The company circumvents traditional blood testing by obtaining blood samples in "nanotainers" with just a finger prick. Theranos tests the samples with it's proprietary Theranos Edison blood testing device, claiming it can provide results for up to 30 tests in hours.
Theranos is valued at $9 billion, with funding amounting to over $400 million.
The blood-testing company has been operating its Newark, Calif., lab for the past 10 months under the supervision of Sunil Dhawan, a dermatologist without a degree or board certification in pathology or laboratory science.
Dr. Dhawan, 56 years old, meets federal and state requirements to be a lab director because he is a medical doctor and has experience overseeing a lab. Theranos said he has supervised the lab affiliated with his dermatology practice for over 21 years.
However, some lab specialists say there is a difference between the skills required to analyze tissue specimens for signs of skin cancer, for instance, and those necessary to oversee a full reference laboratory, meaning one that performs a wide range of blood tests.
"When you consider the complexities of a reference lab with an expansive test menu, it would be next-to-unheard of to have anything less than a full-time pathologist or laboratory scientist with a Ph.D. as the laboratory director," says Ed Thornborrow, medical director of the clinical labs at the University of California, San Francisco. He said Theranos approached him about the lab-director job it is advertising.
Dr. Dhawan didn't respond to messages left at his dermatology practice in Fremont, Calif., or to an email inquiring about his lab experience.
Heather King, Theranos's general counsel, said "Dr. Dhawan is qualified to be the laboratory director of a high-complexity lab, and has many years of experience in that capacity,"" adding, "His training and expertise is highly relevant to the work that he performs for Theranos."
Dr. Dhawan's credentials as a dermatologist were previously reported by the Financial Times.
The company's Newark lab, then located in Palo Alto, was inspected by the Centers for Medicare and Medicaid Services, laboratories' chief regulator, in 2013, before Dr. Dhawan joined Theranos, according to an inspection report.
The inspectors listed several deficiencies, including results for several blood tests that they termed "unacceptable" and a lack of documented corrective actions on those and other issues. Theranos says that none of the deficiencies were serious, and that it promptly corrected them.
The lab's director at the time had extensive lab training and experience, having completed a three-year residency in clinical pathology at a Boston hospital and five years as director of a Pittsburgh lab. He left Theranos in December 2014, at which point Dr. Dhawan took over.
In recent weeks, Theranos has advertised the Newark lab-director position on its website and has approached directors of other labs in California to gauge their interest, according to people familiar with the matter and emails from Theranos recruiters reviewed by the Journal.
The first qualification Theranos lists on its website for the Newark lab-director job is "M.D. degree with Board Certification in Pathology."
On its site, Theranos has also posted three other senior positions at the Newark lab: lab manager; manager of quality assurance and quality control; and laboratory general supervisor. Lab experts say the four posts typically are a lab's senior leaders.
Ms. King, Theranos's general counsel, said: "We are a growing company and, simply because we have job openings posted or are interviewing people for those roles, does not mean that the laboratory does not already have such personnel; laboratories commonly have multiple people on staff serving with the same titles."
A Theranos lab employee who recently left the company says Dr. Dhawan didn't have a presence at the Newark lab.
Theranos's Ms. King, said that information was "at a minimum, misleading."
Theranos recently stopped drawing tiny blood samples from patients' fingers for all but one of its blood tests after the Food and Drug Administration inspected its facilities and deemed the miniature vials it used to collect the blood an "uncleared medical device." Theranos said the move was voluntary.