California / Department of Public Health / Research Scientist II (Chemical Sciences)

Job-title file

Research Scientist II (Chemical Sciences)

Collect and analyze data to inform decisions, produce reports, and identify trends.

41 employees hold this title in Department of Public Health. Median total compensation for the role is $113,482, above the department median of $92,430.

Employees: 41
Total payroll: $4.1M
Role median: $113,482
Agency median: $92,430
Comparison: Above

What the records show

Role pay distribution

Pay distribution for this role

-$720$121,631+

Hover a bar for its range; click to filter the list below.

How total compensation varies among the 41 people in this role. Even for one job title, pay differs with seniority, step, overtime, and tenure. Each bar is a pay range; the far-right bar collects the highest earners.

Compare departments

This role across California

Research Scientist II (Chemical Sciences) is held in 3 California departments. In Department of Public Health, the median of $113,482 ranks #1 of 3.

Highest-paying departments for this role

Toxic Substances Control

$107,381 · 17

Department of Cannabis Control

$104,696 · 2

Median total compensation for the Research Scientist II (Chemical Sciences) role in other Californiadepartments (highest first). Each bar links to that department’s page for this role.

Compare jurisdictions

Research Scientist beyond California

This role is reported in 6 jurisdictions. In California, the median of $104,459 ranks #2 of 6. See Research Scientist across all of California →

Highest-paying jurisdictions for this role

$109,532 · 158

$96,654 · 395

$80,039 · 10

$73,100 · 13

$60,000 · 7

Median total compensation for comparable Research Scientistroles in other jurisdictions. Titles are matched by normalized name across sources, not identical job classification, and pay is not cost-of-living adjusted. Each bar links to that jurisdiction’s page for the role.

Record list

Employees with this title

Page 1

Jeffrey Aduviso

Research Scientist II (Chemical Sciences)/Department of Public Health

2024 total comp

$109,333

Base pay: $109,333
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $109,333
Employment type: Full-Time
Union / bargaining unit: R10
Work county: Contra Costa
Middle name: E

Source-specific fields

Base Pay: $9,422
Cs/csu: Cs
Position Number: 5805305581026
Salary Total: $9,422
Total Pay: $109,333

Jeffrey Aduviso works as a Research Scientist II (Chemical Sciences) for Department of Public Health. Their status is full-time. Jeffrey earned $109,333 in 2024. Union affiliation: R10.

Lei Zhang

Research Scientist II (Chemical Sciences)/Department of Public Health

2025 total comp

$107,675

Base pay: $107,425
Overtime: $0
Other pay: $250
Benefits: $0
Total compensation: $107,675
Employment type: Full-Time
Union / bargaining unit: R10
Work county: Contra Costa

Source-specific fields

Base Pay: $9,799
Cs/csu: Cs
Position Number: 5807235581002
Salary Total: $9,902
Total Pay: $107,675

Lei Zhang is a Research Scientist II (Chemical Sciences) at Department of Public Health. They work full-time. 2025 total compensation came to $107,675. Union affiliation: R10.

Carlos Ortega

Research Scientist II (Chemical Sciences)/Department of Public Health

2025 total comp

$107,347

Base pay: $107,097
Overtime: $0
Other pay: $250
Benefits: $0
Total compensation: $107,347
Employment type: Full-Time
Union / bargaining unit: R10
Work county: Contra Costa
Middle name: A

Source-specific fields

Base Pay: $9,304
Cs/csu: Cs
Position Number: 5805305581030
Salary Total: $9,228
Total Pay: $107,347

Carlos Ortega is a Research Scientist II (Chemical Sciences) at Department of Public Health. They work full-time. 2025 total compensation came to $107,347. Their bargaining unit is R10.

Ruihong Xiao

Research Scientist II (Chemical Sciences)/Department of Public Health

2025 total comp

$106,692

Base pay: $106,442
Overtime: $0
Other pay: $250
Benefits: $0
Total compensation: $106,692
Employment type: Full-Time
Union / bargaining unit: R10
Work county: Contra Costa

Source-specific fields

Base Pay: $8,860
Cs/csu: Cs
Position Number: 5807215581020
Salary Total: $8,977
Total Pay: $106,692

Ruihong Xiao works as a Research Scientist II (Chemical Sciences) for Department of Public Health. Their status is full-time. Ruihong earned $106,692 in 2025. They are represented by R10.

Nova Tasnima

Research Scientist II (Chemical Sciences)/Department of Public Health

2024 total comp

$106,080

Base pay: $106,080
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $106,080
Employment type: Full-Time
Union / bargaining unit: R10
Work county: Contra Costa
Middle name: I

Source-specific fields

Base Pay: $9,422
Cs/csu: Cs
Position Number: 5807225581018
Salary Total: $9,610
Total Pay: $106,080

Nova Tasnima holds the role of Research Scientist II (Chemical Sciences) at Department of Public Health. Their status is full-time. In 2024, their total compensation was $106,080. They are represented by R10.

Jeremiah Vongsa

Research Scientist II (Chemical Sciences)/Department of Public Health

2025 total comp

$105,776

Base pay: $105,526
Overtime: $0
Other pay: $250
Benefits: $0
Total compensation: $105,776
Employment type: Full-Time
Union / bargaining unit: R10
Work county: Contra Costa
Middle name: L

Source-specific fields

Base Pay: $9,304
Cs/csu: Cs
Position Number: 5805305581007
Salary Total: $9,228
Total Pay: $105,776

At Department of Public Health, Jeremiah Vongsa serves as a Research Scientist II (Chemical Sciences). They work full-time. Their 2025 pay totaled $105,776. Their bargaining unit is R10.