Healthcare provider profile · identity verified

Mark Turrill, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Medical Oncology · LAKEPORT, CA · NPI 1568542314

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Mark Turrill, M.D. received $133.99 in general payments during 2025 across 6 reported records.

Alexion Pharmaceuticals, Inc. accounted for 21.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 8 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Xtandi.

Celgene Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 25 records involving 24 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Eliquis by this doctor in 2024.

Celgene Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported POMALYST as an associated drug or biological on 282 records involving 237 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Pomalyst by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Eliquis by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported IBRANCE as an associated drug or biological on 11505 records involving 4934 distinct recipient NPIs. Public Medicare Part D data also shows 32 claims for Ibrance by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported XTANDI as an associated drug or biological on 19368 records involving 7657 distinct recipient NPIs. Public Medicare Part D data also shows 36 claims for Xtandi by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$133.99

6 reported records · 6 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $28.7221.4%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $27.8520.8%12025
PFIZER INC. Unresolved — no canonical attribution shown $21.3415.9%12025
Acrotech Biopharma Inc. Unresolved — no canonical attribution shown $21.1715.8%12025
TerSera Therapeutics LLC Unresolved — no canonical attribution shown $18.3913.7%12025
Celgene Corporation Unresolved — no canonical attribution shown $16.5212.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$133.996

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
ULTOMIRIS
Normalized: ultomiris
Biological Alexion Pharmaceuticals, Inc. $28.72 1 2025
Source payment records
OJJAARA
Normalized: ojjaara
Drug GlaxoSmithKline, LLC. $27.85 1 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug PFIZER INC. $21.34 1 2025
Source payment records
TALZENNA
Normalized: talzenna
Drug PFIZER INC. $21.34 1 2025
Source payment records
XTANDI
Normalized: xtandi
Drug PFIZER INC. $21.34 1 2025
Source payment records
BELEODAQ
Normalized: beleodaq
Drug Acrotech Biopharma Inc. $21.17 1 2025
Source payment records
Zoladex
Normalized: zoladex
Drug TerSera Therapeutics LLC $18.39 1 2025
Source payment records
OPDIVO
Normalized: opdivo
Biological Celgene Corporation $16.52 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
XTANDI
xtandi
2025 Xtandi 2024 36
Beneficiary count suppressed
exact normalized Medicare Part D

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
Celgene Corporation
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
25 supporting records · 24 recipient NPIs · example record 1184385048
Eliquis · 2024
Exact normalized brand match · 1 Part D row
19 suppressed by CMS
Celgene Corporation
Exact reporting entity; no affiliate inference
2025 POMALYST
open payments reported associated product
CMS Open Payments — General Payments
282 supporting records · 237 recipient NPIs · example record 1184378437
Pomalyst · 2024
Exact normalized brand match · 1 Part D row
13 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
19 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 IBRANCE
open payments reported associated product
CMS Open Payments — General Payments
11505 supporting records · 4934 recipient NPIs · example record 1228794164
Ibrance · 2024
Exact normalized brand match · 1 Part D row
32 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 XTANDI
open payments reported associated product
CMS Open Payments — General Payments
19368 supporting records · 7657 recipient NPIs · example record 1228794230
Xtandi · 2024
Exact normalized brand match · 1 Part D row
36 suppressed by CMS

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
AnastrozoleAnastrozole15939
PrednisonePrednisone10223
GabapentinGabapentin7014
Amlodipine BesylateAmlodipine Besylate6915
Alendronate SodiumAlendronate Sodium6611
Levothyroxine SodiumLevothyroxine Sodium6615
Abiraterone AcetateAbiraterone Acetate65suppressed
HydroxyureaHydroxyurea62suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen6114
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen5513
Tamoxifen CitrateTamoxifen Citrate5412
MirtazapineMirtazapine5012
Ondansetron OdtOndansetron4517
JakafiRuxolitinib Phosphate44suppressed
LetrozoleLetrozole4411
BicalutamideBicalutamide39suppressed
Tramadol HclTramadol Hcl39suppressed
AcyclovirAcyclovir37suppressed
XtandiEnzalutamide36suppressed
Morphine Sulfate ErMorphine Sulfate35suppressed
Duloxetine HclDuloxetine Hcl34suppressed
XareltoRivaroxaban34suppressed
IbrancePalbociclib32suppressed
FurosemideFurosemide30suppressed
LorazepamLorazepam29suppressed
Raloxifene HclRaloxifene Hcl29suppressed
PregabalinPregabalin27suppressed
Tamsulosin HclTamsulosin Hcl2711
Warfarin SodiumWarfarin Sodium26suppressed
BrukinsaZanubrutinib25suppressed
LisinoprilLisinopril25suppressed
Morphine SulfateMorphine Sulfate25suppressed
Potassium ChloridePotassium Chloride25suppressed
ImbruvicaIbrutinib24suppressed
FinasterideFinasteride23suppressed
SpironolactoneSpironolactone23suppressed
DexamethasoneDexamethasone22suppressed
Oxycodone HclOxycodone Hcl21suppressed
EliquisApixaban19suppressed
ExemestaneExemestane19suppressed
Metoprolol SuccinateMetoprolol Succinate18suppressed
Zolpidem TartrateZolpidem Tartrate17suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim16suppressed
Sumatriptan SuccinateSumatriptan Succinate16suppressed
Trazodone HclTrazodone Hcl16suppressed
Atorvastatin CalciumAtorvastatin Calcium15suppressed
Metformin HclMetformin Hcl15suppressed
OmeprazoleOmeprazole15suppressed
AlecensaAlectinib Hcl14suppressed
AllopurinolAllopurinol13suppressed
Anagrelide HclAnagrelide Hcl13suppressed
Pantoprazole SodiumPantoprazole Sodium13suppressed
PomalystPomalidomide13suppressed
CalquenceAcalabrutinib Maleate12suppressed
Hydromorphone HclHydromorphone Hcl12suppressed
KisqaliRibociclib Succinate12suppressed
Bethanechol ChlorideBethanechol Chloride11suppressed
Buspirone HclBuspirone Hcl11suppressed
Hydroxyzine HclHydroxyzine Hcl11suppressed
Prochlorperazine MaleateProchlorperazine Maleate11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $133.99 · 6 records Alexion Pharmaceuticals, Inc. BELEODAQ, OJJAARA, OPDIVO, ORGOVYX, TALZENNA, ULTOMIRIS, XTANDI, Zoladex 5
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

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