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Main Offices

OneNet PPO
800 King Farm Boulevard, 6th Floor
Rockville, Maryland 20850
Tel: 1-800-884-5188
Fax: 1-866-563-6609




for general purpose inquiries

Business Hours

Our office hours are Monday through Friday, 8:30 a.m. to 5:30 p.m. Eastern Standard Time.

OneNet Member Services representatives and Professional Services representatives are available Monday through Friday from 8:00 AM to 8:00 PM Eastern Standard Time.

All offices and departments are closed on the following holidays: New Years Day*, Martin Luther King, Jr. Day, Memorial Day, Independence Day*, Labor Day, Thanksgiving and the day after Thanksgiving, Christmas Day*.

*When occurring on a Saturday or Sunday, these holidays are observed on the preceding Friday or subsequent Monday.


Telephone Numbers

OneNet Member Services 1-800-342-3289
OneNet Professional Services (Providers) 1-800-342-3289
OneNet Utilization Management 1-800-962-0643
MAPSI Behavioral Health Utilization Management 1-800-282-6565
 
OneNet Account Management, Sales and Accounting 1-800-884-5188

OneNet PPO & MAPSI Behavioral Health Claims Address

P.O. Box 934
Frederick, Maryland 21705


Reminder: Providers should submit all workers compensation claims directly to the patient’s employer, workers compensation administrator or workers compensation insurance carrier. The employer, workers compensation administrator or workers compensation insurance carrier will send the claim to OneNet.


Access Fee Payment Address

OneNet PPO, LLC
P.O. Box 752232
Baltimore, Maryland 21275