Sean Paul Spencer, MD, PHD
NPI 1235518176ActiveIndividual· Internal Medicine, Gastroenterology· Stanford, CA
Internal Medicine, Gastroenterology (MD, PHD) with Stanford Health Care, practicing in Stanford, California. Their prescriptions cost Medicare Part D more than their services did: $95,339 for 243 claims, against $28,839 paid for services in 2024. Ardelyx, Inc. was the largest of 2 companies reporting payments in 2025, $90.87 in all, mostly food and beverage. Lists Stanford Health Care as a hospital affiliation.
Overview
| NPI | 1235518176 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | May 26, 2015 |
| Last updated in NPPES | Apr 17, 2024 |
| Certified by provider | Apr 17, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A149694 | CA |
| Internal Medicine | 207R00000X | L-263354 | MA |
| Internal Medicine | 207R00000X | A149694 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 135 |
|---|---|
| Services billed | 266 across 25 procedure codes |
| Paid by Medicare | $28,839 |
Part D prescriptions in 2024
| Prescriptions (claims) | 243 · 346 30-day fills |
|---|---|
| Patients | 98 |
| Total drug cost | $95,339 |
| Generic share | 60% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$90.87 · 3 payments from 2 companies
- 2024$4,907 · 12 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $47.53 | 1 |
| Mauna Kea Technologies, Inc. | $43.34 | 2 |
What the 2025 payments were for
- Food and Beverage$90.87 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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