Dr. Gerald Ross Marx, MD
- Medicare services, 2023
- 16
- Publications
- 195
- Medical group
- 1
- Insurance carriers
- 13
- State licenses
- 4
- Practice address
- 300 Longwood Avenue, Boston, MA
- Practice phone
- Call (617) 735-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Marx's professional email, personal email and mobile number
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Dr. Gerald Ross Marx is a pediatric cardiology physician in Boston, Massachusetts
Dr. Marx practices at Boston Children's Hospital in Boston, Massachusetts, part of The Children's Hospital.
Dr. Marx's NPI, 1063403384, was assigned on November 4, 2005. Dr. Marx graduated from David Geffen School of Medicine at UCLA in 1976. Dr. Marx holds Massachusetts license 60399.
- NPI
- 1063403384NPI Registry (opens in a new tab)
- NPI enumeration date
- November 4, 2005
- NPI status
- Active
- Practice phone
- (617) 735-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Gerald Ross Marx practices at Boston Children's Hospital in Boston, Massachusetts
Dr. Marx's primary practice is Boston Children's Hospital, at 300 Longwood Avenue, Boston, MA in Suffolk County. The practice phone is (617) 735-6000.
- Boston Children's Hospital300 Longwood Avenue, Boston, MA · Suffolk CountyPhone(617) 735-6000
Source: Dmand AI Affiliation Data
Dr. Gerald Ross Marx is affiliated with 1 medical group
Dr. Marx's primary practice is Boston Children's Hospital in Boston, Massachusetts, part of The Children's Hospital. The medical group on file is Boston Children's Benderson Family Heart Center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gerald Ross Marx's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marx practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Boston Children's Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across The Children's Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gerald Ross Marx is one of 109 pediatric cardiology physicians in Massachusetts
Pediatric cardiology is Dr. Marx's primary specialty in the NPI Registry, under taxonomy code 2080P0202X. Dr. Marx is board certified in pediatric cardiology by the American Board of Pediatrics. Dmand AI has Dr. Marx's licenses on file in 4 states: Massachusetts, Oregon, Florida and Arizona.
Specialties and state licenses
- Pediatric cardiology, MassachusettsPrimary
- Oregon license
- Florida license
- Arizona license
Pediatric cardiology physicians near Dr. Marx
Counts of pediatric cardiology physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gerald Ross Marx billed Medicare for 16 services in 2023
CMS data shows 16 Medicare services from Dr. Marx across 1 procedure code in 2023, all of them office visits. Medicare paid $2,366 for them. Every service was in an office.
Dr. Marx's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 232023: 1630%
Dr. Marx compared with the Massachusetts median for pediatric cardiology physicians, 2023
- Dr. Marx
- Massachusetts median
- Medicare services
- 16vs 4262% below
Medians across 40 pediatric cardiology physicians in Massachusetts with Dmand AI profiles that report each measure.
Dr. Marx's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Marx?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marx and other pediatric cardiology physicians in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gerald Ross Marx's patients have a median age of 18
Across all payers, Dmand AI patient panel data puts Dr. Marx's median patient age at 18, with 49% women.
Dr. Marx's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 18
Patient panel by sex, all payers
- Women49%
- Men49%
Source: Dmand AI Patient Panel Data
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Dr. Gerald Ross Marx has 195 publications on record
Dmand AI links 195 papers to Dr. Marx, published from 2004 to 2025. 2020 was the busiest year, with 9. The most frequent topics are Cardiac Surgical Procedures, Echocardiography and Heart Ventricles. Dr. Marx has published most often in J Thorac Cardiovasc Surg. Dr. Marx's most frequent co-authors are Pedro J. Del Nido, MD, Christopher Wallace Baird, MD and Sitaram Manohar Emani, MD.
Dr. Marx's papers by year, 2016 to 2025
Topics Dr. Marx writes about most
- Cardiac Surgical Procedures
- Echocardiography
- Heart Ventricles
- Heart Defects, Congenital
- Echocardiography, Three-Dimensional
- Mitral Valve
- Mitral Valve Insufficiency
- Hemodynamics
Dr. Marx's most frequent co-authors
- Pedro J. Del Nido, MD76 shared papers
- Christopher Wallace Baird, MD31 shared papers
- Sitaram Manohar Emani, MD30 shared papers
Recent publications by Dr. Marx
J Thorac Cardiovasc Surg
J Am Soc Echocardiogr
See who Dr. Marx researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Marx works with, so you can find a warm path to the right pediatric cardiology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gerald Ross Marx has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Marx, most recently Regional Top Doctor in 2014.
Awards and honors for Dr. Marx
- 2014
- Regional Top Doctor
- Undated
- ACC Fellow
Source: Dmand AI Professional Profile Data
Dr. Gerald Ross Marx graduated from David Geffen School of Medicine at UCLA
Dr. Marx graduated from David Geffen School of Medicine at UCLA in 1976. Dr. Marx is a member of ACC.
- Medical school
- Board certified in pediatric cardiology
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Gerald Ross Marx accepts plans from 13 insurance carriers
Dr. Marx is in network with 13 carriers, including Elevance, Excellus BlueCross BlueShield and United Healthcare. Medicaid plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- Excellus BlueCross BlueShield
- United Healthcare
- AK State Medicaid
- CMS Medicare
- EMI Health
- GA State Medicaid
- NC State Medicaid
- +5 more carriersWith a free account
Plan types Dr. Marx accepts, by number of carriers
- Medicaid8
- Medicare4
- PPO4
- HMO3
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Gerald Ross Marx's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gerald Ross Marx
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gerald Ross Marx's NPI number?
Dr. Gerald Ross Marx's NPI number is 1063403384. It was assigned on November 4, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gerald Ross Marx?
Dr. Gerald Ross Marx is a pediatric cardiology physician in Boston, Massachusetts. The primary specialty in the NPI Registry is Pediatric Cardiology Physician (taxonomy code 2080P0202X).
Where does Dr. Gerald Ross Marx practice?
Dr. Marx practices at 300 Longwood Avenue, Boston, MA. Dr. Marx's primary practice is Boston Children's Hospital in Boston, Massachusetts, part of The Children's Hospital.
What is Dr. Gerald Ross Marx's office phone number?
The practice phone on file for Dr. Marx is (617) 735-6000.
What is Dr. Gerald Ross Marx's medical license number?
Dr. Marx holds Massachusetts license 60399, one of the licenses on file in 4 states.
Which states has Dr. Gerald Ross Marx been licensed in?
Dmand AI has state licenses on file for Dr. Marx in Massachusetts (1988 to 2027), Oregon (since 1982), Florida (2017 to 2019) and Arizona (1983 to 2010).
Which hospitals is Dr. Gerald Ross Marx affiliated with?
Dr. Marx practices at Boston Children's Hospital in Boston, Massachusetts.
What medical group is Dr. Gerald Ross Marx part of?
Dr. Marx is linked to Boston Children's Benderson Family Heart Center.
Does Dr. Gerald Ross Marx accept Medicare?
Yes. CMS data shows Dr. Marx billed Medicare for 16 services in 2023.
Is Dr. Gerald Ross Marx board certified?
Yes. Dr. Marx is board certified in pediatric cardiology by the American Board of Pediatrics.
Show 6 more questionsShow fewer questions
What services does Dr. Gerald Ross Marx bill to Medicare?
In 2023, Dr. Marx's most billed Medicare services were office visit, established patient (99215).
Where did Dr. Gerald Ross Marx go to medical school?
Dr. Marx graduated from David Geffen School of Medicine at UCLA in 1976.
How long has Dr. Gerald Ross Marx been practicing?
Dr. Marx graduated from medical school in 1976, 50 years ago.
Does Dr. Gerald Ross Marx do research?
Dmand AI links 195 publications to Dr. Marx, published from 2004 to 2025.
Who does Dr. Gerald Ross Marx publish with?
Dr. Marx's most frequent co-authors are Pedro J. Del Nido, MD (76 shared papers), Christopher Wallace Baird, MD (31 shared papers) and Sitaram Manohar Emani, MD (30 shared papers).
What insurance does Dr. Gerald Ross Marx accept?
Dr. Marx is in network with 13 carriers, including Elevance, Excellus BlueCross BlueShield and United Healthcare. Medicaid plans come from the most carriers, 8. Check the plan with the practice before a visit.
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