All United Medical Group IPA

All United Medical Group
San Bernardino County

Riverside County

All United Medical Group IPA

Provider Directory:
301 S. La Cadena Dr., Colton, CA 92324
Phone: 1.800.627.8797

Health Plans managed by Innovative Management Systems MSO:

Submit claims to IMS electronically through Office Ally Payer ID: AUMG1 or our Portal

Standard/Routine Authorizations will be processed no later than 14 days.
Expedited/Urgent Authorizations will be processed within 72 hours.


IMS Phone number:


Service Areas:

High Desert

• Apple Valley
• Barstow
• Hesperia
• Victorville
• Adelanto


San Bernardino

• Big Bear Lake
• Chino
• Chino Hills
• Colton
• Crestline
• Fontana
• Grand Terrace
• Highland
• Lake Arrowhead
• Loma Linda
• Montclair
• Ontario
• Pomona
• Rancho Cucamonga
• Rialto
• Running Springs
• San Bernardino
• Upland
• Yucaipa



• Banning
• Beaumont
• Calimesa
• Corona
• Eastvale
• Mira Loma
• Moreno Valley
• Norco
• Riverside
• San Jacinto



• Hemet
• Lake Elsinore
• Menifee
• Murrieta
• Perris
• Sun City
• Temecula
• Wildomar
• Winchester


Coachella Valley

• Coming Soon!

Affirmative Statement

IMS employees who are in the position to review, conduct, or make medical decisions are not influenced by financial incentives, bonuses, or additional compensation relating to the quality of, access to, or utilization of Health Care services rendered to members. Physician reviewers are not rewarded for issuing denials of coverage. All decisions are reviewed using evidence-based guidelines, criteria, and/or the members’ Health Plan/IPA Evidence of Coverage.

To discuss denials, criteria, or to obtain an appeal, please call our Customer Service team at 323-800-8283.

Obtaining Decision Making Criteria

Clinical criteria related to Utilization referral decisions are available to Members, Providers, and the public, and may be requested by contacting the IMS Utilization Management Department, or via fax, portal, or by phone at 323-800-8283.  The criteria will be delivered within one (1) business day of the request.

IPA Attestation