Jay Rosenzweig
Jay Rosenzweig l Adoption Investigator & Family Reunification Expert
BirthParentFinder.com
Founder/CEO
(818)704-9925
Currently accepting clients for...
- DNA
- Family History Research
Family History Research
- DNA
- Family History Research
DNA
- Adoption / Unknown Parentage
- Investigative Genetic Genealogy
Speaking/Presenting
- DNA
- Available for in-person events
Writing/Publishing
- Author/Writer
Other Speciality
- Heir & Probate Search
Jay Rosenzweig is a prominent California-based private investigator and the founder of BirthParentFinder.com, specializing in using DNA technology and genetic genealogy to reunite adoptees with their biological families.
DNA Investigative Work
Rosenzweig's work centers on leveraging modern DNA databases to solve complex kinship cases.
In May 2024, Rosenzweig launched the Finding Family DNA podcast. The show explores the emotional journeys of adoptees and the scientific processes behind their reunions.
DNA Investigative Work
Rosenzweig's work centers on leveraging modern DNA databases to solve complex kinship cases.
- Methodology: He uses tools like AncestryDNA, 23andMe, and GEDmatch to find biological relatives for clients who may have little to no information about their origins.
- Experience: With over 40 years of investigative experience, he was named "Investigator of the Year" in 1995 and received the Distinguished Achievement Award from the California Association of Licensed Investigators (CALI) in 2021.
- Media Presence: He frequently appears on local and national news, such as KTLA, to showcase heartwarming family reunions facilitated by DNA testing.
In May 2024, Rosenzweig launched the Finding Family DNA podcast. The show explores the emotional journeys of adoptees and the scientific processes behind their reunions.
Testimonials
Jay is not only capable, thorough and professional, he's also discreet, congenial, and a pleasure to speak with. Jay was able to turn around a very difficult locate on my biological father (whom I've never met), with incredibly scarce and unreliable information to go on, in a mere 2 days. To complicate matters, this was in the midst of the hurricane-torn Gulf with phone lines down, days after Katrina ravaged the region-- Jay was still able to follow through and make a contact. Turns out, my dad was on the other side of the world at the time, and Jay was able to track him down in the Mediterranean, where only a day before there were questions as to whether he was even alive. It's a truly amazing story.
I had tried over the course of a decade to hire investigators, all of whom were unable or unwilling to pursue the case, lacking much information as I did. Jay's candor and competence cut through all the nonsense I had come to expect, and now I and my father are in contact thanks to Jay's incredible investigative skills. I would (and do) recommend Mr. Rosenzweig's services without reservation: Jay wins my Investigator of the Century Award."
Joshua R - Long Beach, CA
"My half-sister and I had lost touch with each other several years ago, and the last time I checked she had moved with no known address, and nobody knew where she went. The last time I knew, she had lived in California. I live outside the state of California, making it difficult to check on possible ideas, so I hired J R Investigations to help me locate my sister. Within one day of receiving my cleared check, J R Investigations gave me an address, an address out of state. In fact, it was in my own state, and I could hardly believe it. I was so surprised with the information, that I actually questioned the agency about the validity of the address. Jay assured me the information was the most accurate he could deliver. My husband and I traveled the next day to the city in our state Jay said she was living, found the address, and sure enough, she and her husband were living there. We visited for several hours into the wee hours of the morning, exchanged phone numbers, e-mail, addresses and vowed to not lose touch again. I would highly recommend J R Investigations to anyone who might be trying to locate their relatives."
Elizabeth T. - Walla Walla, Washington
Jay is not only capable, thorough and professional, he's also discreet, congenial, and a pleasure to speak with. Jay was able to turn around a very difficult locate on my biological father (whom I've never met), with incredibly scarce and unreliable information to go on, in a mere 2 days. To complicate matters, this was in the midst of the hurricane-torn Gulf with phone lines down, days after Katrina ravaged the region-- Jay was still able to follow through and make a contact. Turns out, my dad was on the other side of the world at the time, and Jay was able to track him down in the Mediterranean, where only a day before there were questions as to whether he was even alive. It's a truly amazing story.
I had tried over the course of a decade to hire investigators, all of whom were unable or unwilling to pursue the case, lacking much information as I did. Jay's candor and competence cut through all the nonsense I had come to expect, and now I and my father are in contact thanks to Jay's incredible investigative skills. I would (and do) recommend Mr. Rosenzweig's services without reservation: Jay wins my Investigator of the Century Award."
Joshua R - Long Beach, CA
"My half-sister and I had lost touch with each other several years ago, and the last time I checked she had moved with no known address, and nobody knew where she went. The last time I knew, she had lived in California. I live outside the state of California, making it difficult to check on possible ideas, so I hired J R Investigations to help me locate my sister. Within one day of receiving my cleared check, J R Investigations gave me an address, an address out of state. In fact, it was in my own state, and I could hardly believe it. I was so surprised with the information, that I actually questioned the agency about the validity of the address. Jay assured me the information was the most accurate he could deliver. My husband and I traveled the next day to the city in our state Jay said she was living, found the address, and sure enough, she and her husband were living there. We visited for several hours into the wee hours of the morning, exchanged phone numbers, e-mail, addresses and vowed to not lose touch again. I would highly recommend J R Investigations to anyone who might be trying to locate their relatives."
Elizabeth T. - Walla Walla, Washington
Publications/Media
https://www.birthparentfinder.com/post/a-little-story-about-my-job-that-reveals-it-s-not-just-about-locating-people https://www.birthparentfinder.com/post/how-to-find-your-birth-parents-without-taking-a-dna-test
https://www.birthparentfinder.com/post/a-little-story-about-my-job-that-reveals-it-s-not-just-about-locating-people https://www.birthparentfinder.com/post/how-to-find-your-birth-parents-without-taking-a-dna-test
Research Time Periods
- 21st Century
- 20th Century
Certificates
Certified Professional Investigator
Certified Professional Investigator
Affiliations
California Association of Licensed Investigators, Association of Professional Genealogists, World Association of Detectives
California Association of Licensed Investigators, Association of Professional Genealogists, World Association of Detectives