customer count

The total number of distinct customer entities—such as employer groups or plan sponsors—within a payer, PBM, or managed care system for a given time period or segment. Used in business intelligence, market analysis, and operational reporting to measure book-of-business size and customer portfolio growth trends.

ISO-11179 snake_case standard

-- Recommended column name
cust_cnt

-- Example DDL
CREATE TABLE healthcare_data (
  record_id   VARCHAR(50)   NOT NULL,
  cust_cnt     INTEGER,  -- customer count (count/integer value)
  created_dt  TIMESTAMP     NOT NULL DEFAULT NOW()
);

Column names follow the ISO-11179 naming convention: lowercase, underscore-separated, using the standard abbreviation as a prefix where applicable.

Member and enrollment data governs who receives care and who pays for it — making it foundational to every downstream healthcare analytics workflow. Data engineers who understand member terminology build eligibility pipelines that prevent coverage gaps, correctly identify dual-eligible members, and support accurate risk adjustment submissions to CMS. Enrollment errors directly affect capitation payments and can trigger CMS corrective action plans.

• Member eligibility verification and enrollment tracking
• Medicare Advantage and Medicaid managed care reporting
• COBRA, CHIP, and dual-eligible member management
• Enrollment reconciliation and CMS submissions
• Member 360 data model and longitudinal analysis
• Epic ADT feed parsing for real-time member eligibility updates
• Snowflake member dimension table with SCD Type 2 for full enrollment history
• Databricks streaming enrollment reconciliation pipeline for CMS capitation reporting

• Member ID formats vary significantly across payers and source systems — standardize to a consistent composite key (payer_id + member_id) in your Snowflake member master to support cross-payer analytics.
• Enrollment gaps (periods with no active coverage) must be distinguished from true terminations — model using effective_start_dt and effective_end_dt with explicit gap-detection logic rather than a single status flag.
• Duplicate member records are common when members re-enroll after coverage gaps — implement probabilistic matching on (last_name + dob + gender + zip) to link records to a single master member ID in your MDM layer.