Marissa S Aaron
Pediatrics β’ Boston, MA
333 Longwood Ave
Boston, MA 021155711
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
333 Longwood Ave
Boston, MA 021155711
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Chicago, IL; Hartford, CT. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Pediatrics: NPPES taxonomy is a reported classification, not proof of board certification.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019β2025.
NPI first issued
2017
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Boston and Massachusetts
822 active clinicians are listed under Pediatrics with a practice address in Boston, MA (2,628 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Boston
0.9% of these 822 clinicians have the CMS telehealth indicator.
13.5% of these 822 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-11-13NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Secondary Practice Locations
282 Washington St
Hartford, CT 061063322
Phone: 8605459000
240 E Huron St Ste 1-200
Chicago, IL 606112909
Phone: 3125037975
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Pediatrics - Pediatric Endocrinology
Doctor of Medicine (M.D.)
Pediatrics - Pediatric Endocrinology
Doctor of Medicine (M.D.)
Pediatrics - Pediatric Endocrinology
Doctor of Medicine (M.D.)
Pediatrics - Pediatric Endocrinology
Doctor of Medicine (M.D.)
Medical Genetics - Clinical Genetics (M.D.)
Doctor of Medicine (M.D.)
Pediatrics - Pediatric Endocrinology
Doctor of Medicine (M.D.), Master of Public Health
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 333 LONGWOOD AVE, BOSTON, MA 021155711 (Tel: 6173557476)
Registered at 333 LONGWOOD AVE, BOSTON, MA 021155711 (Tel: 6173557476)
Recorded as MARISSA AARON
Pediatrics (license number reported to NPPES: MA 1018771)
Registered at 282 WASHINGTON ST, HARTFORD, CT 061063322 (Tel: 8605459000)
Registered at 263 FARMINGTON AVE, FARMINGTON, CT 060301921 (Tel: 8606792147)
NPI status registered as active in NPPES database
Registered at 240 E HURON ST STE 1-200, CHICAGO, IL 606112909 (Tel: 3125037975)
Registered at 240 E HURON ST STE 1-200, CHICAGO, IL 606112909
Recorded as MARISSA RODENSTEIN
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Pediatrics Specialists in Boston
- Dr. Janet Chou, MD
- Clement Lee
- Dr. Elizabeth Pisarik, MD
- Dr. Dascha Weir, MD
- Dr. Howard Weinstein, MD
- Dr. Stephanie Santoro, MD
Mailing Address
333 Longwood Ave
Boston, MA 021155711
Phone: 6173557476