Steven Barry Machtinger, MD
NPI 1093719437ActiveIndividual· Pediatrics, Pediatric Allergy/Immunology· San Francisco, CA
Pediatrics, Pediatric Allergy/Immunology (MD) in San Francisco, California, trained at University of Pittsburgh School of Medicine (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $357,569 for 404 claims, against $168,444 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 9 companies reporting payments in 2025, $535.45 in all, mostly food and beverage.
Overview
| NPI | 1093719437 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 13, 2005 |
| Last updated in NPPES | Dec 12, 2025 |
| Certified by provider | Dec 12, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pediatrics, Pediatric Allergy/Immunology Primary | 2080P0201X | G42041 | CA |
| Pediatrics | 208000000X | G42041 | CA |
| Allergy & Immunology | 207K00000X | G42041 | 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 - Allergy/Immunology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 118 |
|---|---|
| Services billed | 6,737 across 22 procedure codes |
| Paid by Medicare | $168,444 |
Part D prescriptions in 2024
| Prescriptions (claims) | 404 · 646 30-day fills |
|---|---|
| Patients | 97 |
| Total drug cost | $357,569 |
| Generic share | 44% of claims |
Education and affiliations
| Medical school | University of Pittsburgh School of Medicine |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Allergy/Immunology |
Medical groups
- Regents of the University of California - UCSFSan Francisco, CA · 80 clinicians
- Steven Machtinger MD and Associates IncSan Mateo, CA · 2 clinicians
Hospital affiliations
- Peninsula Medical CenterBurlingame, CA
- Sequoia HospitalRedwood City, CA
Industry payments (Open Payments)
- 2025$535.45 · 19 payments from 9 companies
- 2024$529.15 · 8 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $189.09 | 8 |
| Genzyme Corporation | $62.71 | 2 |
| Ars Pharmaceuticals Operations, Inc. | $55.49 | 2 |
| Sanofi-Aventis U.S. LLC | $54.95 | 1 |
| Novartis Pharmaceuticals Corporation | $50.59 | 2 |
What the 2025 payments were for
- Food and Beverage$480.50 · 18 payments
- Education$54.95 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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