Mark S. Reginato, M.D.
NPI 1194884502ActiveIndividual· Internal Medicine· Danville, CA
Internal Medicine (M.D.) in Danville, California, trained at Georgetown University School of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $956,168 for 6,719 claims, against $447,207 paid for services in 2024. Abbvie Inc. was the largest of 49 companies reporting payments in 2025, $3,389 in all, mostly food and beverage.
Overview
| NPI | 1194884502 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 8, 2006 |
| Last updated in NPPES | Feb 27, 2025 |
| Certified by provider | Feb 27, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A78956 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,614 |
|---|---|
| Services billed | 12,653 across 77 procedure codes |
| Paid by Medicare | $447,207 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,719 · 13,428 30-day fills |
|---|---|
| Patients | 1,246 |
| Total drug cost | $956,168 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Bass Medical GroupChico, CA · 291 clinicians
Hospital affiliations
- Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CA
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- San Ramon Regional Medical CenterSan Ramon, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Other facilities
- Accentcare Home Health of California, IncHome health agency · San Ramon, CA
- Blc Homehealth IncHome health agency · San Leandro, CA
- John Muir Home Health ServicesHome health agency · Concord, CA
- One Health Home Care, IncHome health agency · Livermore, CA
- Prohealth Home Care, IncHome health agency · San Jose, CA
Industry payments (Open Payments)
- 2025$3,389 · 161 payments from 49 companies
- 2024$3,319 · 178 payments from 39 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $348.43 | 24 |
| Pfizer Inc. | $217.45 | 10 |
| Amgen Inc. | $167.90 | 9 |
| Novo Nordisk Inc | $154.57 | 6 |
| Astrazeneca Pharmaceuticals LP | $150.62 | 7 |
What the 2025 payments were for
- Food and Beverage$3,389 · 161 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 32 internal medicine physicians in Danville · All internal medicine physicians in California