The California State Medical Board has formally subpoenaed Michael Jackson's former physician and long time friend, Dr. Arnold Klein to appear at a hearing on December 15, RadarOnline.com is exclusively reporting.

Dr. Klein's lawyer, Herbert Weinberg, advised the dermatologist on November 30, via letter, that he would no longer be representing him for the California Medical Board proceedings.

The letter states: "Please be advised that our company is withdrawing as your counsel. We urge you to obtain counsel as soon as possible, as you have been subpoenaed to appear before the Medical Board on December 15, 2011. Failure to appear may result in the Medical Board petitioning the administrative courts for suspension of your license to practice."

The doctor who is under fire from the California State Medical Board for “gross negligence” in the fertility treatment of Nadya Suleman will keep his license for at least a few more weeks RadarOnline.com has learned.

The Medical Board met in January in a closed-door session and revealed Wednesday that they rejected the recommendation that Dr. Michael Kamrava be placed on probation. 

DOCUMENTS: Court Delays Octo-Mom Doc Medical License Decision

A hearing was held in 2010 to determine if Dr. Kamrava should keep his medical license in California after he was investigated for the in-vitro fertilization treatments he gave Nadya Suleman, AKA Octo-Mom, that resulted in her giving birth to eight babies on January 26, 2009.

It's judgment day for the Beverly Hills fertility specialist who implanted a dozen embryos in Nadya Suleman -- a controversial move that resulted in her giving birth to octuplets in January, 2009.

On Thursday, January 27, the California Medical Board is meeting to review a recommendation by Administrative Judge Daniel Juarez that Dr. Michael Kamrava be placed on five years probation by the board.

PHOTOS: Nadya Suleman Takes All 14 Kids To The Beach

The doctor who performed the in-vitro fertilization that resulted in Nadya Suleman’s octuplets will learn whether he is allowed to continue practicing medicine on January 27, RadarOnline.com has exclusively learned.

Dr. Michael Kamrava, a Beverly Hills fertility specialist, has been accused by the California Medical Board of “gross negligence” in his handling of Octo-Mom Nadya Suleman’s reproductive treatment.

PHOTOS: Octo-Mom Takes All 14 Kids To The Beach

The board will decide if Dr. Kamrava will have his license suspended or revoked.

As RadarOnline.com previously reported, Administrative Law Judge Daniel Juarez submitted his recommendation to the Medical Board in December after a hearing focusing on Dr. Kamrava’s alleged misconduct.