Bob Geng, M.D.
NPI 1356570758ActiveIndividual· Allergy & Immunology· San Diego, CA
Allergy & Immunology (M.D.) in San Diego, California, trained at Washington University School of Medicine (class of 2009). Their prescriptions cost Medicare Part D more than their services did: $100,800 for 69 claims, against $3,020 paid for services in 2024. Genzyme Corporation was the largest of 41 companies reporting payments in 2025, $760,491 in all, mostly speaking and faculty fees.
Overview
| NPI | 1356570758 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 7, 2009 |
| Last updated in NPPES | Feb 6, 2024 |
| Certified by provider | Feb 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | A121364 | CA |
| Internal Medicine | 207R00000X | A121364 | 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 | 15 |
|---|---|
| Services billed | 299 across 10 procedure codes |
| Paid by Medicare | $3,020 |
Part D prescriptions in 2024
| Prescriptions (claims) | 69 · 99 30-day fills |
|---|---|
| Patients | 14 |
| Total drug cost | $100,800 |
| Generic share | 33% of claims |
Education and affiliations
| Medical school | Washington University School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Hospitalist, Internal Medicine |
Medical group
- Rady Children's Hospital San DiegoSan Diego, CA · 169 clinicians
Industry payments (Open Payments)
- 2025$760,491 · 690 payments from 41 companies
- 2024$565,906 · 561 payments from 32 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $143,574 | 93 |
| Glaxosmithkline, LLC. | $134,049 | 95 |
| Regeneron Healthcare Solutions, Inc. | $92,046 | 89 |
| Lilly USA, LLC | $77,652 | 72 |
| Incyte Corporation | $50,401 | 49 |
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$482,351 · 146 payments
- Travel and Lodging$129,390 · 219 payments
- Consulting Fee$121,256 · 35 payments
- Food and Beverage$19,457 · 286 payments
- Honoraria$8,000 · 2 payments
- Education$36.69 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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