Ryan Conway Wassenaar, D.O.
Hospitalist Physician · Oak Ridge, TN
Ryan Conway Wassenaar, D.O. is a hospitalist physician with a practice address in Oak Ridge, Tennessee, and NPI 1457516288, issued on Jul 21, 2008. Check the license (Tennessee 2067, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ryan Conway Wassenaar
- Credential
- D.O.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 2067 TN
007164 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 990 Oak Ridge Tpke, Oak Ridge, TN 37830
- Phone
- (865) 835-4304
- Enumerated
- Jul 21, 2008
- Record last updated
- Aug 29, 2023
- Fax
- (865) 835-4303
- Medicare enrollment
- Enrolled (PECOS I20170309002700); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 426 in Tennessee → Look up another NPI →
Also registered at 990 Oak Ridge Tpke
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dell Bailey, CRNACertified Registered Nurse Anesthetist1316197882
- Jeff Baker, D.PH.Pharmacist1851311351
Verify Ryan Conway Wassenaar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 2067Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average hospitalist physician in 2024
23 Medicare Part D claims, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
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.
The MIPS final score for 2023 (Medicare payment program): 88 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Banner Hospital Based Physicians Arizona LLCSun City, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Conway Wassenaar among 426 hospitalist physician records in Tennessee
Ryan Conway Wassenaar, D.O. is one of 426 hospitalist physician records with a practice address in Tennessee. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 33% of them.
- NPI issued2008 · 33% of these records are older, 63% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2009 · median 2012 among the 356 with a school on file
- Record last updated2023 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Tennessee
There are 426 hospitalist physician records in Tennessee.
All 426 in Tennessee → Every provider in Oak Ridge → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Burton West, MDOak Ridge, TN 378301801874557
- Kevin Donovan, M.D.Maryville, TN 378041073969150
- Michael Floyd, M.D.Maryville, TN 378041861470809
- Kimberly Goodemote, M.D.Maryville, TN 378041902919293
- Lukas Mathews, MDMaryville, TN 378041639529514
- Chinonyelum Nwagbara, MDMaryville, TN 378041598253908
- Jack Roberts, MDMaryville, TN 378041013958917
- Nathaniel Runne, M.D.Maryville, TN 378041609255272
Common questions
What is Ryan Conway Wassenaar, D.O.'s NPI number?
Ryan Conway Wassenaar, D.O.'s National Provider Identifier (NPI) is 1457516288, issued on Jul 21, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Conway Wassenaar, D.O. located?
The NPPES record lists a practice address at 990 Oak Ridge Tpke, Oak Ridge, TN, 37830. Phone: (865) 835-4304. Providers update this record themselves, so call before visiting.
How can I verify Ryan Conway Wassenaar, D.O.'s license?
NPPES lists Tennessee license number 2067, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ryan Conway Wassenaar, D.O. prescribe under Medicare Part D?
In 2024, Ryan Conway Wassenaar, D.O. had 23 Medicare Part D claims; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Ryan Conway Wassenaar, D.O.'s MIPS final score?
The 2023 MIPS final score is 88 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.