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Gateway Medical Solutions

Gateway Medical Solutions | AdvancedMD Billing Partner

Gateway Medical Solutions, also known as GMS, is an independent billing company and a platinum partner with AdvancedMD. CEO Annetta Schwader is a Nurse Practitioner with more than 30 years of experience in the medical field. Annetta is also a certified biller and certified billing instructor. Scott Schwader, CFO, has more than 30 years of experience in business, accounting, and economics. GMS is headquartered in Sullivan, MO.

Gateway Medical Solutions Mission

Gateway Medical Solutions is committed to maintaining a high quality of integrity, compliance, and ethics. The company’s mission is to streamline the claim process while improving customer service and offering comprehensive medical billing services. The caring and friendly staff will always be happy to assist and provide expertise with educational seminars as well as working one on one with client office staff and training with the AdvancedMD practice management system.

GMS Customer Service

Each client is assigned a designated team including a medical biller, payment poster, accounts resolution specialist, credentialing specialist, and collections specialist. All team members are available to providers and their staff during business hours. GMS assumes all phone calls from patients regarding statements and accounts to help lessen the load for your front office staff.

How GMS Works Claims

Once you submit your charges to GMS, a team reviews the superbill, verifies insurance coverage, and submits the claim to insurance. Prior to being sent to insurance, GMS uses the claim scrubber offered by AdvancedMD, which scrubs for thousands of possible errors ensuring clean claim submission. All denials are worked immediately and our 120+ day A/R is always well under the industry standard of 10% of outstanding charges.

Transitioning to GMS

Since the company’s inception, GMS has used AdvancedMD practice management. GMS is an expert in AdvancedMD and is confident in the company’s ability to meet and exceed billing expectations. Providers and office staff have full access to billing records and can access hundreds of reports with real-time data. Providers are welcome to utilize AdvancedMD EHR or a separate EHR of their choosing. GMS’ goal is to keep its clients comfortable in the software they use daily.

Specialties and Locations Served

GMS works with a vast variety of medical specialties. Current top specialties  include pain management, pediatrics, OB/GYN and neonatology, general surgery, gastroenterology, and family practice.

Gateway Medical Solutions offers collections, a patient call center, credentialing, analytics and consulting services to providers in all 50 states of the USA. Learn more about Gateway Medical Solutions and the full list of current medical specialties served as well as current services offered.


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Jed Shay, MD
The Pain Care Center

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“[Our] patients are very well-educated and well-informed, and they want to see results quickly. The practice has to run extremely efficiently and be accessible to them. The nice thing about [AdvancedMD] is it has allowed me to be more efficient both in and out of the office. Now I don’t have to come back into the office, which is great for my family and everything else. It saves me a lot of time – probably an hour a day on the three days I work in the second office.”

Keith Berkowitz, MD
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Estaban Lavato, MD - La Loma Medical Center

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Estaban Lavato, MD
La Loma Medical Center

“Having integrated practice management and EHR is absolutely wonderful, you don’t have to flip back and forth between systems—all of your information is at hand when needed.”

Raju Raval, MD

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