0 reviews
Summary
Dr. Daniel Castellanos is an associate cardiologist in the Department of Cardiology at Boston Children’s Hospital and an assistant professor of pediatrics at Harvard Medical School. He specializes in pediatric cardiology, caring for children with congenital and acquired heart conditions and contributing to advanced cardiac imaging and clinical care.
Dr. Castellanos earned his medical degree from Florida International University Herbert Wertheim College of Medicine, completed his residency at Children’s Hospital Los Angeles, and pursued fellowship training in pediatric cardiology at Baylor College of Medicine/Texas Children’s Hospital and the University of Texas Southwestern.
Dr. Castellanos earned his medical degree from Florida International University Herbert Wertheim College of Medicine, completed his residency at Children’s Hospital Los Angeles, and pursued fellowship training in pediatric cardiology at Baylor College of Medicine/Texas Children’s Hospital and the University of Texas Southwestern.
Quick Facts
- accepting new patients
- 13 years of experience
- 33 insurance plans accepted
- speaks English, Spanish
- Childrens Hospital Los Angeles
- 1 specialty
- 5 areas of expertise
- 1 office location
- Male
Office Location
Department of Cardiology
300 Longwood AveBoston, MA 02115 Tel: (857) 218-6428
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
![]() | ![]() | ![]() | ![]() |
| Daniel Castellanos, MD | Dr. Dana Weisshaar, MD | Monique Joyce Nestor | Dr. Rhonda Sue Fogle, MD |
| Cardiovascular Disease | Cardiovascular Disease | Nurse Practitioner | Pediatrics |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 13 Years of Experience | 37 Years of Experience | 49 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English, Spanish | Speaks English | Speaks English, Russian, Spanish | Speaks English, Spanish |
| Boston , MA | Cambridge , MA | Boston , MA | Melrose , MA |
| Med School: Fiu Herbert Wertheim College Of Medicine | Med School: University of Toledo Medical School | Med School: Indiana University School Of Medicine | |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Daniel Castellanos
Medical Specialties
Daniel Castellanos has the following specialty
Specialty Expertise
Daniel Castellanos has the following 5 areas of expertise
Certifications, License, & Education
13 Years Experience
Daniel Castellanos holds an active medical license in the state of Massachusetts.
Medical License
Medical Doctor with an active medical license in the state of Massachusetts that expires in 2027.
Education & Training
Residency
Completed their residency at Childrens Hospital Los Angeles.
Medical School
Graduated from Fiu Herbert Wertheim College Of Medicine in 2013.
NPI Number
Daniel Castellanos' NPI number is 1003298126.
Similar doctors
Frequently Asked Questions
- Is Daniel Castellanos accepting new patients?
- Daniel Castellanos is accepting new patients on Vitals. View Daniel Castellanos's profile on Vitals to make an appointment.
- Does Daniel Castellanos accept my insurance?
- You can see the insurance plans that Daniel Castellanos accepts on their Vitals profile.
- Where is Daniel Castellanos's office located?
- Daniel Castellanos's office is located at 300 Longwood Ave, Boston, MA, 02115.
- Does Daniel Castellanos accept virtual/telehealth appointments?
- Daniel Castellanos has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- How can I make an appointment with Daniel Castellanos?
- You can find contact information for Daniel Castellanos here on Vitals.
Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews
Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.
Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.
Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.









