Leslie Harper Massey, D.O.
NPI 1699186585ActiveIndividual· Internal Medicine, Gastroenterology· Carson City, NV
Internal Medicine, Gastroenterology (D.O.) in Carson City, Nevada, trained at Edward Via Col of Osteo Medicine-Virginia Campus (class of 2014). Their prescriptions cost Medicare Part D more than their services did: $389,840 for 1,062 claims, against $155,871 paid for services in 2024. Abbvie Inc. was the largest of 16 companies reporting payments in 2025, $2,017 in all, mostly food and beverage.
Overview
| NPI | 1699186585 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | May 13, 2014 |
| Last updated in NPPES | Oct 30, 2020 |
| Certified by provider | Oct 30, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | DO2240 | 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 | 749 |
|---|---|
| Services billed | 1,356 across 35 procedure codes |
| Paid by Medicare | $155,871 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,062 · 2,055 30-day fills |
|---|---|
| Patients | 389 |
| Total drug cost | $389,840 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Edward Via Col of Osteo Medicine-Virginia Campus |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Collins Carson City Gastroenterology, LtdCarson City, NV · 12 clinicians
Hospital affiliations
- Barton Memorial HospitalSouth Lake Tahoe, CA
- Carson Tahoe Regional Medical CenterCarson City, NV
- Carson Valley HealthGardnerville, NV
- Renown Regional Medical CenterReno, NV
Industry payments (Open Payments)
- 2025$2,017 · 89 payments from 16 companies
- 2024$1,422 · 60 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $617.49 | 33 |
| Biocon Biologics Inc | $185.34 | 2 |
| Janssen Biotech, Inc. | $183.98 | 6 |
| Ipsen Biopharmaceuticals, Inc | $166.63 | 6 |
| Pfizer Inc. | $140.74 | 9 |
What the 2025 payments were for
- Food and Beverage$1,918 · 88 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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