Michael Natter, MD
NPI 1558896035ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· San Francisco, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in San Francisco, California, licensed in CA and NY, with an NPI issued in April 2017. Their prescriptions cost Medicare Part D more than their services did: $970,467 for 1,829 claims, against $82,479 paid for services in 2024. Sanofi-Aventis U.S. LLC was the largest of 3 companies reporting payments in 2025, $30,788 in all, mostly speaking and faculty fees. Lists NYU Langone Hospitals as a hospital affiliation.
Overview
| NPI | 1558896035 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 21, 2017 |
| Last updated in NPPES | Feb 23, 2026 |
| Certified by provider | Feb 23, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A205547 | CA |
| Internal Medicine, Endocrinology, Diabetes & Metabolism | 207RE0101X | 302904 | NY |
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 - Endocrinology (CA); Practitioner - Endocrinology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 240 |
|---|---|
| Services billed | 4,853 across 25 procedure codes |
| Paid by Medicare | $82,479 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,829 · 3,831 30-day fills |
|---|---|
| Patients | 296 |
| Total drug cost | $970,467 |
| Generic share | 35% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
Hospital affiliation
- NYU Langone HospitalsNew York, NY
Industry payments (Open Payments)
- 2025$30,788 · 13 payments from 3 companies
- 2024$2,339 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sanofi-Aventis U.S. LLC | $30,711 | 9 |
| Novo Nordisk Inc | $55.51 | 3 |
| Beta Bionics, Inc. | $21.32 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$18,624 · 2 payments
- Travel and Lodging$12,087 · 7 payments
- Food and Beverage$76.83 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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