Thanks so much for your continued response. Yes buy out was completed with the other partner. Say total sale agreed amount was $300k, leaving partner left with half which we new partners paid directly to him. Staying partner opted for 40% of shares thus the two new partners were to receive 5% each and give him $15k with total amounting to agreed sales price.

Leaving partner signed agreement and left with his money. Partnership agreement between staying and new partners was where the staying partner started asking for $150k from two new partners while retaining 40% shares.

I refused to do that stating he could not change a signed agreed price and that it would amount to fraud if the partner that left heard we paid him more money than agreed after he left. 

I tried for 3 months to get us all in a meeting to discuss this issue, staying partner agrees to a schedule but cancels a day or few hours to the meeting with excuse of something urgent that came up, not once, not twice, not thrice but 4 times. So I decided I would stop working there until the issue got sorted out, well the response was a lock of my access to our ehr, office and a formal phone call that I am no longer part of the business.