For Providers

Benefits to Providers

  • Save staff time to search or replace patient immunization records
  • Improve healthcare delivery to your patients (capability to print reminders)
  • Access a patient’s consolidated history of immunizations received from multiple healthcare providers
  • Assists in vaccine management and prevent costly vaccine waste by avoiding unnecessary doses
  • Achieve reporting requirements or quality improvement measures
  • Electronically submit vaccination data and avoid manual data entry

Start using ImmuNet today

Most computers with high-speed internet access are adequate to use ImmuNet, which supports all browsers but Google Chrome is recommended for optimum performance.

Authorized users can access ImmuNet by enrolling here.  

Once DHMH receives the enrollment, you will be contacted with your login information. In the meantime, please refer to the user guides and training videos below to learn how to use ImmuNet.

Submitting and Exchanging Data

Efforts to achieve electronic data exchange will benefit providers for both public health and Meaningful Use (MU) or the MIPS Advancing Care Information (ACI) requirements. If you are not already sending vaccination data to ImmuNet electronically and would like to start, you can visit the DHMH Public Health Reporting webpage to view the steps for data exchange. You can find the standard specifications (HL7 v2.5.1) for sending electronic data, as well as options on how to send the data (SOAP web services or SFTP).

Step 1 (Registration) is only required if you participate in the EHR Incentive or MIPS Program. Multiple locations sharing the same Electronic Health Records (EHR) system can register and onboard together as a group effort. If you have registered in the past and are ready to begin testing, email

Providers not participating in the EHR Incentive or MIPS Program can send data in other formats (HL7 v2.3.1/2.4, HL7 v2.5.1, or flat file) if your EHR does not support the required MU format. See our FAQs or contact the Help Desk with any questions.

ImmuNet also supports bidirectional data exchange through the Maryland State Health Information Exchange partner, CRISP.  Instructions for onboarding with CRISP can be found here.

Note:  As of 01/01/2018, the Maryland Department of Health IIS (ImmuNet) conforms to the CDC HL7 2.5.1 Implementation Guide for Immunization Messaging, Release 1.5 and Addendum, including supporting Query/Response, acknowledgment messaging, and the receipt of National Drug Codes (NDC) for newly-administered immunizations.

Maryland Vaccines for Children (VFC) Provider Requirements in 2017

ImmuNet Login

To sign in to ImmuNet, click here

ImmuNet FAQs – click here

ImmuNet User Info and Training

Looking for Immunization Records?

Providers who do not have access to ImmuNet can request a patient's immunization record by filling out the following information HERE​

  • Full name
  • Date of birth
  • Maiden name (if applicable)
  • Fax number
  • Mailing address

Clients who have opted out in ImmuNet do not wish their records to be made available to authorized ImmuNet users. Providers ma y request those immunization records with a Release of Opted-Out Record form here .  

Please mail or fax the completed form. Do not email the completed form as it places you at risk for exposing your sensitive information. Emailed forms will not be accepted unless you are able to use a secure email service.

Contact Us

Please visit our contact us page located here.

Additional Information

What is an Immunization Information System?

An immunization information system (IIS) is a confidential and secure computer database designed to collect and maintain vaccination records of children and adults. Utilization of the IIS promotes cost-effective and efficient disease prevention, which leads to better health for Maryland's citizens.

Immunization registries have proved successful in meeting social and fiscal goals. An IIS can identify pockets of at-risk children and target resources in these areas to protect at-risk children. Moreover, registries continue to prove their cost-effectiveness. For example, the cost of manually retrieving data for school forms without a registry is $14.50 compared to just $3.91 to maintain a child in an immunization registry.

In 1994, Baltimore city implemented a city-wide registry. Their success has increased the health of Baltimore city's children. The Baltimore Immunization Registry Program (BIRP) helped to increase their 4:3:1 (a measure of childhood vaccine completeness) completion rate from 75% in 1994 to 80% in 2002.

Reasons Why ImmuNet is Necessary

  • Physicians overestimate how many of their patients are fully immunized.
  • Parents often are not aware of their child’s immunization status.
  • Due to poor record keeping, a child may receive too many immunizations.
  • Duplicate immunization costs are estimated at $15 million annually
  • Most providers don't have immunization reminder systems
  • High risk and under-immunized populations are easily identifiable with an immunization information system.