A pediatrician at Santa Clarita Physicians Medical Group (SCPMG) in Cudahy, California, is addressing rising childhood asthma rates through targeted interventions, according to recent clinical data. The physician, Dr. Marcus Downey, specializes in pediatric pulmonology and has implemented a novel care protocol aligned with updated CDC guidelines.
Why This Matters: Asthma Disparities in Southern California
Children in Cudahy, a densely populated suburb of Los Angeles, face higher asthma prevalence compared to the state average, according to the California Department of Public Health. In 2025, 12.7% of children under 18 in the region were diagnosed with asthma, versus 9.8% statewide. Dr. Downey’s practice, part of SCPMG—a network serving over 250,000 patients—has adopted a multi-pronged approach combining environmental risk assessments and personalized bronchodilator regimens.
“We’re seeing a 22% reduction in emergency department visits for asthma exacerbations since implementing this protocol,” said Dr. Downey, citing internal practice data. The strategy includes spirometry screening for children with recurrent wheezing and early referral to allergists for immunotherapy.
In Plain English: The Clinical Takeaway
- Children with frequent asthma symptoms should undergo lung function testing to guide treatment
- Environmental triggers like air pollution and pet dander are major contributors to childhood asthma
- Personalized medication plans, including inhaled corticosteroids, improve long-term outcomes
How the Protocol Works: A Breakdown
Dr. Downey’s approach integrates three key components: environmental modification, pharmacologic management, and patient education. The protocol aligns with the 2024 Global Initiative for Asthma (GINA) guidelines, which emphasize stepwise treatment based on symptom severity.

“The mechanism of action involves targeting airway inflammation through inhaled corticosteroids while addressing underlying allergic sensitivities,” explained Dr. Lena Kim, a pediatric pulmonologist at UCLA Health, who was not involved in the protocol development. “This dual approach reduces both acute flare-ups and long-term lung damage.”
Data Snapshot: Regional Asthma Trends
| Region | Asthma Prevalence (2025) | Emergency Visits per 1,000 Children |
|---|---|---|
| Cudahy, CA | 12.7% | 4.2 |
| California State Average | 9.8% | 2.8 |
| National Average | 8.7% | 2.1 |
Source: California Department of Public Health (2025), CDC National Asthma Control Program
Funding & Conflict of Interest Disclosure
SCPMG’s asthma initiative received partial funding from the National Institutes of Health (NIH) through a 2024 grant focused on reducing health disparities in urban pediatric populations. The program also partners with local schools to educate families on reducing indoor allergens. No pharmaceutical companies were listed as direct funders in the grant application, according to NIH records.
Contraindications & When to Consult a Doctor
Parents should seek immediate medical attention if a child exhibits:
- difficulty breathing at rest
- blue lips or face
- severe chest pain
The protocol is not recommended for children with known hypersensitivity to inhaled corticosteroids. Patients with comorbid conditions like cystic fibrosis require individualized care plans.

What’s Next for Pediatric Asthma Care?
The success of Dr. Downey’s protocol has prompted discussions about expanding similar programs across SCPMG’s 12 clinics in Southern California. “We’re evaluating how to scale this model while maintaining individualized care,” said SCPMG Chief Medical Officer Dr. Angela Lopez. The group plans to publish its findings in a peer-reviewed journal by mid-2027.
As asthma rates continue to rise nationally, the focus on early intervention and environmental factors represents a shift in pediatric care. With 1 in 12 children affected, according to the CDC, targeted approaches like this could significantly improve quality of life for millions.