Mychall Raymond Columna Pagulayan-Sy, MD
NPI 1063075695ActiveIndividual· Internal Medicine· Davis, CA
Internal Medicine (MD) with Regents of the University of California, practicing in Davis, California. Their prescriptions cost Medicare Part D more than their services did: $347,315 for 3,371 claims, against $23,104 paid for services in 2024. Lists University of California Davis Medical Center as a hospital affiliation.
Overview
| NPI | 1063075695 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 18, 2019 |
| Last updated in NPPES | Oct 29, 2024 |
| Certified by provider | Oct 22, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A195817 | CA |
| Internal Medicine | 207R00000X | PG193628 | OR |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 235 |
|---|---|
| Services billed | 359 across 27 procedure codes |
| Paid by Medicare | $23,104 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,371 · 7,077 30-day fills |
|---|---|
| Patients | 340 |
| Total drug cost | $347,315 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of CaliforniaSacramento, CA · 567 clinicians
Hospital affiliation
- University of California Davis Medical CenterSacramento, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 34 internal medicine physicians in Davis · All internal medicine physicians in California