Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · PY2019–2021 Search official records Methodology

Adamas Pharmaceuticals, Inc.

3,632 providers listed $2,315,615.37 reported 20,045 records General Payments

General Payments reported — all loaded program years

$2,315,615.37

  • Category: General Payments
  • Program years: 2019, 2020, 2021
  • Record count: 20,045
  • Providers listed: 3,632

Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.

How this figure is calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. Nothing is estimated, weighted, or combined across categories.
  • Figures reflect General Payments this manufacturer or GPO reported to CMS. Research and Ownership/Investment payments are separate datasets and are not included here.
  • Methodology & Data — sourcing, labeling, and limitations.

Coverage: program years 2019–2025, General Payments only. Each figure is labeled with its category and program year; categories are never combined.

By program year

Program yearReportedRecordsProviders
PY2019 $1,036,602.03 6,946 2,059
PY2020 $572,897.24 5,711 1,759
PY2021 $706,116.10 7,388 2,227

By recipient specialty (25 shown)

Sorted by reported total.

SpecialtyReportedRecordsProviders
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology $2,147,115.45 16,066 2,461
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Psychiatry $63,550.73 158 28
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family $8,625.69 519 181
Allopathic & Osteopathic Physicians|Internal Medicine $8,380.32 224 87
Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant $6,535.44 370 113
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner $5,813.72 270 106
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Clinical Neurophysiology $5,507.16 350 39
Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical $3,224.14 125 38
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology with Special Qualifications in Child Neurology $2,304.30 134 34
Allopathic & Osteopathic Physicians|Neurological Surgery $1,937.22 105 39
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Sleep Medicine $1,833.83 91 19
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health $1,760.98 92 33
Allopathic & Osteopathic Physicians|Family Medicine $1,541.28 78 45
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Epilepsy $1,382.22 94 11
Allopathic & Osteopathic Physicians|Physical Medicine & Rehabilitation $1,238.23 66 24
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neuromuscular Medicine $1,123.75 68 12
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Acute Care $697.70 37 17
Allopathic & Osteopathic Physicians|Neuromusculoskeletal Medicine & OMM $654.33 48 10
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Vascular Neurology $653.42 34 14
Allopathic & Osteopathic Physicians|Hospitalist $583.42 40 27
Allopathic & Osteopathic Physicians|Internal Medicine|Nephrology $516.53 26 6
Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Surgical $498.32 24 4
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Gerontology $430.48 23 12
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Diagnostic Neuroimaging $407.48 27 5
Allopathic & Osteopathic Physicians|Radiology|Diagnostic Radiology $398.30 20 13

Providers listed (3,632)

Sorted by name. Sort by amount instead

ProviderSpecialtyStateReported by this company
WILLIAM G ONDO Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology TX $16,804.39
WILLIAM H FLEMING Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology TX $388.43
WILLIAM H HEWITT Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology AL $68.26
WILLIAM HAYWARD Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology MD $23.67
WILLIAM HONEYCUTT FL $14.71
WILLIAM J ESTRIN Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology CA $255.78
WILLIAM J KINGSTON Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology NY $62.85
WILLIAM KILGO Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology AL $17.48
WILLIAM KNUBLEY Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology AR $189.99
WILLIAM M MALLONEE Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology KS $14.17
WILLIAM P BUCKLEY Allopathic & Osteopathic Physicians|Internal Medicine IN $19.27
WILLIAM R ROSSING Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology SD $51.21
WILLIAM R SUNTER Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology FL $28.63
WILLIAM R YORNS Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology with Special Qualifications in Child Neurology CT $12.96
WILLIAM SOMMERS DE $109.95
WILLIAM STUART BIKOFF Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology GA $51.90
WILLIAM TUNG GA $123.00
WILLIAM WAGNER Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology CO $39.35
WILSON T ASFORA Allopathic & Osteopathic Physicians|Neurological Surgery FL $17.25
WINONA TSE Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology NY $103.74
WINSTON ORTIZ Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology FL $95.21
WINTHROP S RISK Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology IA $96.20
WONHEE LEE Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family CA $39.81
WRIGHT D SHIELDS Allopathic & Osteopathic Physicians|Internal Medicine NC $12.14
WYNTER N PHOENIX Allopathic & Osteopathic Physicians|Surgery CA $11.26
XIANGHUI X CAO Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology VA $72.07
XIAOMING DONG Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology MN $13.19
XIAOSI HAN Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology AL $38.29
XIAOYAN GUO Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology GA $262.31
XIHUA SUN CA $450.60
XIN WANG Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology PA $123.44
XING-JIE WANG NY $132.53
XIULI LI Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology NY $23.44
YAEL RAPPEPORT NY $46.57
YAMINI P CHENNU Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology TX $156.64
YAN QI PA $28.45
YANIV CHEN Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology CT $89.40
YAOHUI CHAI Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology TN $37.17
YASAR TORRES-YAGHI Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology DC $7,264.54
YAWEN WANG Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology CA $68.26
YEHKYOUNG C STEPHENS Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant MN $85.27
YELENA G VIDGOP Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology FL $18.23
YELENA SHPIGEL Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology PA $65.13
YEN LE Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant PA $134.62
YEN-YI PENG Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology NV $32.74
YESENIA ENRIQUEZ GONZALEZ Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology NY $38.59
YEVGENIY I KHESIN Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology NJ $24.52
YINGJUN LI Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology MD $87.93
YONG HE Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology TX $102.91
YONGLU HUANG Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology PA $11.99