ALA'A EDDIN HISHAM SA'EED TAYYEM (M.D.) – Medical Oncology Physician, NPI 1437400702
Medical Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,297 INTERNAL MEDICINE in TX
Provider Addresses for ALA'A EDDIN HISHAM SA'EED TAYYEM (M.D.)
600 ELIZABETH ST
CORPUS CHRISTI, TX 784042235
Phone: (361) 881-3000
Type: Mailing
1601 TRINITY ST STOP 804
AUSTIN, TX 787121866
Phone: (512) 324-7865
Type: Mailing
18000 STUDEBAKER RD STE 800
CERRITOS, CA 907032671
Phone: (562) 735-3226
Type: Mailing
5625 EIGER RD STE 115
AUSTIN, TX 787358978
Phone: (737) 279-5779
Fax: (737) 260-3084
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 143 Open Payments records for all available years, with a total value of $2,773.
Total Amount is formed as General ($2,773) + Research ($0) + Ownership ($0) = $2,773.
Last reported payment date: 2023-12-19 • Largest payer in this snapshot: Janssen Biotech, Inc. ($210).
Total Amount
$2,773
General + Research + Ownership
Payments
143
Total payment records
General Amount
$2,773
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Janssen Biotech, Inc. | $210 |
| E.R. Squibb & Sons, L.L.C. | $204 |
| Myriad Genetic Laboratories, Inc. | $140 |
| PFIZER INC. | $124 |
| AstraZeneca Pharmaceuticals LP | $108 |
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: 2015-02-09
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 |
|---|---|---|---|---|
| I20150209000772 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 96413 | Administration of chemotherapy into vein, 1 hour or less | 68 | 15 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 60 | 22 | $0 |
| 96367 | Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | 38 | 12 | $0 |
| 96375 | Injection of additional new drug or substance into vein | 27 | 13 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 26 | 20 | $0 |
Insurance plans in this area (ZIP 78404)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Cardiac Electrophysiology | MS | |
| - | TX | |
| Infectious Disease | MI | |
| Internal Medicine | TX | |
| - | TX | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TX | |
| - | TX | |
| D E R M A T O L O G Y | TX | |
| - | NY | |
| - | TX |
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