DoctorsProofNPPES directory · verify at state boards

Nephrology in Norman, OK

3 verified nephrology doctors in Norman.

Nephrologists treat kidney disease, high blood pressure, and disorders of fluid and electrolyte balance.

NPPES tenure ≠ clinical experience. "Years on NPPES" is time since the physician first registered a National Provider Identifier, not time practicing medicine. Verify current license status with the state medical board.

Verify a license at the Oklahoma State Board of Medical Licensure

Dr. Oswald Llanderosos, MD

Nephrology

21 yrs NPPES
NPI 1679554737
1553 N PORTER AVE, Norman, OK 73071(405) 217-8500
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. David Williams, MD

Nephrology

20 yrs NPPES
NPI 1518991264
1553 N PORTER AVE, Norman, OK 73071(405) 217-8500
NPPES public registryAccepts Medicare (2024)
CMS Open Payments· $4,416 (2023)

Industry Payments (2023)

Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.

$4,416

Total received

26

Transactions

7

Paying companies

Top paying companies

Otsuka America Pharmaceutical, Inc.$3,831
AstraZeneca Pharmaceuticals LP$205.94
Bayer HealthCare Pharmaceuticals Inc.$191.35
Otsuka Pharmaceutical Development & Commercialization, Inc.$82.32
Baxter Healthcare$43.78
Horizon Therapeutics plc$42.64

Among the 10,935 nephrology doctors we've analyzed, about 59% received any industry payment (median $286 among those who did). This doctor's total is higher than 93% of that group — among the highest recipients.

Benchmark reflects doctors we've analyzed, not all US nephrology doctors.

Payments to David Williams do not imply any wrongdoing. Many are meals, education, or research support.

Dr. Cuong Nguyen, MD

Nephrology

19 yrs NPPES
NPI 1659497451
1553 N PORTER AVE, Norman, OK 73071(405) 217-8500
NPPES public registryAccepts Medicare (2024)
CMS Open Payments· $374.77 (2023)

Industry Payments (2023)

Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.

$374.77

Total received

13

Transactions

6

Paying companies

Top paying companies

Outset Medical Inc$117.26
Travere Therapeutics, Inc.$61.22
Horizon Therapeutics plc$57.63
Bayer HealthCare Pharmaceuticals Inc.$54.24
Otsuka America Pharmaceutical, Inc.$51.00
AstraZeneca Pharmaceuticals LP$33.42

Among the 10,935 nephrology doctors we've analyzed, about 59% received any industry payment (median $286 among those who did). This doctor's total ranks around the 74th percentile of that group.

Benchmark reflects doctors we've analyzed, not all US nephrology doctors.

Payments to Cuong Nguyen do not imply any wrongdoing. Many are meals, education, or research support.

Nephrology in Norman, OK — Verified | DoctorsProof | DoctorsProof