Keiko Fujimoto is publicly identified as a Japanese artist and the former wife of Ramesh “Sunny” Balwani. Reliable information about her own life is limited. Much of what appears online comes from biography sites that do not show where their personal details came from.
That matters because the name Keiko Fujimoto belongs to several people. A careful profile must separate Balwani’s former wife from a Japanese DanceSport athlete. It must also separate her from an obituary subject and an actress with the same name.
Who is Keiko Fujimoto?
The Keiko Fujimoto connected to Balwani was his wife before his later public role at Theranos. The Independent identifies her as a Japanese artist. It says Balwani divorced her in December 2002.
The Information provides the clearest financial and location detail about the marriage. It reports that the couple lived in San Francisco. The divorce involved proceeds from a family home and shared investment assets.
Those sources establish the basic story. They do not provide the kind of full personal biography that many searchers expect.

What is documented about her marriage to Ramesh Balwani?
Life in San Francisco before the divorce
Balwani and Fujimoto lived in San Francisco during their marriage. The Information reports that the couple sold a home near the city’s Marina District as part of the divorce process.
The same report says Fujimoto received half of an investment account valued at about $7 million. It also reports a share of Balwani’s Microsoft 401(k). Those figures describe the division of marital assets at that time. They do not reveal Fujimoto’s current wealth.
The marriage ended in 2002
The strongest mainstream sources place the divorce in December 2002. The exact wedding date is less firmly documented. It is safer not to assign a specific year without stronger evidence.
This timing is important to understanding her place in Balwani’s biography. His later relationship with Elizabeth Holmes and his role at Theranos belong to a different chapter. Fujimoto’s documented connection is the earlier marriage.
Why online biographies disagree about Keiko Fujimoto
The birth-date problem
One supplied competitor, Famous Birthdays, gives a June 23, 1977 birth date. It also lists San Francisco as the birthplace. Those details are not independently confirmed by the stronger sources reviewed for this article.
The public record is thin. An exact birth date should not become “verified” simply because several biography pages copy it. The same caution applies to age and height claims. It also applies to nationality labels and other “quick facts” that lack solid sourcing.
The same-name problem
The name is not unique. The the World DanceSport Federation has a separate Keiko Fujimoto from Japan. Its profile lists her as an adult athlete who competed in Standard events and later became inactive.
The supplied Dignity Memorial obituary is for another Keiko Fujimoto. That woman was born in 1934 and died in 2018. It clearly belongs to a different person.
There is also a Keiko Fujimoto actress record on IMDb. It lists credits connected to Unfair, P.O.V., and Yôi Don!. The record does not prove that this actress is Balwani’s former wife. Until an authoritative source connects the identities, they should remain separate.

What is not publicly verified?
A responsible biography should leave several boxes blank rather than guess.
No strong source reviewed here confirms Fujimoto’s university education or a long-term corporate career. Her current employer, home, remarriage, children, and official social-media presence also remain unconfirmed. Some low-authority sites publish these details, but repetition is not verification.
Her personal net worth is also not publicly established. The reported division of marital assets in 2002 cannot be converted into a present-day net-worth figure. Current assets, debts, income, taxes, and investments are unknown.
Was Keiko Fujimoto involved with Theranos?
No reliable source reviewed here shows that Fujimoto worked for Theranos. The evidence does not establish an operational role for her. Her public connection to that story comes through Balwani, her former husband.
That distinction is important. Balwani later became a senior Theranos executive and was prosecuted over the company’s fraud. Those events do not turn Fujimoto into a participant in the case.
For general background, readers can consult Sunny Balwani’s Wikipedia biography. That background is not evidence for private details about Fujimoto.
What can readers safely conclude?
The most defensible summary is simple. Keiko Fujimoto was a Japanese artist who married Ramesh “Sunny” Balwani. They lived in San Francisco and divorced in December 2002. Reliable information about her later life is scarce.
That limited record is not a reason to fill the gaps with invented certainty. That is the key point when readers evaluate online biographies. Many attach precise but weakly sourced details to her name.
Frequently asked questions
Who is Keiko Fujimoto?
Keiko Fujimoto is publicly identified as a Japanese artist and the former wife of Ramesh “Sunny” Balwani. He later became a Theranos executive.
Was Keiko Fujimoto married to Sunny Balwani?
Yes. Reputable reporting identifies Fujimoto as Balwani’s former wife. Their marriage ended in 2002.
When did Keiko Fujimoto and Sunny Balwani divorce?
The strongest sources reviewed place the divorce in December 2002.
Was Keiko Fujimoto an artist?
Yes. The Independent describes Balwani’s former wife, Keiko Fujimoto, as a Japanese artist.
Did Keiko Fujimoto work at Theranos?
No reliable evidence reviewed here shows that she worked for Theranos. Her connection to the company is through her former husband.
How old is Keiko Fujimoto?
Her exact age is not reliably established. Some biography sites publish a birth date, but the stronger sources reviewed here do not independently confirm it.
Where does Keiko Fujimoto live now?
Her current residence is not reliably documented in the sources reviewed. Privacy-sensitive location claims should not be inferred from people-search databases.
Does Keiko Fujimoto have children?
No strong source reviewed here confirms whether she has children. Claims that state a definite number should therefore be treated cautiously.
What is Keiko Fujimoto’s net worth?
Her current personal net worth is not publicly verified. Historical marital-asset figures do not reliably show her current net worth.
Methodology: This article uses reputable reporting and public records where available. It also uses established databases for identity checking. Financial figures are not presented as personal net worth without reliable disclosure.
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