Tonya Kaltenbach, MD
NPI 1578618419ActiveIndividual· Specialist· Palo Alto, CA
Specialist (MD) in Palo Alto, California, trained at Jefferson Medical College of Thomas Jefferson University (class of 2001). Medicare paid $16,238 for services to 57 patients in 2024. Olympus Corporation was the largest of 5 companies reporting payments in 2025, $121,172 in all, mostly consulting fees.
Overview
| NPI | 1578618419 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 23, 2007 |
| Last updated in NPPES | Dec 31, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | A81539 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 57 |
|---|---|
| Services billed | 99 across 16 procedure codes |
| Paid by Medicare | $16,238 |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Gastroenterology |
Medical group
- Regents of the University of CaliforniaSan Francisco, CA · 732 clinicians
Hospital affiliation
- UCSF Medical CenterSan Francisco, CA
Industry payments (Open Payments)
- 2025$121,172 · 99 payments from 5 companies
- 2024$73,188 · 59 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Olympus Corporation | $78,966 | 50 |
| Boston Scientific Corporation | $29,730 | 33 |
| Olympus America Inc. | $9,531 | 2 |
| Olympus Medical Systems Corporation | $1,601 | 6 |
| Olympus Corporation of the Americas | $1,345 | 8 |
What the 2025 payments were for
- Consulting Fee$90,194 · 38 payments
- Travel and Lodging$14,803 · 30 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$14,500 · 5 payments
- Food and Beverage$1,676 · 26 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 45 Specialist providers in Palo Alto · All Specialist providers in California