Healthcare provider profile · identity verified

Mark Buchfuhrer, MD

Allopathic & Osteopathic Physicians|Internal Medicine · DOWNEY, CA · NPI 1639130693

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 Buchfuhrer, MD received $23,009.59 in general payments during 2025 across 128 reported records.

Noctrix Health, Inc. accounted for 88.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 26 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Belbuca, Horizant, Nucala, Ofev, Trelegy Ellipta.

Azurity Pharmaceuticals, 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 HORIZANT as an associated drug or biological on 2733 records involving 1696 distinct recipient NPIs. Public Medicare Part D data also shows 49 claims for Horizant by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, 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 OFEV as an associated drug or biological on 14236 records involving 6873 distinct recipient NPIs. Public Medicare Part D data also shows 33 claims for Ofev by this doctor in 2024.

Collegium Pharmaceutical, 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 BELBUCA as an associated drug or biological on 17475 records involving 4385 distinct recipient NPIs. Public Medicare Part D data also shows 110 claims for Belbuca by this doctor in 2024.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported NUCALA as an associated drug or biological on 100127 records involving 16970 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Nucala by this doctor in 2024.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 811 claims for Trelegy Ellipta by this doctor in 2024.

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

Payment overview · 2025

General Payments

$23,009.59

128 reported records · 20 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
Noctrix Health, Inc. Unresolved — no canonical attribution shown $20,302.3488.2%222025
JAZZ PHARMACEUTICALS INC. Unresolved — no canonical attribution shown $452.762.0%92025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $397.081.7%222025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $364.631.6%132025
HARMONY BIOSCIENCES LLC Unresolved — no canonical attribution shown $319.541.4%92025
Avadel CNS Pharmaceuticals, LLC Unresolved — no canonical attribution shown $188.120.8%82025
GENZYME CORPORATION Unresolved — no canonical attribution shown $171.740.8%72025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $165.120.7%72025
Collegium Pharmaceutical, Inc. Unresolved — no canonical attribution shown $149.750.7%82025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $98.340.4%42025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $90.190.4%32025
Verona Pharma, Inc. Unresolved — no canonical attribution shown $60.990.3%22025
Lilly USA, LLC Unresolved — no canonical attribution shown $51.900.2%22025
Electromed, Inc. Unresolved — no canonical attribution shown $42.300.2%52025
Insmed, Inc. Unresolved — no canonical attribution shown $35.480.1%22025
Amgen Inc. Unresolved — no canonical attribution shown $30.830.1%12025
Azurity Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $30.590.1%12025
ANI Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $20.400.1%12025
Viatris Specialty LLC Unresolved — no canonical attribution shown $19.270.1%12025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $18.220.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Consulting Fee$13,824.007
Honoraria$4,585.0011
Food and Beverage$2,801.33105
Travel and Lodging$1,610.263
Education$189.002

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
NIDRA
Normalized: nidra
Device Noctrix Health, Inc. $20,302.34 22 2025
Source payment records
XYWAV
Normalized: xywav
Drug JAZZ PHARMACEUTICALS INC. $397.31 8 2025
Source payment records
WAKIX
Normalized: wakix
Drug HARMONY BIOSCIENCES LLC $319.54 9 2025
Source payment records
DUPIXENT
Normalized: dupixent
Biological GENZYME CORPORATION, Regeneron Healthcare Solutions, Inc. $261.93 10 2025
Source payment records
LUMRYZ
Normalized: lumryz
Drug Avadel CNS Pharmaceuticals, LLC $188.12 8 2025
Source payment records
BENLYSTA
Normalized: benlysta
Biological GlaxoSmithKline, LLC. $186.72 10 2025
Source payment records
COSENTYX
Normalized: cosentyx
Drug Novartis Pharmaceuticals Corporation $165.12 7 2025
Source payment records
OFEV
Normalized: ofev
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $153.56 5 2025
Source payment records
NUCALA
Normalized: nucala
Biological GlaxoSmithKline, LLC. $150.15 7 2025
Source payment records
Belbuca
Normalized: belbuca
Drug Collegium Pharmaceutical, Inc. $149.75 8 2025
Source payment records
JASCAYD
Normalized: jascayd
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $127.26 5 2025
Source payment records
TEZSPIRE
Normalized: tezspire
Biological AstraZeneca Pharmaceuticals LP $72.13 3 2025
Source payment records
Ohtuvayre
Normalized: ohtuvayre
Drug Verona Pharma, Inc. $60.99 2 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $60.21 5 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $51.90 2 2025
Source payment records
SMARTVEST
Normalized: smartvest
Device Electromed, Inc. $42.30 5 2025
Source payment records
Arikayce
Normalized: arikayce
Drug Insmed, Inc. $35.48 2 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $31.05 1 2025
Source payment records
Otezla
Normalized: otezla
Drug Amgen Inc. $30.83 1 2025
Source payment records
HORIZANT
Normalized: horizant
Drug Azurity Pharmaceuticals, Inc. $30.59 1 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $26.21 1 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $22.85 2 2025
Source payment records
PURIFIED CORTROPHIN GEL
Normalized: purified cortrophin gel
Drug ANI Pharmaceuticals, Inc. $20.40 1 2025
Source payment records
YUPELRI
Normalized: yupelri
Drug Viatris Specialty LLC $19.27 1 2025
Source payment records
Sunosi
Normalized: sunosi
Drug Axsome Therapeutics, Inc. $18.22 1 2025
Source payment records
Brinsupri
Normalized: brinsupri
Drug Insmed, Inc. $17.76 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
Belbuca
belbuca
2025 Belbuca 2024 110 exact normalized Medicare Part D
HORIZANT
horizant
2025 Horizant 2024 49
Beneficiary count suppressed
exact normalized Medicare Part D
NUCALA
nucala
2025 Nucala 2024 18
Beneficiary count suppressed
exact normalized Medicare Part D
OFEV
ofev
2025 Ofev 2024 33
Beneficiary count suppressed
exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 811 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
Azurity Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 HORIZANT
open payments reported associated product
CMS Open Payments — General Payments
2733 supporting records · 1696 recipient NPIs · example record 1242666828
Horizant · 2024
Exact normalized brand match · 1 Part D row
49 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 OFEV
open payments reported associated product
CMS Open Payments — General Payments
14236 supporting records · 6873 recipient NPIs · example record 1221811762
Ofev · 2024
Exact normalized brand match · 1 Part D row
33 suppressed by CMS
Collegium Pharmaceutical, Inc.
Exact reporting entity; no affiliate inference
2025 BELBUCA
open payments reported associated product
CMS Open Payments — General Payments
17475 supporting records · 4385 recipient NPIs · example record 1224105020
Belbuca · 2024
Exact normalized brand match · 1 Part D row
110 16
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 NUCALA
open payments reported associated product
CMS Open Payments — General Payments
100127 supporting records · 16970 recipient NPIs · example record 1190332378
Nucala · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
811 173

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
Trelegy ElliptaFluticasone/Umeclidin/Vilanter811173
Methadone HclMethadone Hcl47589
Fluticasone PropionateFluticasone Propionate323127
GabapentinGabapentin27461
Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl24270
Oxycodone HclOxycodone Hcl23437
Atorvastatin CalciumAtorvastatin Calcium22366
Carbidopa-LevodopaCarbidopa/Levodopa20577
Albuterol Sulfate HfaAlbuterol Sulfate18768
Breo ElliptaFluticasone/Vilanterol17132
PregabalinPregabalin15721
Zolpidem TartrateZolpidem Tartrate15437
Montelukast SodiumMontelukast Sodium12632
LisinoprilLisinopril12132
BelbucaBuprenorphine Hcl11016
PrednisonePrednisone10878
Levothyroxine SodiumLevothyroxine Sodium9525
Tramadol HclTramadol Hcl8322
Losartan PotassiumLosartan Potassium7521
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen7314
Amlodipine BesylateAmlodipine Besylate7025
Wixela InhubFluticasone Propion/Salmeterol7019
Metformin HclMetformin Hcl6316
NeuproRotigotine6315
AtenololAtenolol6113
Pramipexole DihydrochloridePramipexole Di-Hcl5614
Hydromorphone HclHydromorphone Hcl55suppressed
JanuviaSitagliptin Phosphate50suppressed
HorizantGabapentin Enacarbil49suppressed
OmeprazoleOmeprazole4811
AlprazolamAlprazolam4414
OxycontinOxycodone Hcl42suppressed
Pantoprazole SodiumPantoprazole Sodium4211
Fluticasone-SalmeterolFluticasone Propion/Salmeterol39suppressed
HydrochlorothiazideHydrochlorothiazide3711
Breztri AerosphereBudesonide/Glycopyr/Formoterol3611
SimvastatinSimvastatin3512
Fluoxetine HclFluoxetine Hcl34suppressed
OfevNintedanib Esylate33suppressed
Sertraline HclSertraline Hcl33suppressed
IrbesartanIrbesartan32suppressed
Morphine Sulfate ErMorphine Sulfate30suppressed
BreynaBudesonide/Formoterol Fumarate28suppressed
Morphine SulfateMorphine Sulfate28suppressed
Tamsulosin HclTamsulosin Hcl28suppressed
Trazodone HclTrazodone Hcl27suppressed
MovantikNaloxegol Oxalate26suppressed
Ropinirole HclRopinirole Hcl2511
XareltoRivaroxaban25suppressed
Bupropion XlBupropion Hcl24suppressed
FamotidineFamotidine22suppressed
Metoprolol SuccinateMetoprolol Succinate22suppressed
Diclofenac SodiumDiclofenac Sodium21suppressed
EzetimibeEzetimibe21suppressed
Varenicline TartrateVarenicline Tartrate21suppressed
LorazepamLorazepam20suppressed
CelecoxibCelecoxib18suppressed
EliquisApixaban18suppressed
NucalaMepolizumab18suppressed
Fluticasone-VilanterolFluticasone/Vilanterol17suppressed
Rosuvastatin CalciumRosuvastatin Calcium17suppressed
Pravastatin SodiumPravastatin Sodium16suppressed
Ventolin HfaAlbuterol Sulfate16suppressed
Paroxetine HclParoxetine Hcl15suppressed
Clonidine HclClonidine Hcl14suppressed
AllopurinolAllopurinol13suppressed
CarvedilolCarvedilol13suppressed
Felodipine ErFelodipine13suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr12suppressed
ArmodafinilArmodafinil12suppressed
AtivanLorazepam12suppressed
BaclofenBaclofen12suppressed
BelsomraSuvorexant12suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa12suppressed
PirfenidonePirfenidone12suppressed
LinzessLinaclotide11suppressed
Nifedipine ErNifedipine11suppressed
Tramadol Hcl ErTramadol Hcl11suppressed

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 $23,009.59 · 128 records Noctrix Health, Inc. AREXVY, Arikayce, BENLYSTA, BREZTRI, Belbuca, Brinsupri, COSENTYX, DUPIXENT, HORIZANT, JASCAYD, LUMRYZ, MOUNJARO, NIDRA, NUCALA, OFEV, Ohtuvayre, Otezla, PURIFIED CORTROPHIN GEL, SMARTVEST, Sunosi, TEZSPIRE, TRELEGY ELLIPTA, WAKIX, XYWAV, YUPELRI, ZEPBOUND 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

Full methodology · Questions & answers · Report a possible error