Medi-Cal Enrollment Counts by CMS Eligibility Group

Monthly enrollment totals for Medi-Cal, California's Medicaid program, categorized by Modified Adjusted Gross Income (MAGI), non-MAGI, and Children’s Health Insurance Program (CHIP) eligibility groups. The Department of Health Care Services submits this data to the Centers for Medicare and Medicaid Services, with reported totals reflecting enrollment as of 60 days after each eligibility month.

Use Cases

• Analyze enrollment trends across MAGI – Child, MAGI – Adult, Non-MAGI Child, Non-MAGI Adult, and CHIP eligibility groups over time.
• Compare enrollment volumes between full-scope Medi-Cal groups reported to CMS and state-only funded programs labeled as Non-CMSPI.
• Model seasonal or policy-driven fluctuations in total enrollment using the monthly Reporting Period data.

Strengths

• Data is reported monthly to the federal Centers for Medicare and Medicaid Services, ensuring a regular update cadence.
• Categorizes enrollment by federally defined CMS Performance Indicators (CMSPI) groups, enabling standardized analysis.
• Distinguishes between federally reported full-scope enrollment and state-only Non-CMSPI programs, clarifying data scope.

Limitations

• The specific number of rows and columns is unknown, limiting assessment of dataset granularity and volume.
• Enrollment totals are reported with a 60-day lag after the eligibility month, not in real-time.
• Data excludes individuals enrolled in limited scope Medi-Cal, presenting an incomplete picture of total program participation.

Provenance

Source

State of California, Department of Health Care Services.

Collection Method

Submitted monthly by DHCS to the Centers for Medicare and Medicaid Services per CMSPI reporting requirements.

Time Range

Monthly data; specific start date unknown.

Freshness

Updated monthly; last update was March 2026.

Geography

State of California, United States.