Jeffrey J. Hallazgo, M.D.
NPI 1073538302ActiveIndividual· Internal Medicine· Fenton, MO
Internal Medicine (M.D.) in Fenton, Missouri, trained at University of Missouri, Kansas City, School of Medicine (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $408,011 for 7,181 claims, against $43,942 paid for services in 2024. Abbvie Inc. was the largest of 7 companies reporting payments in 2025, $295.15 in all, mostly food and beverage.
Overview
| NPI | 1073538302 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 13, 2006 |
| Last updated in NPPES | May 10, 2021 |
| Certified by provider | May 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | R4G27 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Emergency Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 160 |
|---|---|
| Services billed | 571 across 28 procedure codes |
| Paid by Medicare | $43,942 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,181 · 16,619 30-day fills |
|---|---|
| Patients | 583 |
| Total drug cost | $408,011 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Missouri, Kansas City, School of Medicine |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Emergency Medicine |
| Telehealth | Offers telehealth |
Medical group
- Mercy Clinic East CommunitiesSaint Louis, MO · 571 clinicians
Hospital affiliations
- Mercy Hospital SouthSaint Louis, MO
- Mercy Hospital St LouisSaint Louis, MO
Industry payments (Open Payments)
- 2025$295.15 · 15 payments from 7 companies
- 2024$336.29 · 20 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $80.08 | 3 |
| Exact Sciences Corporation | $49.89 | 3 |
| Amgen Inc. | $43.01 | 2 |
| Astrazeneca Pharmaceuticals LP | $36.82 | 2 |
| Lilly USA, LLC | $35.48 | 2 |
What the 2025 payments were for
- Food and Beverage$295.15 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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