Stephen Ac Parnell, M.D.
NPI 1609968320ActiveIndividual· Internal Medicine, Gastroenterology· Inglewood, CA
Internal Medicine, Gastroenterology (M.D.) in Inglewood, California, trained at Howard University College of Medicine (class of 1974). Their prescriptions cost Medicare Part D more than their services did: $769,048 for 1,402 claims, against $171,442 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 9 companies reporting payments in 2025, $3,614 in all, mostly food and beverage.
Overview
| NPI | 1609968320 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 29, 2006 |
| Last updated in NPPES | Dec 29, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | G45223 | CA |
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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 672 |
|---|---|
| Services billed | 1,836 across 19 procedure codes |
| Paid by Medicare | $171,442 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,402 · 2,031 30-day fills |
|---|---|
| Patients | 594 |
| Total drug cost | $769,048 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | Howard University College of Medicine |
|---|---|
| Graduation year | 1974 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Coast Gastroenterology A Medical Group Inc.Inglewood, CA · 3 clinicians
Hospital affiliation
- Centinela Hospital Medical CenterInglewood, CA
Industry payments (Open Payments)
- 2025$3,614 · 74 payments from 9 companies
- 2024$1,985 · 88 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $1,925 | 5 |
| Abbvie Inc. | $674.06 | 25 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $370.61 | 15 |
| Pfizer Inc. | $335.32 | 16 |
| Janssen Biotech, Inc. | $167.23 | 8 |
What the 2025 payments were for
- Food and Beverage$1,947 · 73 payments
- Grant$1,667 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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