Christopher R. Collaco, M.D.
NPI 1982622510ActiveIndividual· Allergy & Immunology· Houston, TX
Allergy & Immunology (M.D.) in Houston, Texas, trained at University of Texas Medical Branch at Galveston (class of 1999). In 2024 Medicare paid $123,837 for 120 patients, and Part D covered 516 of their prescriptions, 72% of them generic. Ars Pharmaceuticals Operations, Inc. was the largest of 15 companies reporting payments in 2025, $10,003 in all, mostly speaking and faculty fees.
Overview
| NPI | 1982622510 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 18, 2006 |
| Last updated in NPPES | Jan 26, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | L3266 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Allergy/Immunology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 120 |
|---|---|
| Services billed | 6,337 across 18 procedure codes |
| Paid by Medicare | $123,837 |
Part D prescriptions in 2024
| Prescriptions (claims) | 516 · 727 30-day fills |
|---|---|
| Patients | 139 |
| Total drug cost | $64,832 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | University of Texas Medical Branch at Galveston |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Allergy/Immunology |
Industry payments (Open Payments)
- 2025$10,003 · 44 payments from 15 companies
- 2024$1,917 · 20 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ars Pharmaceuticals Operations, Inc. | $7,864 | 10 |
| Galderma Laboratories, L.P. | $401.96 | 6 |
| Genzyme Corporation | $260.42 | 3 |
| Organon LLC | $244.63 | 3 |
| Astrazeneca Pharmaceuticals LP | $231.22 | 3 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$7,200 · 4 payments
- Food and Beverage$2,803 · 40 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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