Margaret M. Guo, MD
NPI 1760566764ActiveIndividual· Hospitalist· Santa Rosa, CA
Hospitalist (MD) in Santa Rosa, California, trained at State University of New York at Stony Brook, School of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $9,283 for 147 claims, against $2,230 paid for services in 2024.
Overview
| NPI | 1760566764 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 25, 2006 |
| Last updated in NPPES | Dec 8, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A76449 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 12 |
|---|---|
| Services billed | 35 across 2 procedure codes |
| Paid by Medicare | $2,230 |
Part D prescriptions in 2024
| Prescriptions (claims) | 147 · 320 30-day fills |
|---|---|
| Patients | 65 |
| Total drug cost | $9,283 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pain Management |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - SacramentoSacramento, 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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