Stephen Lloyd Catalya, MD
NPI 1881100832ActiveIndividual· Internal Medicine, Infectious Disease· Pleasant Hill, CA
Internal Medicine, Infectious Disease (MD) with Epic Care, practicing in Pleasant Hill, California. Mostly services rather than prescriptions: Medicare paid $176,988 for 298 patients in 2024, with only 22 Part D claims. Lists John Muir Medical Center - Concord Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1881100832 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 28, 2017 |
| Last updated in NPPES | Nov 13, 2025 |
| Certified by provider | Nov 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A153090 | 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 - Infectious Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 298 |
|---|---|
| Services billed | 1,593 across 7 procedure codes |
| Paid by Medicare | $176,988 |
Part D prescriptions in 2024
| Prescriptions (claims) | 22 · 24 30-day fills |
|---|---|
| Total drug cost | $2,265 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Epic CareWalnut Creek, CA · 55 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Infectious Disease providers in Pleasant Hill
- 1164752242
- 1225230485
All Internal Medicine, Infectious Disease providers in California →