Medical Doctor Program year 2025 Reported 2019–2025 Source: CMS Open Payments, 2026 publication

Derek Amanatullah

Adult Reconstructive Orthopaedic Surgery Stanford, CA Medical Doctor

NPI 1134386576 CMS profile 187326

300 Pasteur Dr, Stanford, CA 94305

Open in the dashboard

General payments

$828,387

538 records reported · program years 2019–2025

Research payments

$18,883

Paid to them · 3 records reported · program years 2019–2025

Ownership & investment interest

$0

None reported

Research they led as principal investigator

$106,209 paid to institutions, not to them · program years 2019–2024

Through program year 2025, Derek Amanatullah of Stanford, CA is reported in the CMS Open Payments database as having received $828,387 across 538 general payments and $18,883 in research payments paid to them. Separately, studies naming them as principal investigator received $106,209 in research payments, paid to institutions rather than to them.

No combined total General, research and ownership are kept apart. Each is reported under its own rules, and ownership is not money that moved at all but the value of a stake held. A meal, a clinical trial grant and a shareholding do not add up to anything meaningful, so this site does not add them. The principal-investigator line is research money paid to institutions for studies they led — not to them — and is not added to anything either.

General payments for this record sit in the 94th percentile of Adult Reconstructive Orthopaedic Surgery profiles with reported payments. Percentile describes the distribution, not the conduct.

By program year

9 rows
Year Kind Relative to this record's peak year Amount Records
2025 General $174,368 132
2024 General $136,523 86
2023 General $116,111 55
2022 General $122,909 51
2021 General $74,844 38
2020 General $109,911 61
2020 Research $2,233 1
2019 General $93,721 115
2019 Research $16,650 2

Beside peers

Year by year, beside peers General payments · among profiles paid that year
  • Derek Amanatullah
  • Adult Reconstructive Orthopaedic Surgery median
  • Middle half of Adult Reconstructive Orthopaedic Surgery
  • National median

In program year 2025, general payments to Derek Amanatullah were reported at $174,368. Among 1,079 Adult Reconstructive Orthopaedic Surgery profiles paid that year, the median was $1,406 and the middle half received between $318 and $8,709.

Show as a table
Year Derek Amanatullah Adult Reconstructive Orthopaedic Surgery median Middle half National median
2019 $93,721 $1,416 $292–$9,336 $163
2020 $109,911 $647 $141–$6,474 $114
2021 $74,844 $1,073 $211–$6,497 $132
2022 $122,909 $1,217 $236–$6,299 $149
2023 $116,111 $1,082 $246–$6,818 $160
2024 $136,523 $1,575 $323–$8,944 $164
2025 $174,368 $1,406 $318–$8,709 $169

Breakdown

Who paid General payments · program years 2019–2025
  1. Exactech, Inc. $333,741 57 payments
  2. Stryker Corporation $155,904 149 payments
  3. Medacta USA, Inc. $99,475 63 payments
  4. Medical Device Business Services, Inc. $70,637 70 payments
  5. DePuy Synthes Products, Inc. $33,811 29 payments
  6. restor3d, inc. $31,133 16 payments
  7. Zimmer Biomet Holdings, Inc. $21,840 37 payments
  8. Ethicon US, LLC $17,007 20 payments
  9. Smith+Nephew, Inc. $15,713 15 payments
  10. Uoc USA Inc $14,847 11 payments
  11. Other $34,279 71 payments

Every payment, record by record

What the payments were for General payments · program years 2019–2025
  1. Consulting Fee $461,221 133 payments
  2. Royalty or License $290,890 21 payments
  3. Travel and Lodging $58,052 150 payments
  4. Food and Beverage $16,822 232 payments
  5. Honoraria $1,103 1 payment
  6. Education $300 1 payment
Products named General payments · program years 2019–2025
  1. ALTEON $240,514 20 payments
  2. TRIATHLON $56,141 26 payments
  3. RESTORATION $38,801 19 payments
  4. MAKO Knees, Hips $35,899 35 payments
  5. OPTETRAK $33,167 17 payments
  6. MAKO Knees, Hips $30,211 41 payments
  7. NOVATION HIP $29,345 15 payments
  8. TRIDENT $28,734 8 payments
  9. AMISTEM Hip $23,322 21 payments
  10. AMIStem Orthopedics/Orthopedic Surgery $20,497 5 payments
  11. Other $291,864 310 payments

A payment can name more than one product, so these amounts overlap and do not add up to the general-payment figure.

Research payments came from Research payments · program years 2019–2025
  1. Zimmer Biomet Holdings, Inc. $16,650 2 payments
  2. OMNIlife science, Inc $2,233 1 payment

Prescribing to Medicare patients

Part D · data year 2024 · 1 drug

Part D claims

37

Median for Orthopedic Surgery: 203

Drug cost

$1,528

Median for Orthopedic Surgery: $1,433

Branded share of claims

0%

Median for Orthopedic Surgery: 11.6%

Drugs this doctor was counted under in Medicare Part D 2024, by drug cost
Drug Type Relative to their largest Claims Drug cost
Celecoxib Generic 37 $1,528

Drug cost is what was paid for the drugs at the pharmacy — by Medicare, the patient and others — and is not money to the prescriber. Medicare Part D only: drugs dispensed to Medicare beneficiaries. A drug with fewer than 11 claims for this prescriber is not published, so a missing drug does not mean zero. The medians are for the 18,934 Part D prescribers listed as Orthopedic Surgery; they describe a distribution and say nothing about conduct.

Billing to Medicare

Part B · data year 2024 · 50 billing codes

Paid by Medicare

$274,634

Medicare's payments for the services billed

Medicare patients

580

Average age 73

Services billed

1,354

336 women, 244 men among their patients

Share of this provider's Medicare patients with each condition
Condition among their Medicare patients Relative to the most common Share of patients
Arthritis 75%
High blood pressure 74%
Diabetes 33%
Ischemic heart disease 29%
Depression 26%
Chronic kidney disease 25%
Osteoporosis 23%
Atrial fibrillation 22%

Medicare Part B only: services billed to Medicare. Rows covering fewer than 11 beneficiaries are not published. Only drugs given in the clinic are itemised here; the rest of what this provider billed is in the total above.

Records

541 reported

Every payment, record by record

Date, company, amount, what it was for and the product named — filter by year, kind and company, or download as CSV.

Other Adult Reconstructive Orthopaedic Surgery in California

Related records

What this means

U.S. law requires drug and medical device manufacturers to report payments and transfers of value they make to physicians and teaching hospitals. The Centers for Medicare & Medicaid Services publishes that record each year. This page shows what was reported about this person, and nothing else.

An ownership interest is different from the other two. It is not a payment: it is a stake — shares, options, a partnership holding — that a physician or an immediate family member held in a manufacturer during that year. The figure shown is what the stake was reported to be worth.

Research payments frequently pass through a clinician to the institution running a trial, and rarely represent personal income. They should be read differently from general payments.

Provenance

Source: CMS Open Payments · through program year 2025

Data current to program year 2025, from CMS's 2026 publication.

We reproduce what manufacturers reported. We do not verify, edit or correct the underlying records.

A payment record is not evidence of wrongdoing. Financial relationships between industry and medicine are legal, common and often necessary for research. Who Paid My Doc reports what was disclosed; it does not judge it.

Who Paid My Doc is independent and is not affiliated with, endorsed by or sponsored by CMS or any U.S. government agency. It is not a consumer reporting agency and this is not a consumer report; do not use it for decisions covered by the Fair Credit Reporting Act.

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