Christian Diaz Stone, MD, MPH
NPI 1750308284ActiveIndividual· Internal Medicine, Gastroenterology· Las Vegas, NV
Internal Medicine, Gastroenterology (MD, MPH) in Las Vegas, Nevada, trained at University of California, Irvine, California College of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $1,281,082 for 1,091 claims, against $103,706 paid for services in 2024. Abbvie Inc. was the largest of 12 companies reporting payments in 2025, $167,466 in all, mostly speaking and faculty fees.
Overview
| NPI | 1750308284 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MPH |
| Sole proprietor | No |
| NPI issued | Jul 17, 2006 |
| Last updated in NPPES | Sep 22, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 13318 | NV |
| Internal Medicine | 207R00000X | 13318 | NV |
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 - Gastroenterology (NV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 470 |
|---|---|
| Services billed | 1,330 across 49 procedure codes |
| Paid by Medicare | $103,706 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,091 · 1,514 30-day fills |
|---|---|
| Patients | 360 |
| Total drug cost | $1,281,082 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Kim Chen PLLCLas Vegas, NV · 18 clinicians
Hospital affiliations
- Mountainview HospitalLas Vegas, NV
- Southern Hills Hospital and Medical CenterLas Vegas, NV
Industry payments (Open Payments)
- 2025$167,466 · 212 payments from 12 companies
- 2024$235,578 · 288 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $67,972 | 92 |
| Takeda Pharmaceuticals U.S.A., Inc. | $36,821 | 27 |
| Lilly USA, LLC | $36,647 | 38 |
| Janssen Biotech, Inc. | $17,751 | 21 |
| Pfizer Inc. | $4,600 | 15 |
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$145,790 · 50 payments
- Travel and Lodging$12,914 · 48 payments
- Food and Beverage$5,569 · 112 payments
- Consulting Fee$3,193 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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