Marites P Del Rosario, M.D.

Specialist

(661) 726-2826Lancaster, CA
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

Marites P Del Rosario, M.D. has practiced specialist for 38+ years, working in independent practice. With 38+ years of experience, she has been practicing in the Lancaster area. CMS Medicare data shows her patients commonly have mood disorders, anxiety, and depression.

At a glance

  • Uses generic medications more than 88% of reporting doctors in California
  • Virtual visits available — no app or travel required
1 of 264 Specialist providers in CASee all Specialist in Lancaster38+ years experienceNPI since 2006

Older · 3613dNPPES updated 2016-06-14 · verify on CMS

Contact & Location

Practice Location

1672 W Avenue J Ste 110, Lancaster, CA 93534

Fax: (661) 723-9557
CMS Clinical Data

How Does This Doctor Compare?

Based on Medicare data, this doctor favors affordable generic drugs over brand-name ones.

Generic Rx

↑ Higher = better

95.1%

California avg: 83.3 · US avg: 82.8

Higher than most doctors nationally(+12.3 pts)

Better than 88% of reporting doctors in California

How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.

Medicare Patients

157

Unique beneficiaries

Standard volume

Prescription Recipients

273

Patients prescribed

Prescriptions Written

4,253

Total claims

Total Medicare drug cost: $465k

Percentile rankings compared against 9,360 reporting peers in California.

Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.

Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages Mood Disorders, Anxiety Disorders, and Depression.

Mood Disorders
75%

Conditions affecting emotional state, including depression and bipolar disorder

Anxiety Disorders
Higher than avg (+37%)71%

Excessive worry or fear that interferes with daily life

US avg: 34.1%

↑ More patients than average (+37%) — a focus area for this doctor

Depression
Higher than avg (+37%)69%

A mood disorder causing persistent sadness and loss of interest in activities

US avg: 31.8%

↑ More patients than average (+37%) — a focus area for this doctor

Hypertension
Lower than avg (-4%)66%

High blood pressure — a leading risk factor for heart disease and stroke

US avg: 70.2%

↓ Fewer patients than average (-4%) — less common here

High Cholesterol
Lower than avg (-7%)63%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↓ Fewer patients than average (-7%) — less common here

Arthritis
Higher than avg (+6%)55%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↑ More patients than average (+6%) — a focus area for this doctor

Diabetes
Higher than avg (+2%)36%

A condition where the body cannot properly regulate blood sugar levels

US avg: 34.5%

↑ More patients than average (+2%) — a focus area for this doctor

Bipolar Disorder
24%

A condition with extreme mood swings between emotional highs and lows

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

Industry Payment Transparency

$781 received from industry

30 transactions reported in 2024 ·Moderate tier

View on CMS Open Payments →

Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.

Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Marites P Del Rosario's NPI.

Patient Reviews

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. 38 years in practice

    Senior practitioner

SpecialistOther Service Providers

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Taxonomy: 174400000X

Practice Footprint

Mailing address

Po Box 6530, Lancaster, CA 93539-6530

Differs from practice location

Virtual Specialist Care With Marites P Del Rosario

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Marites P Del Rosario for mood disorder follow-ups, anxiety counseling, depression management — no travel to Lancaster required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about Marites P Del Rosario

Dr. Del Rosario is listed as active in the NPI registry with telehealth listed in Lancaster, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (661) 726-2826.

Verified across 5 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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