Summary

Dr. Marlon Decastro is an internal medicine physician who earned his medical degree from the University of the Philippines Manila College of Medicine. He completed his residency training at Nassau University Medical Center, building expertise in comprehensive adult healthcare. With 29 years of experience in internal medicine, Dr. Decastro focuses on preventive care and managing chronic conditions in adult patients. He provides care in English.

Dr. Decastro practices at Providence Medical Group locations in Santa Rosa, California, and also serves patients at Sutter Santa Rosa Regional Hospital. He specializes in treating cardiovascular conditions such as high cholesterol and hypertension in both adults and young patients. His practice emphasizes preventive care through immunizations, including flu, pneumonia, and shingles vaccines. Patients have given Dr. Decastro an average rating of 3.8.

Overview based on verified provider data

Quick Facts

  • 3.8
  • 29 years of experience
  • 41 insurance plans accepted
  • speaks English
  • Nassau University Medical Center
  • 1 specialty
  • 8 areas of expertise
  • 1 board certification
  • 3 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Marlon Cheng Decastro has 3 locations

Providence Medical Group Santa Rosa Internal Medicine

1162 MONTGOMERY DR FL 2SANTA ROSA, CA 95405
Mon9:00 am - 4:30 pm
Tue9:00 am - 4:30 pm
Wed9:00 am - 4:30 pm
Thu9:00 am - 4:30 pm
Fri9:00 am - 12:00 pm
SatClosed
SunClosed

Providence Medical Group Santa Rosa - Internal Medicine

1162 Montgomery Dr Ste 2Santa Rosa, CA 95405
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Sutter Santa Rosa Regional Hospital

30 Mark West Springs RdSanta Rosa, CA 95403

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Dr. Marlon Cheng Decastro, MDDr. Nima Ghadimi, MDKarthikeyan Viswanathan, DODr. Daniel Benhuri, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
3.8 
3.8 
29 Years of Experience 29 Years of Experience 12 Years of Experience 8 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English, Spanish Speaks English, Tamil Speaks English
SANTA ROSA , CAScottsdale , AZPalo Alto , CABeverly Hills , CA
Med School: University Of The Philippines Manila College Of Medicine Med School: Univ Iberoamericana Unibe Santo Domingo Med School: Bassett Medical Center - Cooperstown, New York Med School: Icahn School of Medicine at Mount Sinai
Current Profile
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Insurance Plans Accepted by Dr. Marlon Cheng Decastro

  • AARP
  • Aetna
  • Aetna - Medicare
  • AltaMed Senior BuenaCare (PACE)
  • Anthem Blue Cross
  • Anthem Blue Cross and Blue Shield of Georgia
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Oklahoma
  • Blue Cross Blue Shield of South Carolina
  • BLUE CROSS of CALIFORNIA
  • BLUE CROSS of CALIFORNIA - HMO
  • Blue Shield of California
  • Blue Shield of California - HMO
  • CareFirst Blue Cross Blue Shield - HMO
  • Cigna
  • Commonwealth Care Alliance
  • Contra Costa Health Plan
  • Health Net - HMO
  • Hometown Health
  • Humana
  • Humana - Medicaid
  • Humana - Medicaid (Managed)
  • Kaiser Permanente
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Partnership HealthPlan of California
  • Providence Health Plans
  • Regence BlueShield
  • SCAN Health Plan
  • SCAN Health Plan - HMO
  • Sutter Health Plus
  • Three Rivers Providers Network (TRPN) - HMO
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare
  • Western Health Advantage
  • Western Health Advantage - HMO

Medical Specialties

Dr. Marlon Cheng Decastro has the following specialty

Specialty Expertise

Dr. Marlon Cheng Decastro has the following 8 areas of expertise

  • Check-up
  • Diabetes
  • Heartburn
  • Immunization
  • Physical
  • Vaccination
  • Weight Loss
  • Weight Loss (non-surgical)

Certifications, License, & Education

29 Years Experience

Dr. Marlon Cheng Decastro holds an active medical license in the state of California.

Medical License

Medical Doctor with an active medical license in the state of California that expires in 2027.

Education & Training

Residency

Completed their residency at Nassau University Medical Center.

Medical School

Graduated from University Of The Philippines Manila College Of Medicine in 1997.

NPI Number

Dr. Decastro's NPI number is 1780643270.

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Frequently Asked Questions

Is Dr. Marlon Decastro accepting new patients?
Dr. Marlon Decastro has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. Marlon Decastro accept virtual/telehealth appointments?
Dr. Marlon Decastro has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does Dr. Marlon Decastro accept my insurance?
You can see the insurance plans that Dr. Marlon Decastro accepts on their Vitals profile.
Where is Dr. Marlon Decastro's office located?
Dr. Marlon Decastro's office is located at 1162 MONTGOMERY DR FL 2, SANTA ROSA, CA, 95405.
How can I make an appointment with Dr. Marlon Decastro?
You can find contact information for Dr. Marlon Decastro here on Vitals.

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