DR. RYAN CONWAY WASSENAAR (D.O.) – Hospitalist Physician, NPI 1457516288
Hospitalist Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,585 INTERNAL MEDICINE in AZ
Provider Addresses for DR. RYAN CONWAY WASSENAAR (D.O.)
5880 S Hospital Dr
Globe, AZ 855019447
Phone: (928) 425-3261
Fax: (866) 368-6349
Type: Location
119, Heritage Drive, Oak Ridge, Anderson County, Tennessee, 37830, United States
OAK RIDGE, TN 378307965
Phone: (865) 804-1902
Type: Mailing
Methodist Medical Center of Oak Ridge, 990, Oak Ridge Turnpike, Jackson Square, Oak Ridge, Anderson County, Tennessee, 37831, United States
OAK RIDGE, TN 378306976
Phone: (865) 835-4304
Fax: (865) 835-4303
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2017-03-09
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20090817000576 | I | Internal Medicine | TN | TBD |
| I20170309002700 | I | Internal Medicine | AZ | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 19 | 19 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 | $0 |
Insurance plans in this area (ZIP 85501)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | AZ | |
| Psychiatry, Internal Medicine | AZ | |
| Internal Medicine, Pulmonary Disease, Critical Care (Intensivists) | AZ | |
| Diagnostic Radiology | AZ | |
| Internal Medicine, Hospitalist | AZ | |
| P S Y C H I A T R Y | AZ | |
| Internal Medicine | AZ | |
| H O S P I T A L I S T | NM | |
| - | AZ | |
| Internal Medicine | AZ |
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