MARGARET EILEEN COOK (MD) – Nephrology Physician, NPI 1932174299
Nephrology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
1,168 NEPHROLOGY in TX
Provider Addresses for MARGARET EILEEN COOK (MD)
12221 N MOPAC EXPY
AUSTIN, TX 787582401
Phone: (512) 901-4010
Fax: (512) 901-3910
Type: Location
Mopac Expressway, Austin, Travis County, Texas, 78739, United States
AUSTIN, TX 787582483
Phone: (512) 901-4010
Fax: (512) 901-3910
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 91 Open Payments records for all available years, with a total value of $1,868.
Total Amount is formed as General ($1,868) + Research ($0) + Ownership ($0) = $1,868.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: Bayer Healthcare Pharmaceuticals Inc. ($479).
Total Amount
$1,868
General + Research + Ownership
Payments
91
Total payment records
General Amount
$1,868
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: 2010-03-18
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 |
|---|---|---|---|---|
| I20100318000467 | 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 |
|---|---|---|---|---|
| J0885 | Injection, epoetin alfa, (for non-esrd use), 1000 units | 1,021 | 13 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 249 | 114 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 195 | 95 | $0 |
| 80069 | Kidney function blood test panel | 184 | 97 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 181 | 120 | $0 |
Insurance plans in this area (ZIP 78758)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEPHROLOGY | TX | 90966 | Home dialysis services per month, patient 20 years of age or older | 208 | 26 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TX | |
| - | TX | |
| - | TX | |
| - | TX | |
| Nurse Practitioner | TX | |
| - | TX | |
| - | TX | |
| Nurse Practitioner | TX | |
| Family Practice | TX | |
| - | TX |
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