Naval Gustad Daver, MBBS
NPI 1740422823ActiveIndividual· Internal Medicine, Hematology & Oncology· Houston, TX
Internal Medicine, Hematology & Oncology (MBBS) with Physicians Referral Service, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $837,295 for 266 claims, against $59,203 paid for services in 2024. Abbvie Inc. was the largest of 20 companies reporting payments in 2025, $85,169 in all, mostly consulting fees.
Overview
| NPI | 1740422823 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MBBS |
| Sole proprietor | No |
| NPI issued | Apr 3, 2009 |
| Last updated in NPPES | Jul 10, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | P0031 | TX |
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 - Hematology/Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 166 |
|---|---|
| Services billed | 593 across 13 procedure codes |
| Paid by Medicare | $59,203 |
Part D prescriptions in 2024
| Prescriptions (claims) | 266 · 301 30-day fills |
|---|---|
| Patients | 74 |
| Total drug cost | $837,295 |
| Generic share | 65% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Physicians Referral ServiceHouston, TX · 2,765 clinicians
Industry payments (Open Payments)
- 2025$85,169 · 81 payments from 20 companies
- 2024$140,016 · 109 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $20,963 | 14 |
| Daiichi Sankyo Inc. | $15,886 | 20 |
| Hikma Pharmaceuticals USA | $13,420 | 12 |
| Sumitomo Pharma America, Inc. | $9,532 | 3 |
| Stemline Therapeutics Inc. | $6,244 | 3 |
What the 2025 payments were for
- Consulting Fee$65,251 · 21 payments
- Travel and Lodging$11,763 · 17 payments
- Honoraria$4,500 · 1 payment
- Food and Beverage$2,489 · 39 payments
- Compensation for serving as faculty or as a speaker for a medical education program$1,166 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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