Tessa Marcelle Buchan Antalan, MD
NPI 1427346758ActiveIndividual· Internal Medicine, Geriatric Medicine· San Diego, CA
Internal Medicine, Geriatric Medicine (MD) with Regents of the University of California, practicing in San Diego, California. Their prescriptions cost Medicare Part D more than their services did: $511,569 for 5,191 claims, against $143,048 paid for services in 2024. Lists Uc San Diego Health Hillcrest - Hillcrest Med Ctr as a hospital affiliation.
Overview
| NPI | 1427346758 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 20, 2011 |
| Last updated in NPPES | Apr 19, 2021 |
| Certified by provider | Apr 19, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | A130238 | CA |
| Internal Medicine | 207R00000X | A130238 | 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 - Geriatric Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 385 |
|---|---|
| Services billed | 1,898 across 29 procedure codes |
| Paid by Medicare | $143,048 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,191 · 11,243 30-day fills |
|---|---|
| Patients | 427 |
| Total drug cost | $511,569 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Geriatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of CaliforniaSan Diego, CA · 2,089 clinicians
Hospital affiliation
- Uc San Diego Health Hillcrest - Hillcrest Med CtrSan Diego, CA
Other facilities
- Accentcare Home Health at Uc San Diego LLCHome health agency · San Diego, CA
- Accentcare Home Health of California, IncHome health agency · San Diego, CA
- Advantage Health SystemsHome health agency · San Diego, CA
- Meridian Home HealthHome health agency · San Diego, CA
- Mission Home Health of San Diego LLCHome health agency · San Diego, 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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