MARCEL B TWAHIRWA (MD) – Endocrinology, Diabetes & Metabolism Physician, NPI 1841381167
Endocrinology, Diabetes & Metabolism Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
660 ENDOCRINOLOGY in TX
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Provider Addresses for MARCEL B TWAHIRWA (MD)
Michaelangelo Drive, Borderland Retreat Colonia, Edinburg, Hidalgo County, Texas, 78504, United States
EDINBURG, TX 785391417
Phone: (956) 362-5650
Fax: (956) 362-2574
Type: Location
McAllen Post Office, Chicago Avenue, Bryan's Addition Colonia, McAllen, Hidalgo County, Texas, 78501, United States
MCALLEN, TX 785022646
Phone: (956) 362-2171
Fax: (956) 362-2574
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 9 Open Payments records for all available years, with a total value of $274.
Total Amount is formed as General ($274) + Research ($0) + Ownership ($0) = $274.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: Dexcom, Inc. ($98).
Total Amount
$274
General + Research + Ownership
Payments
9
Total payment records
General Amount
$274
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Dexcom, Inc. | $98 |
| Novo Nordisk Inc | $88 |
| Mannkind Corporation | $59 |
| Tandem Diabetes Care, Inc. | $29 |
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: 2004-06-11
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 |
|---|---|---|---|---|
| I20040611001058 | I | Endocrinology | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 577 | 233 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 187 | 121 | $0 |
| 95251 | Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 26 | 22 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 23 | 23 | $0 |
Insurance plans in this area (ZIP 78539)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | TX | |
| - | TX | |
| Nurse Practitioner | TX | |
| E N D O C R I N O L O G Y | TX | |
| E N D O C R I N O L O G Y | TX | |
| Nurse Practitioner | TX | |
| - | TX | |
| Nurse Practitioner | TX | |
| Endocrinology, Internal Medicine | TX | |
| Endocrinology, Internal Medicine | TX |
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