Doctor profile · Federal record
Dr. Ryan Wassenaar, D.O.
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Oak Ridge, TN
- NPI 1457516288
- Accepts Medicare
- MIPS 87.0 / 100 · 2023
- 17 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
990 Oak Ridge Tpke
Oak Ridge, TN 378306976
(865) 835-4304
fax (865) 835-4303 - Additional location
-
5880 S Hospital Dr
Globe, AZ 855019447
(928) 425-3261
fax (866) 368-6349 - Mailing address
-
119 Heritage Dr
Oak Ridge, TN 378307965
Credentials & registration
- NPI registered
- July 2008 — 18 yrs on file
- Profile last updated
- August 29, 2023
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State licenses (2)
- Tennessee #2067 · Arizona #007164
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1457516288. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
33
Distinct HCPCS
2
Medicare allowed
$4,930
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 19 | 19 | $168 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 | $125 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 16. This provider delivers 2.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
201
Patients
41
Total drug cost
$16,042
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 25 | 0 | $289 |
| Eliquis (Apixaban) | Brand | 23 | 0 | $13,785 |
| Losartan Potassium | Generic | 18 | 0 | $166 |
| Metoprolol Succinate | Generic | 17 | 14 | $256 |
| Cefdinir | Generic | 16 | 15 | $219 |
| Donepezil Hcl | Generic | 16 | 0 | $144 |
| Atorvastatin Calcium | Generic | 15 | 0 | $168 |
| Metoprolol Tartrate | Generic | 14 | 0 | $68 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 12 | 12 | $107 |
| Olanzapine | Generic | 12 | 0 | $466 |
Frequently asked questions
What is Dr. Ryan Wassenaar's medical specialty?
Dr. Ryan Wassenaar practices Hospitalist Physician in Oak Ridge, TN.
Where does Dr. Ryan Wassenaar practice?
Dr. Ryan Wassenaar practices at 990 Oak Ridge Tpke, Oak Ridge, TN 378306976. Office phone: 8658354304.
What is Dr. Ryan Wassenaar's NPI?
Dr. Ryan Wassenaar's National Provider Identifier (NPI) is 1457516288, issued by NPPES.
Does Dr. Ryan Wassenaar accept Medicare assignment?
Yes. Dr. Ryan Wassenaar accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ryan Wassenaar commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.