California / Toxic Substances Control / Senior Toxicologist

Job-title file

Senior Toxicologist

Carry out the duties of this position in support of the agency's public mission.

10 employees hold this title in Toxic Substances Control. Median total compensation for the role is $171,686, above the department median of $102,059.

Employees: 10
Total payroll: $1.8M
Role median: $171,686
Agency median: $102,059
Comparison: Above

What the records show

Role pay distribution

Pay distribution for this role

$150,927$234,799+

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

How total compensation varies among the 10 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

Senior Toxicologist is held in 3 California departments. In Toxic Substances Control, the median of $171,686 ranks #2 of 3.

Highest-paying departments for this role

Pesticide Regulation

$184,034 · 7

Envirnmtl Health Hazrd Assess

$168,097 · 15

Median total compensation for the Senior Toxicologist role in other Californiadepartments (highest first). Each bar links to that department’s page for this role.

Record list

Employees with this title

Page 1

Brian Endlich

Senior Toxicologist/Toxic Substances Control

2023 total comp

$242,093

Base pay: $106,996
Overtime: $0
Other pay: $135,096
Benefits: $0
Total compensation: $242,093
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Sacramento
Middle name: P

Source-specific fields

Base Pay: $14,840
Cs/csu: Cs
Position Number: 8105717943001
Salary Total: $15,285
Total Pay: $242,093

Brian Endlich is a Senior Toxicologist at Toxic Substances Control. They work full-time. 2023 total compensation came to $242,093. They are represented by S10.

Claudio Sorrentino

Senior Toxicologist/Toxic Substances Control

2025 total comp

$201,573

Base pay: $201,073
Overtime: $0
Other pay: $500
Benefits: $0
Total compensation: $201,573
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Sacramento

Source-specific fields

Base Pay: $16,359
Cs/csu: Cs
Position Number: 8105717943020
Salary Total: $16,932
Total Pay: $201,573

Claudio Sorrentino works as a Senior Toxicologist for Toxic Substances Control. Their status is full-time. Claudio earned $201,573 in 2025. They are represented by S10.

Brian Faulkner

Senior Toxicologist/Toxic Substances Control

2025 total comp

$201,323

Base pay: $201,073
Overtime: $0
Other pay: $250
Benefits: $0
Total compensation: $201,323
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Sacramento
Middle name: C

Source-specific fields

Base Pay: $16,359
Cs/csu: Cs
Position Number: 8105717943014
Salary Total: $16,932
Total Pay: $201,323

Brian Faulkner works as a Senior Toxicologist for Toxic Substances Control. Their status is full-time. Brian earned $201,323 in 2025. Their bargaining unit is S10.

Shukla Roy-Semmen

Senior Toxicologist/Toxic Substances Control

2025 total comp

$200,617

Base pay: $200,117
Overtime: $0
Other pay: $500
Benefits: $0
Total compensation: $200,617
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Orange

Source-specific fields

Base Pay: $16,359
Cs/csu: Cs
Position Number: 8105747943014
Salary Total: $16,768
Total Pay: $200,617

Shukla Roy-Semmen is a Senior Toxicologist at Toxic Substances Control. They work full-time. 2025 total compensation came to $200,617. Their bargaining unit is S10.

Valerie Hanley

Senior Toxicologist/Toxic Substances Control

2025 total comp

$173,792

Base pay: $173,142
Overtime: $0
Other pay: $650
Benefits: $0
Total compensation: $173,792
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Orange
Middle name: M

Source-specific fields

Base Pay: $14,732
Cs/csu: Cs
Position Number: 8105747943001
Salary Total: $15,248
Total Pay: $173,792

At Toxic Substances Control, Valerie Hanley serves as a Senior Toxicologist. They work full-time. Their 2025 pay totaled $173,792. Union affiliation: S10.

Thomas Booze

Senior Toxicologist/Toxic Substances Control

2023 total comp

$169,579

Base pay: $122,282
Overtime: $0
Other pay: $47,298
Benefits: $0
Total compensation: $169,579
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Sacramento
Middle name: F

Source-specific fields

Base Pay: $14,840
Cs/csu: Cs
Position Number: 8105717943012
Salary Total: $15,285
Total Pay: $169,579

Thomas Booze works as a Senior Toxicologist for Toxic Substances Control. Their status is full-time. Thomas earned $169,579 in 2023. Union affiliation: S10.

Vivek Mathrani

Senior Toxicologist/Toxic Substances Control

2025 total comp

$168,210

Base pay: $167,785
Overtime: $0
Other pay: $425
Benefits: $0
Total compensation: $168,210
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Alameda
Middle name: C

Source-specific fields

Base Pay: $14,030
Cs/csu: Cs
Position Number: 8105727943001
Salary Total: $14,381
Total Pay: $168,210

Vivek Mathrani works as a Senior Toxicologist for Toxic Substances Control. Their status is full-time. Vivek earned $168,210 in 2025. They are represented by S10.

Chawn Jeng

Senior Toxicologist/Toxic Substances Control

2025 total comp

$164,489

Base pay: $163,989
Overtime: $0
Other pay: $500
Benefits: $0
Total compensation: $164,489
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Orange
Middle name: Y

Source-specific fields

Base Pay: $14,030
Cs/csu: Cs
Position Number: 8105747943013
Salary Total: $14,521
Total Pay: $164,489

At Toxic Substances Control, Chawn Jeng serves as a Senior Toxicologist. They work full-time. Their 2025 pay totaled $164,489. Union affiliation: S10.

Eric Sciullo

Senior Toxicologist/Toxic Substances Control

2024 total comp

$154,393

Base pay: $153,893
Overtime: $0
Other pay: $500
Benefits: $0
Total compensation: $154,393
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Sacramento
Middle name: M

Source-specific fields

Base Pay: $13,297
Cs/csu: Cs
Position Number: 8105717943012
Salary Total: $13,696
Total Pay: $154,393

Eric Sciullo works as a Senior Toxicologist for Toxic Substances Control. Their status is full-time. Eric earned $154,393 in 2024. Their bargaining unit is S10.

Nathalie Pham

Senior Toxicologist/Toxic Substances Control

2024 total comp

$150,927

Base pay: $150,652
Overtime: $0
Other pay: $275
Benefits: $0
Total compensation: $150,927
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Sacramento
Middle name: T

Source-specific fields

Base Pay: $12,910
Cs/csu: Cs
Position Number: 8103407943001
Salary Total: $13,297
Total Pay: $150,927

Nathalie Pham works as a Senior Toxicologist for Toxic Substances Control. Their status is full-time. Nathalie earned $150,927 in 2024. Their bargaining unit is S10.