DR. CLIFFORD G WILLIAMSON (MD) – Emergency Medicine Physician, NPI 1154562304
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,131 EMERGENCY MEDICINE in TN
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Provider Addresses for DR. CLIFFORD G WILLIAMSON (MD)
325, North State of Franklin Road, The Y, Johnson City, Washington County, East Tennessee, Tennessee, 37604, United States
JOHNSON CITY, TN 376046062
Phone: (423) 439-6283
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $101.
Total Amount is formed as General ($101) + Research ($0) + Ownership ($0) = $101.
Last reported payment date: 2024-08-02 • Largest payer in this snapshot: Sumitomo Pharma America, Inc. ($82).
Total Amount
$101
General + Research + Ownership
Payments
2
Total payment records
General Amount
$101
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-02
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Sumitomo Pharma America, Inc. | $82 |
| COLOPLAST CORP | $20 |
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: 2022-03-04
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 |
|---|---|---|---|---|
| I20150304002320 | I | Emergency Medicine | TN | TBD |
| I20220304001553 | I | General Practice | VA | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 1,640 | 325 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 171 | 164 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 166 | 158 | $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 37604)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | VA | |
| Family Practice | TN | |
| Family Practice, Emergency Medicine | TN | |
| Emergency Medicine | TX | |
| Emergency Medicine | TN | |
| - | TN | |
| Emergency Medicine | TN | |
| Internal Medicine | TN | |
| - | TN | |
| - | TN |
Reviews
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