Dr. Marlon C. DeCastro
- Gender: Male
- Experience: 24 years
- Graduation year: 1997
- Sole propriator: No
- NPI: 1780643270
Dr. Marlon C. DeCastro M.D.
Internist
He is located at 500 Doyle Park Drive Ste. 303 in Santa Rosa, CA 95405. Can help patients with the following: Abdominal Pain, Arthritis, Fever, Gastroesophageal Reflux Disease (GERD), Hot Flashes, Hyponatremia. His National Provider Identifier (NPI) number is 1780643270. Appointment can be made via the phone number (707) 303-8300. He also has a website where you can get more information. The website can be found at https://www.psjhmedgroups.org/Find-a-Doctor/D/Marlon-DeCastro-MD.aspx. He is affiliated with 5 practices and 2 hospitals.
Conditions treated
Dr. Marlon Decastro, being an internist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Marlon C. DeCastro.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Influenza
- Inguinal Hernia
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Prescription Refill
- Urethritis
- Urinary Tract Infection (UTI)
Procedures Performed by Dr. Marlon C. DeCastro
Insurances Accepted by Dr. Marlon C. DeCastro
- Humana
- Medicare
Medicare Enrollment
Dr. Marlon C. DeCastro is enrolled to bill Medicare as a Practitioner - Internal Medicine .
Bills through: Providence Medical Foundation
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.
Payments received
Drug payment
| AstraZeneca | $1789 |
| Boehringer Ingelheim | $1116 |
| Sanofi | $787 |
Other
| Food and Beverage | $9783 |
| Consulting | $55 |
Studies
Graduated in 1997Other ways to reach out
- Website: https://www.psjhmedgroups.org/Find-a-Doctor/D/Marlon-DeCastro-MD.aspx
- Facebook: https://www.facebook.com/sjhmedicalgroup/
Affiliated practices
Looking for more Internists?
Out of the 55 internists in this region, here are 10 randomly selected ones for you to explore.
- Gender: Male
- Address: 4700 Hoen Avenue Santa Rosa, 95405, CA
- Gender: Male
- Address: 85 High Street Buffalo, 14203, NY
- Gender: Male
- Address: Suite G03 500 Doyle Park Drive Santa Rosa, 95405, CA
- Gender: Male
- Address: 1165 Montgomery Dr. Santa Rosa, 95405, CA
- Gender: Female
- Address: Ste. 303 500 Doyle Park Dr. Santa Rosa, 95405, CA
- Gender: Male
- Address: 4720 Hoen Avenue Santa Rosa, 95405, CA
- Gender: Male
- Address: 1165 Montgomery Dr. Santa Rosa, 95405, CA
- Gender: Female
- Address: 1165 Montgomery Drive Santa Rosa, 95405, CA
- Gender: Male
- Address: Suite 302 500 Doyle Park Drive Santa Rosa, 95405, CA
- Gender: Male
- Address: 3751 Montgomery Drive Santa Rosa, 95405, CA
Questions & Answers
What conditions does Dr. Marlon Decastro treat?
Dr. Marlon Decastro provides treatment for Abdominal Pain, Arthritis, Fever, Gastroesophageal Reflux Disease (GERD), Hot Flashes, Hyponatremia. For the full list see this list.
Does Dr. Marlon Decastro have affiliation with practices?
Dr. Marlon Decastro is affiliated with St. Joseph Heritage Healthcare. For the full list of practices see this list.
Has Dr. Marlon Decastro affiliation with hospitals?
Dr. Marlon Decastro is affiliated with SANTA ROSA MEMORIAL HOSPITAL. For the full list of hospitals see this list.
Does Dr. Marlon Decastro accept patients with Humana?
Yes, Dr. Marlon Decastro accepts patients with Humana.
Where can you meet with Dr. Marlon Decastro?
Dr. Marlon Decastro's office is located at 500 Doyle Park Drive Ste. 303 in Santa Rosa, CA 95405.