LUIS A ARMSTRONG (M.D.) – Gastroenterology Physician, NPI 1952411670
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,498 GASTROENTEROLOGY in TX
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Provider Addresses for LUIS A ARMSTRONG (M.D.)
Elizabeth Street, Corpus Christi, Nueces County, Texas, 78404, United States
SUITE 509
CORPUS CHRISTI, TX 784042220
Phone: (361) 882-3010
Fax: (361) 882-3011
Type: Mailing
PO BOX 51670
CASPER, WY 826051670
Phone: (307) 333-0002
Fax: (307) 202-5112
Type: Mailing
1026 E 2ND ST
CASPER, WY 826012902
Phone: (073) 333-0002
Fax: (307) 202-5112
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 32 Open Payments records for all available years, with a total value of $751.
Total Amount is formed as General ($751) + Research ($0) + Ownership ($0) = $751.
Last reported payment date: 2024-12-11 • Largest payer in this snapshot: ABBVIE INC. ($226).
Total Amount
$751
General + Research + Ownership
Payments
32
Total payment records
General Amount
$751
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-11
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $226 |
| Janssen Biotech, Inc. | $156 |
| NESTLE HEALTHCARE NUTRITION INC. | $116 |
| RedHill Biopharma Inc. | $56 |
| AIMMUNE THERAPEUTICS, INC. | $48 |
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: 2024-07-03
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 |
|---|---|---|---|---|
| I20070126000642 | I | Gastroenterology | TX | TBD |
| I20240703004030 | I | Gastroenterology | WY | 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 | 64 | 56 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 50 | 50 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 48 | 48 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 48 | 47 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 41 | 39 | $0 |
Insurance plans in this area (ZIP 78404)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | TX | 45378 | Diagnostic examination of large bowel using an endoscope | 19 | 19 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | TX | |
| Physician Assistant | WY | |
| Physician Assistant | NE | |
| Gastroenterology, Infectious Disease, Internal Medicine | WY | |
| Nurse Practitioner | WY | |
| P A T H O L O G Y | WI |
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