OPINION

REPPY, J.

By grand jury indictment defendant-appellant H. Edward Scofield, along with Dr. Everett W. DeLong (Dr. DeLong) and Freda Mae Nelson (Nelson), was charged with presenting a fraudulent insurance claim to the Aetna Casualty and Surety Company (Aetna) on or about June 1, 1962, in violation of Insurance Code section 556, subdivision (a). After a jury waiver (a subject of contention on appeal) the matter was submitted on the transcripts of the preliminary hearing and of the grand jury indictment proceedings. Defendant was found guilty of attempt of violation of section 556, subdivision (a) of the Insurance Code, a lesser and necessarily included offense and sentenced to 90 days in the county jail.

The trial court stated that it had examined grand jury exhibit No. 20 and had read the testimony of Harold E. Crozier, Jr., (Crozier), Dean C. Dunleavy (Dunleavy), Claris Von Berg (Von Berg), Ann Moran (Moran), and Mary DuBois (DuBois). Exhibit 20 consists of several bills for treatment rendered to Nelson. Two are from Doctors Hall and Matzen for radiology. One (hereinafter referred to as the May 18 bill) is addressed to defendant and consists of six pages. The first three pages, signed by Dr. DeLong and dated May 15, 1962, are Nelson's medical history, diagnosis, and prognosis. The remaining three pages, dated May 18, 1962, are itemized statements setting forth the individual dates of treatments, commencing March 21, 1960, and ending May 8, 1962, the type of treatments, and the charges for the treatments, totalling $1,759.

The following is a summary of the testimony of each of the witnesses referred to by the trial court: Crozier: As claims representative for Aetna, he investigated a claim filed personally by Nelson arising out of a March 16, 1960, auto accident. A suit for damages on the claim and for lulling Nelson into a false sense of security in letting the statute of limitations run was brought against Aetna and Crozier, with defendant acting as Nelson's attorney. Crozier received from Aetna's attorney, Dunleavy, letters written by defendant representing that he on behalf of Nelson, was making a claim of $6,000 and the medical bills (in Exhibit 20) which had been submitted in support of this claim. Dunleavy's letter transmitting the bills was dated June 15, 1962, and indicated that he had received them a "few days [previously] from plaintiff's counsel."

Dunleavy: He negotiated Nelson's claim against Aetna with defendant, her attorney. On June 1, 1962, defendant sent him the May 18 bill in support of that claim. On August 20, 1962, Dunleavy took Nelson's deposition, with defendant present at defendant's elaborate home in Beverly Hills. He had a lengthy discussion with defendant on Nelson's treatments, almost entirely physiotherapy, which defendant told him had been given by Dr. DeLong.

Von Berg: She was employed by Dr. DeLong as a medical assistant and office worker who handled the office overload of medical insurance from June until the second week in November 1961. Defendant came to the office many times, once or twice as a patient, and otherwise on personal business calls. Dr. DeLong instructed her that defendant's clients were to be billed for treatments three times a week regardless of whether actual treatment had been given. She was to check with defendant concerning the duration of the treatments to be put on the billing and how much the final settlement should be. She would call defendant's office and receive his instructions although she did not talk to him personally. She gave Nelson injections, at the most, twice a week. Although it was her duty to render physiotherapy treatments and she would have known about any such treatments, she did not render any to Nelson. During her period of employment, Nelson did not visit the office as often as, or receive the physiotherapy treatments, reflected in the bill. She overheard conversations of defendant and Dr. DeLong regarding certain patients, what the insurance settlements should be, when the cases should be terminated, and when they should be submitted. Defendant would receive copies of bills for his clients.

Moran: She was employed by Dr. DeLong from June 1961 to January 2, 1962, as a technician and general office worker. She gave physiotherapy only once or twice. She was instructed by Dr. DeLong and defendant she should bill defendant's clients as if they had received treatment times a week (some treatments, taken from the patient's chart, were others were filled in by the use of the calendar), and that she call defendant to find out the amount of the bill. After making the she would fill in the "phony" treatments on the patients records. She took some of the bills to defendant's home personally. She gave Nelson perhaps one shot and no physiotherapy treatments. During her employment, Nelson did not come to the office for treatment as frequently as the May 18 bill indicated. Nelson came to the office in reference to insurance and called often wanting to know why the insurance papers were not sent through. Moran prepared one bill for Nelson, but not the May 18 bill. Moran left the office when narcotics agents and the FBI started investigating and questioning the personnel.

DuBois: She worked for Dr. DeLong, replacing Von Berg, from October 1961 through November 1962, as a medical assistant and as compiler of insurance forms and personal injury reports. The cases of defendant's personal injury clients were not put in the regular bookkeeping system; these patients had separate cards. She prepared bills for defendant's clients showing treatments, which were not in fact true reflections of what patient records showed, according to telephoned instructions from defendant. Dr. DeLong told her that it was the office's policy to submit fraudulent bills to insurance companies, that it would submit a bill for at least $300 for $100 worth of treatment, and that defendant, the patient, and "we" would each get $100. Defendant instructed her to lower the charges made for his clients because insurance companies balked at their size. DuBois treated Nelson occasionally. She prepared the May 18 bill, which reflected physiotherapy treatments and injections which had not been given. Some of the information on that bill was taken from Nelson's patient records and some "from the calendar three times a week." Defendant did not specify any particular amount for this, "but the instructions were to make the bill to begin treatments at the time of the accident up until the last treatment date." On January 12, 1962, while visiting defendant in his home with Levine, DuBois was told by defendant "that if anybody tried to do to him what evidently was trying to be done to D. DeLong, he would be like a rat in the corner, and he would have his back in the corner like a rat, and he would kill the person, whoever it was. At that time defendant pointed his finger at DuBois and said that she was the only one who could implicate him relative to the insurance frauds.

Defendant contends on appeal that he did not give a valid waiver of his right to a jury trial, that the evidence was insufficient to support his conviction, and that witnesses Von Berg Moran, and DuBois were accomplices whose testimony required corroboration to support the conviction.

CONCERNING THE JURY WAIVER

The clerk's minutes recite: "The defendant personally and all counsel

REPPY, J.

be the case absent such participation." (Italics supplied.) ( People v. Belenger, 222 Cal.App.2d 159, 163 [ 34 Cal.Rptr. 918]; see People v. Terry, 2 Cal.3d 362, 401 [ 85 Cal.Rptr. 409, 466 P.2d 961]; People v. Goldstein, supra, 146 Cal.App.2d 268, 272-273; People v. Wood, 56 Cal.App. 431 [ 205 P. 698]; Perkins on Criminal Law (2d ed. 1969) Imputability — Parties to Crime, pp. 662-663.)

(7b) It is apparent from DuBois' testimony that she prepared the May 18 bill knowing it would be submitted in support of a fraudulent insurance claim. In so doing she aided and abetted defendant in his June 1 submission of the bill in support of the fraudulent claim. (Accord: People v. Zelver, 135 Cal.App.2d 226, 232 [ 287 P.2d 183].) DuBois, therefore, was an accomplice.

It is also apparent from the testimony of Von Berg and Moran that they prepared bills with guilty knowledge of their fraudulent nature and purpose. However, there is no indication in the record that they aided and abetted the particular offense under consideration. (See Pen. Code, § 1111; People v. Owens, 28 Cal.2d 191, 193 [ 168 P.2d 945] and People v. Robinson, 184 Cal.App.2d 69, 77 [ 7 Cal.Rptr. 202] [holding that testimony of a witness who was an accomplice to one offense charged against the defendant can corroborate the testimony of an accomplice to another offense charged against the defendant]; see also People v. Gallardo, 41 Cal.2d 57, 63 [ 257 P.2d 29].) The offense of which defendant was convicted involved his presentation on June 1 of the May 18, 1962, bill in support of the $6,000 demand. In view of DuBois' testimony that she prepared the bill, Von Berg's testimony that she ceased working for DeLong in November 1961, and Moran's testimony that she ceased working for him in January 1962, it is apparent that Von Berg and Moran had nothing to do with the preparation of this bill. (See People v. Graham, 191 Cal.App.2d 521, 538 [ 12 Cal.Rptr. 893].) They, therefore, were not accomplices.

(12) The fraudulent aspect of the May 18 bill was part of the corpus delicti, and this could properly be established by the testimony of DuBois alone since an accomplice's testimony as to the corpus delicti need not be corroborated. ( People v. Simpson, 43 Cal.2d 553, 563 [ 275 P.2d 31]; People v. Neely, 163 Cal.App.2d 289, 301 [ 329 P.2d 357].) (7c) In fact, however, it was corroborated by Von Berg's and Moran's testimony to the effect that Nelson had not received the treatments reflected in the bill during their employment. (13) Only defendant's connection with the crime need be corroborated, and the question for the trier of fact is to determine whether there was any substantial corroborative evidence. ( People v. Malone, 82 Cal.App.2d 54, 60 [ 185 P.2d 870].) (14) "Although the corroborating evidence must raise more than a conjecture or suspicion of guilt, it is sufficient if it connect the defendant with the commission of the crime in such a way as reasonably to satisfy the fact finding body that the accomplice is telling the truth. [Citation.] The evidence of inculpatory participation need not be direct nor extend to every fact and detail. It may be circumstantial and is sufficient, even though slight, if it tends to connect the defendant with the commission of the crime." ( People v. Henderson, 34 Cal.2d 340, 342-343 [ 209 P.2d 785].) (7d) Defendant's submission of the bill was established, not by DuBois, but by Aetna's claims representative, Crozier, and the attorney, Dunleavy. DuBois' testimony as to the existence of the practice of making fraudulent bills and as to defendant's knowledge of and participation in that practice at the time this bill was made demonstrated defendant's guilty knowledge and intent. This testimony was corroborated by the very similar testimony of Von Berg and Moran as to defendant's connection with their billing practices when they were employed by Dr. DeLong.

The judgment is affirmed.

Stephens, Acting P.J., and Aiso, J., concurred.

A petition for a rehearing was denied June 25, 1971, and appellant's petition for a hearing by the Supreme Court was denied July 21, 1971. Wright, C.J., did not participate therein.