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Charges: Minnetonka psychologist sexually abused her patient over period of months

The patient was designated as vulnerable.

A Minnetonka-based clinical psychologist reported being sexually assaulted by one of her clients, but was herself arrested after it emerged she had been sexually abusing him for months.

Johanna Lamm, 43, of Plymouth, called police to her clinic at 11812 Wayzata Blvd. on Aug. 5, claiming she'd been assaulted during an appointment, according to details in a criminal complaint. 

As she spoke to officers, she told them it was likely that her patient would tell them they'd been having an affair, which she denied and gave police access to her phone. 

But police found that most of the texts on her phone between the two had been deleted. They then spoke to the patient, who said what had been an intimate relationship with Lamm became sexual in the past 3-4 months.

The alleged victim showed police text messages from Lamm and provided officers with audio recordings.

When officers spoke with Lamm again, she said she didn't want to pursue charges.

But police got warrants to obtain her phones, computers, medical records, appointment histories and payment histories, which confirmed that the pair were having a "consensual sexual relationship."

Lamm eventually admitted this to police, and confirmed she had not been sexually assaulted by the patient.

The victim has been identified by the Minnesota Department of Human Services as a vulnerable adult. Lamm had been his psychologist since 2015, and she was charging him $200 a session.

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She has been charged with 3rd-degree criminal sexual conduct by a psychotherapist during a session, which is a felony carrying a maximum 15-year sentence.

Citing a search warrant affidavit, the Star Tribune reports the alleged victim is diagnosed bipolar, has been suicidal and is possibly schizophrenic.

Lamm's website states she works with patients struggling from conditions including bipolar disorder, addiction, schizophrenia, sexual abuse and PTSD.

She is a psychology and criminal justice graduate from Hamline University, and got her doctoral degree in clinical psychology from the Minnesota School of Professional Psychology.

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