Has Cass Nakasone, MD received payments from drug or device companies?

Yes. Drug and device makers reported $956,541 in general payments to Cass Nakasone, MD across 363 transactions between 2019–2025. Most Open Payments records nationally are meals worth under $20; a reported payment is not evidence of wrongdoing.

Does a payment mean Cass Nakasone, MD did something wrong?

No. Federal law requires drug and device makers to report almost every transfer of value to a physician, including a $14 sandwich at a lunch presentation. Consulting fees, research funding and royalties to device inventors are ordinary, legal parts of medicine. This site reports what was disclosed; it makes no allegation.

Where does this information about Cass Nakasone, MD come from?

The U.S. Centers for Medicare & Medicaid Services. Payments come from Open Payments, published under the Physician Payments Sunshine Act. Billing and prescribing figures come from the Medicare Physician & Other Practitioners and Part D Prescriber public use files for 2024.

Cass Nakasone, MD

Orthopaedic Surgery · Honolulu, HINPI 1316011091

Payments from drug & device makers

What this record shows

This record is dominated by royalties or licence payments: $759,981 of the $956,541 with a category attached, or 79.5%. Ortho Development Corporation accounts for 92.8% of it on its own, with 15 other manufacturers making up the rest. Among orthopaedic surgery clinicians in HI with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.

$956,541in general payments, 2019–2025

Across 363 payments — averaging $2635.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Ortho Development Corporation$888K
Encore Medical, LP$32K
Orthalign Inc$20K
Zimmer Biomet$14K
Think Surgical, Inc.$1K
Smith+Nephew$333
plus $1K from 10 others

$54,627in research payments, 2019–2025

Across 30 payments — averaging $1820.88 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.

Zimmer Biomet$55K

What the payments were for

Royalty or licence$759,98179%
Consulting fees$122,88313%
Speaking & faculty fees$14,0001%
Travel & lodging$46,8775%
Food & beverage$11,4861%
Gifts$1,3140%

General payments by program year

Who reported the general payments

Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.

Company	Payments	Total
Ortho Development Corporation	268	$887,635
Encore Medical, LP	33	$32,047
Orthalign Inc	27	$20,235
Zimmer Biomet	14	$13,927
Think Surgical, Inc.	4	$1,029
Smith+Nephew	5	$333
Engage Uni, LLC	2	$310
Next Science LLC	1	$245
Heraeus Medical, LLC.	2	$227
Medacta USA, Inc.	1	$120
Maxx Orthopedics, Inc.	1	$100
Cumberland Pharmaceuticals, Inc.	1	$97
Kinamed, Inc.	1	$70
Johnson & Johnson	1	$60
Stryker	1	$56
Pacira Pharmaceuticals Incorporated	1	$50

What the payments were tied to

Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.

Ovation Tribute Hip Stem$276,877
Ovation Tribute$205,299
Balance Knee Revision System$120,621
Balanced Knee Revision System$93,422
BKS Uni$65,427
BKS TriMax$53,976
BKS Revision$52,562
DJO SURGICAL$35,464
Ovation Hip Stem$35,460
Escalade$24,185
ORTHALIGN PLUS$20,065
DJO Surgical EPIK Uni Knee$3,428
DJO Surgical Empowr Knee System$3,290
DJO Surgical 3DKnee System$1,738
Trivicta$1,294
Tsolution One Surgical System$1,018
DJO Surgical TaperFill Hip System$869
Entrada Hip Stem$707
Legend$673
DJO Surgical AltiVate Anatomic System$441

How this compares

$956,541 in reported general payments places this provider in the 95th percentile of 83 orthopaedic surgery providers in Hawaii.

See all orthopaedic surgery providers in Hawaii →

Medicare billing

Part B allowed, 2024

$283,074

Medicare patients

311

Services billed

510

What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.

Most prescribed under Part D

Drug	Claims	Cost to plans & patients
Amoxicillin	11	$8

Paid to pharmacies, not to this prescriber.

Other orthopaedic surgery in Honolulu

Darin AwayaHonolulu$445K
Christian KikuchiHonolulu$142K
Paul MortonHonolulu$83K
Gary OkamuraHonolulu$69K
Andrew RichardsonHonolulu$55K
Kyle MitsunagaHonolulu$52K
Kanu OkikeHonolulu$47K
Brian ManninoHonolulu$43K
Morris MitsunagaHonolulu$32K
Anthony BarciaHonolulu$27K

See the full list for Hawaii →

Where these figures come from

Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
Identity: NPPES NPI Registry, July 2026.

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