identifier (NPI) is 1124550520, issued on Apr 3, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Gary Michael Nissen, MD located?
The NPPES record lists a practice address at 3333 Riverbend Dr, Springfield, OR, 97477. Phone: (541) 681-5124. Providers update this record themselves, so call before visiting.
How can I verify Gary Michael Nissen, MD's license?
NPPES lists Oregon license number MD203881, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.