---
title: Staffing Patterns of Comprehensive Primary Care Practices
nct_id: NCT01827189
overall_status: COMPLETED
sponsor: Mathematica Policy Research, Inc.
study_type: OBSERVATIONAL
primary_condition: Medicare Expenditures and Hospital Use, All Conditions
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT01827189.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT01827189"
ct_last_update_post_date: 2018-08-16
last_seen_at: "2026-05-12T06:50:41.185Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# Staffing Patterns of Comprehensive Primary Care Practices

**Official Title:** Evaluation of the Comprehensive Primary Care Initiative

**NCT ID:** [NCT01827189](https://clinicaltrials.gov/study/NCT01827189)

## Key Facts

- **Status:** COMPLETED
- **Study Type:** OBSERVATIONAL
- **Target Enrollment:** 15000
- **Lead Sponsor:** Mathematica Policy Research, Inc.
- **Conditions:** Medicare Expenditures and Hospital Use, All Conditions
- **Start Date:** 2012-10
- **Completion Date:** 2018-05
- **CT.gov Last Update:** 2018-08-16

## Brief Summary

Examines staff size and composition of the 496 advanced primary care practices participating in CMS's comprehensive primary care initiative, in 7 regions (states or local areas) that were selected for the demonstration.

## Detailed Description

Participating practices all have electronic health records, submitted applications to participate in this demonstration program designed to improve primary care practices, and were selected as the most advanced of the applicants in terms of use of health information technology and certification as a medical home or possessing features similar to those of a medical home. Participating practices will receive monthly payments from Centers for Medicare \& Medicaid (CMS) for Medicare patients attributed to the practice, and from other payers in the market taht are participating in the initiative. The demonstration began in October 2012 and will continue for 4 years. This early paper focuses on describing these practices at the outset of the demonstration.

## Eligibility

- **Minimum age:** 18 Years
- **Sex:** ALL
- **Healthy Volunteers:** No

```
Inclusion Criteria:

* All Medicare fee-for-service patients who receive the majority of their Evaluation and Management visits from one of the study practices.

Exclusion Criteria:

* none.
```

## Arms

- **Comprehensive primary care practices** — Comprehensive primary care practices are the intervention group.
- **Comparison practices** — Comparison practices are the case-control group--the matched set of practices in a comparison area--whose patients' outcomes will be compared to those of intervention practices.

## Interventions

- **Comprehensive primary care** (OTHER) — Practices participating in the comprehensive primary care initiative receive a monthly amount from Centers for Medicare and Medicaid Services for each attributed Medicare patient, plus technical support of a learning collaborative, and can share in any net savings generated.

## Primary Outcomes

- **Medicare expenditures per year for patients attributed to the practice** _(time frame: Four years)_

## Secondary Outcomes

- **number of preventable hospitalizations** _(time frame: four years)_

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `outcomes.secondary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_

---

*Canonical: https://parkinsonspathways.com/agent/trials/NCT01827189.md*  
*Source data (authoritative): https://clinicaltrials.gov/study/NCT01827189*  
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