DR. WILLIAM LEE SHAFFER (M.D.) – Nephrology Physician, NPI 1972506913
Nephrology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
1,168 NEPHROLOGY in TX
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Provider Addresses for DR. WILLIAM LEE SHAFFER (M.D.)
South Staples Street, Bay Area, Corpus Christi, Nueces County, Texas, 78412, United States of America
STE 601
CORPUS CHRISTI, TX 784043154
Phone: (361) 887-8451
Fax: (361) 887-6126
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 29 Open Payments records for all available years, with a total value of $544.
Total Amount is formed as General ($544) + Research ($0) + Ownership ($0) = $544.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: Bayer Healthcare Pharmaceuticals Inc. ($246).
Total Amount
$544
General + Research + Ownership
Payments
29
Total payment records
General Amount
$544
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2007-04-13
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 |
|---|---|---|---|---|
| I20070413000501 | I | Nephrology | TX | 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 |
|---|---|---|---|---|
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 299 | 137 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 193 | 105 | $0 |
| 82570 | Creatinine level to test for kidney function or muscle injury | 146 | 84 | $0 |
| 81001 | Manual urinalysis test with examination using microscope, automated | 143 | 86 | $0 |
| 90961 | Dialysis services, 2-3 physician visits per month (20 years or older) | 84 | 66 | $0 |
Insurance plans in this area (ZIP 78404)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | TX | |
| N E P H R O L O G Y | TX | |
| Nurse Practitioner | TX | |
| N E P H R O L O G Y | TX | |
| Nephrology, Hospitalist, Internal Medicine | PA | |
| N E P H R O L O G Y | TX | |
| N E P H R O L O G Y | TX |
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