Search our Expert Directory

Vertex has experience working on construction projects, small and large, all over the world. We are experts in quantum and forensic critical path method schedule analysis. Our team’s expertise includes change order development, review and analysis of cost overruns, forensic schedule analysis, delay and disruption quantification, productivity analyses, acceleration and mitigation impact evaluation, cumulative impact quantification, forensic accounting, and expert witness testimony.

Vertex experts focus on economic issues related to insurance disputes. For policyholders we assist our clients by tracking and recording costs associated with remedying a loss, reviewing and preparing claim packages for submission to the insurance company, and assisting with the quantification of business interruption and lost profits claims, environmental claims, and construction disputes, among others. Additionally, we have assisted insurance companies defend or rebut business interruption claims and lost profits claims, class actions, construction disputes, environmental claims, reinsurance, and other disputes.

Vocational Diagnostics, Inc. (VDI) has garnered a reputation as the leader in damages assessment nationwide. For over 40 years, we have provided professional consulting and expert witness services to the legal and insurance communities throughout the United States and Canada. We are retained to serve as life care planning and vocational experts / consultants in a variety of plaintiff and defense cases including, but not limited to, personal injury, medical negligence/malpractice, pediatric, birth injury, toxic torts, environmental injury, product liability, labor and employment, and family law/domestic relations.

Vocational Diagnostics, Inc. (VDI) has garnered a reputation as the leader in damages assessment nationwide. For over 40 years, we have provided professional consulting and expert witness services to the legal and insurance communities throughout the United States and Canada. We are retained to serve as life care planning and vocational experts / consultants in a variety of plaintiff and defense cases including, but not limited to, personal injury, medical negligence/malpractice, pediatric, birth injury, toxic torts, environmental injury, product liability, labor and employment, and family law/domestic relations.

50+ years of construction experience: commercial, residential, industrial, and public projects. Construction disputes, accident investigations, and exposure analysis. Review of standard of care: construction in place, job site injury, premises liability, constructability, OSHA, ADA, building codes, industry standards, and manufacturer’s recommendations. Root cause failure analysis, repair recommendations, and cost of repair. Claims regarding contracts, scheduling, delay, costs, and standard of care. Extensive experience in waterproofing, roofing, building envelope, OSHA compliance, and civil engineering. Expert consulting; expert witness testimony and production of written opinions in thousands of matters.

50+ years of construction experience: commercial, residential, industrial, and public projects. Construction disputes, accident investigations, and exposure analysis. Review of standard of care: construction in place, job site injury, premises liability, constructability, OSHA, ADA, building codes, industry standards, and manufacturer’s recommendations. Root cause failure analysis, repair recommendations, and cost of repair. Claims regarding contracts, scheduling, delay, costs, and standard of care. Extensive experience in waterproofing, roofing, building envelope, OSHA compliance, and civil engineering. Expert consulting; expert witness testimony and production of written opinions in thousands of matters.

50+ years of construction experience: commercial, residential, industrial, and public projects. Construction disputes, accident investigations, and exposure analysis. Review of standard of care: construction in place, job site injury, premises liability, constructability, OSHA, ADA, building codes, industry standards, and manufacturer’s recommendations. Root cause failure analysis, repair recommendations, and cost of repair. Claims regarding contracts, scheduling, delay, costs, and standard of care. Extensive experience in waterproofing, roofing, building envelope, OSHA compliance, and civil engineering. Expert consulting; expert witness testimony and production of written opinions in thousands of matters.

50+ years of construction experience: commercial, residential, industrial, and public projects. Construction disputes, accident investigations, and exposure analysis. Review of standard of care: construction in place, job site injury, premises liability, constructability, OSHA, ADA, building codes, industry standards, and manufacturer’s recommendations. Root cause failure analysis, repair recommendations, and cost of repair. Claims regarding contracts, scheduling, delay, costs, and standard of care. Extensive experience in waterproofing, roofing, building envelope, OSHA compliance, and civil engineering. Expert consulting; expert witness testimony and production of written opinions in thousands of matters.

50+ years of construction experience: commercial, residential, industrial, and public projects. Construction disputes, accident investigations, and exposure analysis. Review of standard of care: construction in place, job site injury, premises liability, constructability, OSHA, ADA, building codes, industry standards, and manufacturer’s recommendations. Root cause failure analysis, repair recommendations, and cost of repair. Claims regarding contracts, scheduling, delay, costs, and standard of care. Extensive experience in waterproofing, roofing, building envelope, OSHA compliance, and civil engineering. Expert consulting; expert witness testimony and production of written opinions in thousands of matters.

50+ years of construction experience: commercial, residential, industrial, and public projects. Construction disputes, accident investigations, and exposure analysis. Review of standard of care: construction in place, job site injury, premises liability, constructability, OSHA, ADA, building codes, industry standards, and manufacturer’s recommendations. Root cause failure analysis, repair recommendations, and cost of repair. Claims regarding contracts, scheduling, delay, costs, and standard of care. Extensive experience in waterproofing, roofing, building envelope, OSHA compliance, and civil engineering. Expert consulting; expert witness testimony and production of written opinions in thousands of matters.

Board Certified in Ophthalmology, Fellowship Trained in Eyelid Plastic Reconstructive Surgery. 40 years patient care experience in glaucoma, cataract evaluation, retinal disease, general eye care and eyelid plastic and corrective surgery. Experience in medical file review/opinion, deposition and trial testimony for plaintiff and defense. Authored medical articles for prestigious journals. Northwestern University trained.

Board Certified in Ophthalmology, Fellowship Trained in Eyelid Plastic Reconstructive Surgery. 40 years patient care experience in glaucoma, cataract evaluation, retinal disease, general eye care and eyelid plastic and corrective surgery. Experience in medical file review/opinion, deposition and trial testimony for plaintiff and defense. Authored medical articles for prestigious journals. Northwestern University trained.

Fellowship Trained in Eyelid Plastic and Reconstructive Surgery. Board Certified in Ophthalmology. 40 years clinical/surgical experience. Over 20,000 eyelid procedures performed including: Blepharoplasty, ptosis, entropion, and ectropion repair, tear duct surgery and eyelid lesion and cancer removal. Experience in medical file review/opinion, deposition and trial testimony for plaintiff or defense. Authored medical articles for prestigious journals. Northwestern University trained.

Cantor Forensic & Divorce Accounting, PLLC provides forensic accounting services for Family Law and Civil Litigation matters. Services include Business Valuations, Income Calculations, Separate Property Tracing, Community Waste, Standard of Living Analyses and deposition/trial support. David Cantor has 30+ years of experience and testified in 275+ expert witness cases. Martin Hellmer, CPA, former FBI Special Agent, brings 20+ years of investigative accounting, fraud analysis, and civil litigation support.

Consolidated Consultants Co. (CCc) at FreeReferral.com continues to deliver high quality expert witness and medical expert witness referrals nationwide since 1995. CCc is the only referral service where you can view the full, redacted CV on-line prior to contacting us. Our directory has over 30,000 witness categories including all financial, personal injury, wrongful death and criminal defense expert witness fields, including assault, fire service, engineers, medical and malpractice experts and the list continues to expand. CCc specializes in locating that hard-to-find professional witness promptly and effectively. There is no charge for our service as both the expert witness and medical expert witness pay our fee. Call or email us for an immediate response.

Consolidated Consultants Co. (CCc) at FreeReferral.com continues to deliver high quality expert witness and medical expert witness referrals nationwide since 1995. CCc is the only referral service where you can view the full, redacted CV on-line prior to contacting us. Our directory has over 30,000 witness categories including all financial, personal injury, wrongful death and criminal defense expert witness fields, including assault, fire service, engineers, medical and malpractice experts and the list continues to expand. CCc specializes in locating that hard-to-find professional witness promptly and effectively. There is no charge for our service as both the expert witness and medical expert witness pay our fee. Call or email us for an immediate response.

Consolidated Consultants Co. (CCc) at FreeReferral.com continues to deliver high quality expert witness and medical expert witness referrals nationwide since 1995. CCc is the only referral service where you can view the full, redacted CV on-line prior to contacting us. Our directory has over 30,000 witness categories including all financial, personal injury, wrongful death and criminal defense expert witness fields, including assault, fire service, engineers, medical and malpractice experts and the list continues to expand. CCc specializes in locating that hard-to-find professional witness promptly and effectively. There is no charge for our service as both the expert witness and medical expert witness pay our fee. Call or email us for an immediate response.

John Kirby has been involved in a variety of cases including bankruptcy, civil disputes, divorce, arbitrations, lease and sale negotiations, and other land, development, and real estate litigation. He has served as a qualified expert witness in both State (AZ and CA) and Federal Courts. In addition, Mr. Kirby leads a large team of commercial appraisers located throughout the Southwest, including a dedicated Trust & Estates team comprised of in-house entity and partial interest valuation professionals. Mr. Kirby has 20 years of professional appraisal experience covering a diverse range of assignments in terms of both property types and markets, and is supported by the resources of one of the world’s largest real estate services providers.

John Kirby has been involved in a variety of cases including bankruptcy, civil disputes, divorce, arbitrations, lease and sale negotiations, and other land, development, and real estate litigation. He has served as a qualified expert witness in both State (AZ and CA) and Federal Courts. In addition, Mr. Kirby leads a large team of commercial appraisers located throughout the Southwest, including a dedicated Trust & Estates team comprised of in-house entity and partial interest valuation professionals. Mr. Kirby has 20 years of professional appraisal experience covering a diverse range of assignments in terms of both property types and markets, and is supported by the resources of one of the world’s largest real estate services providers.

John Kirby has been involved in a variety of cases including bankruptcy, civil disputes, divorce, arbitrations, lease and sale negotiations, and other land, development, and real estate litigation. He has served as a qualified expert witness in both State (AZ and CA) and Federal Courts. In addition, Mr. Kirby leads a large team of commercial appraisers located throughout the Southwest, including a dedicated Trust & Estates team comprised of in-house entity and partial interest valuation professionals. Mr. Kirby has 20 years of professional appraisal experience covering a diverse range of assignments in terms of both property types and markets, and is supported by the resources of one of the world’s largest real estate services providers.