September 30, 2019 and increased general medical visits resulting in increased provider fees, and physician network operation center costs.
Advertising and Marketing Expenses. Advertising and marketing expenses were $31.3 million for the quarter ended September 30, 2019 compared to $21.7 million for the quarter ended September 30, 2018, an increase of $9.6 million, or 45%. This increase primarily consisted of increased digital advertising, member engagement and acquisition initiatives, sponsorship of professional organizations and trade shows of $8.0 million and increases in employee-related expenses and others of $1.6 million. Advertising and marketing expenses were $84.3 million for the nine months ended September 30, 2019 compared to $61.6 million for the nine months ended September 30, 2018, an increase of $22.7 million, or 37%. Including the impact from Advance Medical, this increase primarily consisted of increased digital advertising, member engagement and acquisition initiatives, sponsorship of professional organizations and trade shows of $18.0 million and increases in employee-related expenses and others of $4.7 million.
Sales Expenses. Sales expenses were $16.1 million for the quarter ended September 30, 2019 compared to $16.3 million for the quarter ended September 30, 2018, a decrease of $0.2 million, or 1%. This decrease primarily consisted of increased staffing and sales commissions of $0.2 million and a decrease to other sales expenses of $0.4 million. Sales expenses were $48.1 million for the nine months ended September 30, 2019 compared to $44.6 million for the nine months ended September 30, 2018, an increase of $3.5 million, or 8%. Including the impact from Advance Medical, this increase primarily consisted of increased staffing and sales commissions of $3.2 million and an increase to other sales expenses of $0.3 million.
Technology and Development Expenses. Technology and development expenses were $15.7 million for the quarter ended September 30, 2019 compared to $13.6 million for the quarter ended September 30, 2018, an increase of $2.1 million, or 16%. This increase resulted primarily from hiring additional personnel totaling $1.5 million and other expenses of $0.6 million. Technology and development expenses were $48.4 million for the nine months ended September 30, 2019 compared to $40.8 million for the nine months ended September 30, 2018, an increase of $7.6 million, or 19%. This increase resulted primarily from hiring additional personnel totaling $5.8 million and other expenses of $1.7 million.
Legal and Regulatory Expenses. Legal and regulatory expenses were $1.6 million for the quarter ended September 30, 2019 compared to $0.8 million for the quarter ended September 30, 2018, an increase of $0.8 million, or 102%. Legal and regulatory expenses were $5.2 million for the nine months ended September 30, 2019 compared to $2.5 million for the nine months ended September 30, 2018, an increase of $2.7 million, or 110%. The increase in 2019 in both periods resulted primarily from increased expenses to support litigation activities.
Acquisition and Integration Related Costs. Acquisition and integration related costs, incurred primarily in connection with the Advance Medical and Best Doctors integrations, were $2.0 million for the quarter ended September 30, 2019 compared to $1.6 million for the quarter ended September 30, 2018, an increase of $0.4 million, which primarily represents the costs associated with the acquisition and integration of Advance Medical. Acquisition and integration related costs, incurred primarily in connection with the Advance Medical and Best Doctors integrations, were $4.1 million for the nine months ended September 30, 2019 compared to $9.0 million for the nine months ended September 30, 2018, a decrease of $4.9 million, which primarily represents the costs associated with the abandonment of the corporate office lease of Best Doctors and costs associated with the acquisition of Advance Medical.
General and Administrative Expenses. General and administrative expenses were $38.9 million for the quarter ended September 30, 2019 compared to $30.3 million for the quarter ended September 30, 2018, an increase of $8.6 million, or 28%. This increase was driven primarily by an increase in employee-related expenses of approximately $9.7 million resulting from growth in total employee headcount to 2,386 at September 30, 2019 as compared to 2,032 employees at September 30, 2018 primarily from the impact of the Advance Medical acquisitions. Other expenses, which include office-related charges, professional fees and bank charges, decreased by $1.1 million for the quarter ended September 30, 2019 as compared to September 30, 2018. General and administrative expenses were $113.4 million for the nine months ended September 30, 2019 compared to $80.5 million for the nine months ended September 30, 2018, an increase of $32.9 million, or 41%. This increase was driven primarily by an increase in employee-related expenses of approximately $27.1 million resulting from growth in total employee headcount to 2,386 at September 30, 2019 as compared to 2,032 employees at September 30, 2018 primarily from the impact of the Advance Medical acquisitions. Other expenses, which include office-related charges, professional fees and bank charges, increased by $5.8 million for the nine months ended June 30, 2019 as compared to September 30, 2018, to support the growth of our business.