X4 Pharmaceuticals, Inc.
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Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
Centers for Medicare & Medicaid Services, Open Payments
These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.
Figures reflect General Payments this manufacturer or GPO reported to CMS. Research and Ownership/Investment payments are separate datasets and are not included here.
CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state.
Payment records · PY2025
Date, newest first, then reporting company; values as published by CMS.
General Payments · PY2025 · All recipient types · CMS publication 2026-06-30
120 matching records · $312,200.98 reported total · 0 disputed
Nature of payment: All payment types
Records imported here (UTC).
Download all 120 matching records (CSV)
CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.
Showing records 1–50 of 120.
| Recipient | Paying entity | Amount | Date | Nature of payment | Dispute status | Publication flags | Published | Record ID | Source |
|---|---|---|---|---|---|---|---|---|---|
| MARK D FLEMING Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $3,187.50 | 12/04/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113245 | CMS |
| OLGA WEINBERG Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $3,200.00 | 11/20/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113259 | CMS |
| SHERIF M BADAWY Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $5,595.00 | 11/18/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113282 | CMS |
| PETER E NEWBURGER Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $283.00 | 10/23/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113274 | CMS |
| CATERINA P MINNITI Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $1,250.00 | 09/26/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113225 | CMS |
| PETER E NEWBURGER Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $1,400.00 | 09/02/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113272 | CMS |
| Dana-Farber Cancer Institute Teaching hospital | X4 Pharmaceuticals, Inc. | $983.87 | 08/18/2025 | Royalty or License | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113221 | CMS |
| MARK D FLEMING Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $4,875.00 | 08/18/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113243 | CMS |
| TERESA KATHLEEN TARRANT Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $465.00 | 08/18/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113286 | CMS |
| SERGE ALEXANIAN Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $25,000.00 | 08/12/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113215 | CMS |
| OLGA WEINBERG Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $2,400.00 | 08/12/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113257 | CMS |
| ISAAC MELAMED Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $14.32 | 08/05/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113139 | CMS |
| MARY H KING Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $14.32 | 08/05/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113159 | CMS |
| YURY GADAYEV Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $14.32 | 08/05/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113161 | CMS |
| JULIA THERESE WARREN Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $3,323.06 | 08/05/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113233 | CMS |
| SHERIF M BADAWY Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $3,730.00 | 08/05/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113280 | CMS |
| ALLISON S REMIKER Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $27.64 | 07/23/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113073 | CMS |
| SERGE ALEXANIAN Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $43,000.00 | 07/22/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113213 | CMS |
| NIRAJ CHANDRAKANT PATEL Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $1,110.00 | 07/22/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113290 | CMS |
| MARTHA M TARPAY Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $21.81 | 07/09/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113095 | CMS |
| SHAWN T FADUM Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $21.82 | 07/09/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113145 | CMS |
| Childrens Hospital Medical Center Teaching hospital | X4 Pharmaceuticals, Inc. | $5,000.00 | 07/08/2025 | Space rental or facility fees (teaching hospital only) | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113219 | CMS |
| PETER E NEWBURGER Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $1,049.00 | 07/08/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113269 | CMS |
| Univ Of Mi Hospitals & Hlth Ctrs Teaching hospital | X4 Pharmaceuticals, Inc. | $12,500.00 | 07/08/2025 | Space rental or facility fees (teaching hospital only) | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113276 | CMS |
| NIRAJ CHANDRAKANT PATEL Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $4,817.11 | 07/08/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113288 | CMS |
| DANIEL SUEZ Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $19.87 | 06/03/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113109 | CMS |
| SHERIF M BADAWY Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $132.81 | 05/28/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113051 | CMS |
| JORGE A QUEL Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $19.33 | 05/27/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113111 | CMS |
| ARLETT GUERRERO Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $19.33 | 05/27/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113151 | CMS |
| SERGE ALEXANIAN Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $5,000.00 | 05/27/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113211 | CMS |
| Childrens Hospital Corporation Teaching hospital | X4 Pharmaceuticals, Inc. | $5,000.00 | 05/27/2025 | Space rental or facility fees (teaching hospital only) | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113217 | CMS |
| DAVID CHANDLER DALE Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $4,270.00 | 05/27/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113223 | CMS |
| MARK D FLEMING Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $2,062.50 | 05/27/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113241 | CMS |
| OLGA WEINBERG Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $2,000.00 | 05/27/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113255 | CMS |
| PETER E NEWBURGER Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $940.00 | 05/27/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113267 | CMS |
| RITU PABBY Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $20.55 | 05/13/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113101 | CMS |
| DAVID P MCGARRY Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $20.55 | 05/13/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113195 | CMS |
| TODD ANDREW LEVIN Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $42.97 | 05/13/2025 | Education | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113199 | CMS |
| SERGE ALEXANIAN Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $5,000.00 | 05/13/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113209 | CMS |
| JULIA THERESE WARREN Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $3,255.00 | 05/13/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113231 | CMS |
| KELLY JO WALKOVICH Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $10,444.00 | 05/13/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113235 | CMS |
| SHERIF M BADAWY Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $5,222.00 | 05/13/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113278 | CMS |
| HARRY LAYTON LESMANA Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $34.13 | 05/03/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113063 | CMS |
| JOHN CARROLL MCDONNELL Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $34.13 | 05/03/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113065 | CMS |
| BRIAN D VICUNA Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $23.57 | 04/18/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113087 | CMS |
| HENRY PALANGDAO IGID Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $23.56 | 04/18/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113089 | CMS |
| OLGA WEINBERG Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $1,200.00 | 04/15/2025 | Consulting Fee | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113253 | CMS |
| MANISH BUTTE Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $106.37 | 04/07/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113053 | CMS |
| SANDY K YIP Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $16.52 | 04/07/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113117 | CMS |
| APRIL C ENCARNACION Physician / non-physician practitioner | X4 Pharmaceuticals, Inc. | $16.52 | 04/07/2025 | Food and Beverage | No dispute reported | Delay: No Change: NEW | 06/30/2026 | 1253113155 | CMS |
Practitioner overview · all loaded program years
207 providers listed 266 records General Payments
General Payments to practitioners — all loaded program years
- Category: General Payments
- Program years: 2024, 2025
- Record count: 266
- Providers listed: 207
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
Figures reflect General Payments this manufacturer or GPO reported to CMS. Research and Ownership/Investment payments are separate datasets and are not included here.
Coverage: program years 2019–2025, General Payments only, reported to physicians and non-physician practitioners. Payments to teaching hospitals are not included in these practitioner figures. Each figure is labeled with its category and program year; categories are never combined.
Practitioner payments by program year
| Program year | Reported | Records | Providers | Detail |
|---|---|---|---|---|
| PY2024 | $40,863.28 | 152 | 127 | This company in PY2024 → |
| PY2025 | $283,717.11 | 114 | 86 | This company in PY2025 → |
By recipient specialty (31)
Sorted by name; identical names by identifier.
Allopathic & Osteopathic Physicians 23 specialties 145 providers
- Allergy & Immunology 61
- Allergy & Immunology · Allergy 14
- Dermatology 2
- Dermatology · MOHS-Micrographic Surgery 1
- Family Medicine 2
- Hospitalist 1
- Internal Medicine 11
- Internal Medicine · Allergy & Immunology 4
- Internal Medicine · Hematology & Oncology 9
- Internal Medicine · Infectious Disease 5
- Internal Medicine · Medical Oncology 1
- Internal Medicine · Pulmonary Disease 1
- Internal Medicine · Rheumatology 2
- Ophthalmology 1
- Pathology · Anatomic Pathology 1
- Pathology · Anatomic Pathology & Clinical Pathology 2
- Pathology · Hematology 1
- Pediatrics 2
- Pediatrics · Pediatric Allergy/Immunology 9
- Pediatrics · Pediatric Hematology-Oncology 12
- Pediatrics · Pediatric Pulmonology 1
- Psychiatry & Neurology · Neurology with Special Qualifications in Child Neurology 1
- Radiology · Radiation Oncology 1
Physician Assistants & Advanced Practice Nursing Providers 8 specialties 59 providers
Providers listed (207)
Sorted by name; identical names by identifier.
| Provider | Specialty | State | Records reported by this company |
|---|---|---|---|
| AKIKO SHIMAMURA | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Hematology-Oncology | MA | 1 |
| ALEXANDRA DILUZIO | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical | GA | 1 |
| ALISON R COLEMAN | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | TX | 1 |
| ALLISON S REMIKER | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Hematology-Oncology | WI | 3 |
| ALYCIA R FOTI | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Hematology-Oncology | NJ | 1 |
| AMANDA V GRIPPEN GODDARD | Allopathic & Osteopathic Physicians|Allergy & Immunology | NM | 1 |
| AMMAR Z HATAB | Allopathic & Osteopathic Physicians|Allergy & Immunology | FL | 1 |
| AN L NGUYEN | Allopathic & Osteopathic Physicians|Allergy & Immunology | TX | 1 |
| ANDREW HWANG | Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology | CA | 1 |
| ANDREW M SINGER | Allopathic & Osteopathic Physicians|Allergy & Immunology | TN | 1 |
| ANGELA ESCOBAR | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | WA | 1 |
| ANGELA MCDONALD | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | CO | 1 |
| ANTHONY L NGUYEN | Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology | CA | 1 |
| ANTHONY RICKETTI | Allopathic & Osteopathic Physicians|Internal Medicine|Pulmonary Disease | NJ | 1 |
| ANTOINE AZAR | Allopathic & Osteopathic Physicians|Internal Medicine|Allergy & Immunology | MD | 2 |
| APARNA SHAH | — | HI | 1 |
| APRIL C ENCARNACION | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | NV | 1 |
| ARIES C GAVINO | Allopathic & Osteopathic Physicians|Allergy & Immunology | TX | 1 |
| ARLETT GUERRERO | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | CA | 1 |
| BRIAN D MODENA | Allopathic & Osteopathic Physicians|Allergy & Immunology | CA | 1 |
| BRIAN D VICUNA | Allopathic & Osteopathic Physicians|Internal Medicine|Medical Oncology | NV | 1 |
| BRIAN E TISON | Allopathic & Osteopathic Physicians|Allergy & Immunology | TX | 1 |
| BROOKE MATTHEWS | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Primary Care | GA | 1 |
| CARA DEBUSK | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical | FL | 1 |
| CAROL BUKER THOMPSON | Allopathic & Osteopathic Physicians|Dermatology|MOHS-Micrographic Surgery | KY | 1 |
| CATERINA P MINNITI | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Hematology-Oncology | DC | 1 |
| CHARITY ANN HUANG | Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology | CA | 1 |
| CHARMI PATEL | Allopathic & Osteopathic Physicians|Internal Medicine|Allergy & Immunology | GA | 1 |
| CHELSEA R MICHAUD | Allopathic & Osteopathic Physicians|Allergy & Immunology | ME | 2 |
| CHLOE ANNALEWISE PACHECO | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner | NM | 1 |
| CLARK WYATT | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | ID | 1 |
| CLINTON CARROLL | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Hematology-Oncology | TN | 1 |
| CONNIE MICHELE PIERCE | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | TN | 1 |
| COREY DEBERRY-SEGUINE | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | AZ | 1 |
| CRAIG WOO | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | CA | 1 |
| DANA R BLACK | Allopathic & Osteopathic Physicians|Dermatology | KY | 1 |
| DANA VONETTE WALLACE | Allopathic & Osteopathic Physicians|Allergy & Immunology | FL | 1 |
| DANIEL DIGIACOMO | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Allergy/Immunology | NJ | 1 |
| DANIEL P HILTON | Allopathic & Osteopathic Physicians|Internal Medicine | CA | 1 |
| DANIEL SUEZ | Allopathic & Osteopathic Physicians|Allergy & Immunology | TX | 1 |
| DANIELLE RENEE GUIDABEN | Allopathic & Osteopathic Physicians|Hospitalist | CA | 1 |
| DARLENE MARIE MADORE | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner | MA | 1 |
| DAVID A PETTY | Allopathic & Osteopathic Physicians|Allergy & Immunology|Allergy | ID | 1 |
| DAVID AMRAN | Allopathic & Osteopathic Physicians|Allergy & Immunology | TX | 1 |
| DAVID CHANDLER DALE | Allopathic & Osteopathic Physicians|Internal Medicine | WA | 1 |
| DAVID E PALLARES | Allopathic & Osteopathic Physicians|Allergy & Immunology | KY | 1 |
| DAVID L PATTERSON | Allopathic & Osteopathic Physicians|Allergy & Immunology | IN | 1 |
| DAVID P MCGARRY | Allopathic & Osteopathic Physicians|Allergy & Immunology | WA | 1 |
| DEBRA GRINER | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | WY | 1 |
| DENISE VIEKMAN | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner | ME | 1 |