DR. GARY THOMAS UNDERHILL (MD) – Family Medicine Physician, NPI 1851375265
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,206 EMERGENCY MEDICINE in WA
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Provider Addresses for DR. GARY THOMAS UNDERHILL (MD)
1025, South 2nd Avenue, Walla Walla, Walla Walla County, Washington, 99362, United States
WALLA WALLA, WA 993624116
Phone: (509) 525-0480
Fax: (509) 527-8195
Type: Location
Walla Walla Post Office, 85, Commercial Street, Walla Walla, Greater Hume Shire Council, New South Wales, 2659, Australia
WALLA WALLA, WA 993620309
Phone: (509) 525-0480
Type: Mailing
1012 S 3RD ST
DAYTON, WA 99328
Phone: (509) 382-2531
Fax: (509) 382-3205
Type: Mailing
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: 2007-08-27
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20070827000624 | I | Emergency Medicine | WA | 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 |
|---|---|---|---|---|
| 99285 | Emergency department visit with high level of medical decision making | 139 | 134 | $0 |
| 93010 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 121 | 115 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 64 | 63 | $0 |
| 99291 | Critical care, first 30-74 minutes | 30 | 29 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 20 | 14 | $0 |
Insurance plans in this area (ZIP 99362)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | ID | |
| Emergency Medicine, Family Practice | ID | |
| Emergency Medicine | WA | |
| Family Practice | OR |
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