Karl Friedrich Vontiehl, M.D.
NPI 1013165869ActiveIndividual· Allergy & Immunology· San Marino, CA
Allergy & Immunology (M.D.) in San Marino, California, trained at Medical College of Ohio (class of 2004). In 2024 Medicare paid $68,582 for 109 patients, and Part D covered 198 of their prescriptions, 61% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 11 companies reporting payments in 2025, $1,209 in all, mostly food and beverage.
Overview
| NPI | 1013165869 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 5, 2008 |
| Last updated in NPPES | Jul 12, 2023 |
| Certified by provider | Jul 12, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | A95085 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Allergy/Immunology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 109 |
|---|---|
| Services billed | 8,408 across 18 procedure codes |
| Paid by Medicare | $68,582 |
Part D prescriptions in 2024
| Prescriptions (claims) | 198 · 385 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $98,588 |
| Generic share | 61% of claims |
Education and affiliations
| Medical school | Medical College of Ohio |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Allergy/Immunology |
Industry payments (Open Payments)
- 2025$1,209 · 53 payments from 11 companies
- 2024$819.01 · 36 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $364.32 | 19 |
| Glaxosmithkline, LLC. | $200.10 | 7 |
| Novartis Pharmaceuticals Corporation | $179.78 | 7 |
| Regeneron Healthcare Solutions, Inc. | $172.65 | 9 |
| Genzyme Corporation | $79.77 | 2 |
What the 2025 payments were for
- Food and Beverage$1,209 · 53 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records