Adrian Omar Chen, MD
NPI 1790952869ActiveIndividual· Internal Medicine· Richmond, MO
Internal Medicine (MD) in Richmond, Missouri, trained at Meharry Medical College School of Medicine (class of 2008). Their prescriptions cost Medicare Part D more than their services did: $367,235 for 4,321 claims, against $3,314 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 22 companies reporting payments in 2025, $1,529 in all, mostly food and beverage.
Overview
| NPI | 1790952869 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 8, 2008 |
| Last updated in NPPES | Jul 24, 2024 |
| Certified by provider | Jul 24, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 2012004024 | MO |
| Pediatrics | 208000000X | 2012004024 | MO |
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 - Internal Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 68 |
|---|---|
| Services billed | 152 across 9 procedure codes |
| Paid by Medicare | $3,314 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,321 · 7,540 30-day fills |
|---|---|
| Patients | 437 |
| Total drug cost | $367,235 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Meharry Medical College School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
Medical group
- Meritas Health CorporationKansas City, MO · 502 clinicians
Hospital affiliation
- Ray County Memorial HospitalRichmond, MO
Other facilities
- Phoenix Home CareHome health agency · Independence, MO
- Specialized Home CareHome health agency · Independence, MO
Industry payments (Open Payments)
- 2025$1,529 · 93 payments from 22 companies
- 2024$1,427 · 91 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $226.27 | 17 |
| Lilly USA, LLC | $167.13 | 9 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $164.30 | 12 |
| Abbott Laboratories | $148.70 | 7 |
| Abbvie Inc. | $136.97 | 14 |
What the 2025 payments were for
- Food and Beverage$1,529 · 93 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records