HARRY MATOSSIAN
Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology UKIAH, CA NPI 1316945702
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology CA Gilead Sciences, Inc. All categories
General Payments — all program years on this page
$658.16
- Category: General Payments
- Program years: PY2018
- Record count: 30
- As of (CMS publication): 2026-01-23
Latest program year (PY2018): $658.16 across 30 records · disputed records: 0
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How this figure is calculated
- The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
- General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
- Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
- Methodology & Data — sourcing, labeling, and limitations.
By nature of payment
Latest program year (PY2018) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $658.16 | 30 |
By paying entity
Latest program year (PY2018) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Gilead Sciences, Inc. | $449.82 | 24 |
| Janssen Scientific Affairs, LLC | $122.21 | 1 |
| PFIZER INC. | $34.02 | 2 |
| Allergan Inc. | $21.73 | 1 |
| ABBVIE INC. | $18.08 | 1 |
| Prometheus Laboratories Inc. | $12.30 | 1 |
By program year
| Program year | Amount | Records |
|---|---|---|
| 2018 | $658.16 | 30 |
Records — PY2018 (30)
Provenance & corrections
- Dataset: CMS Open Payments — General Payments
- Source: CMS Open Payments dataset (bulk file)
- Publisher of source data: Centers for Medicare & Medicaid Services
- Generated from: OP_DTL_GNRL_PGYR2018_P01232026_01102026.csv
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Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.