Dr. Marc James Grella, MD
- Hospital affiliations
- 1
- Industry payments
- $1,524
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grella's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Marc James Grella is a pediatrician in Boston, Massachusetts
Dr. Grella practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Grella's NPI, 1699765750, was assigned on October 28, 2005. Dr. Grella graduated from New York Medical College in 1993. Dr. Grella holds Massachusetts license 151202.
- NPI
- 1699765750NPI Registry (opens in a new tab)
- NPI enumeration date
- October 28, 2005
- NPI status
- Active
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Marc James Grella practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Grella's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Marc James Grella is affiliated with 2 sites of care and 2 medical groups
Dr. Grella's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. The medical group on file is Massachusetts General Hospital. Dmand AI also links Dr. Grella to 1 more community health center and 1 medical group, each named with a free account. Dr. Grella's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marc James Grella's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grella practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +1 more site and 1 medical group | 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 Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Marc James Grella is one of 2,101 pediatricians in Massachusetts
Pediatrics is Dr. Grella's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Grella is licensed in Massachusetts.
Specialties and state licenses
- Pediatrics, MassachusettsPrimary
Pediatricians near Dr. Grella
Counts of pediatricians 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. Marc James Grella's patients have a median age of 5
Across all payers, Dmand AI patient panel data puts Dr. Grella's median patient age at 5, with 36% women.
Dr. Grella's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 5
Patient panel by sex, all payers
- Women36%
- Men65%
Source: Dmand AI Patient Panel Data
Dr. Marc James Grella received $1,524 in industry payments from 2016 to 2025
CMS Open Payments shows 8 general payments to Dr. Grella from 4 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 37% of the total. Seqirus USA Inc paid the most, $1,019.
General payments to Dr. Grella by program year, 2016 to 2025
General payments to Dr. Grella by kind, 2016 to 2025
- Consulting fees$55937%
- Honoraria$48532%
- Food and beverage$43128%
- Education$503%
Companies that paid Dr. Grella the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marc James Grella graduated from New York Medical College
Dr. Grella graduated from New York Medical College in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marc James Grella'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Marc James Grella
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. Marc James Grella's NPI number?
Dr. Marc James Grella's NPI number is 1699765750. It was assigned on October 28, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Marc James Grella?
Dr. Marc James Grella is a pediatrician in Boston, Massachusetts. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Marc James Grella practice?
Dr. Grella practices at 55 Fruit Street, Boston, MA 02114. Dr. Grella's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Grella to 1 community health center and 1 medical group.
What is Dr. Marc James Grella's office phone number?
The practice phone on file for Dr. Grella is (617) 726-2000.
What is Dr. Marc James Grella's medical license number?
Dr. Grella holds Massachusetts license 151202.
Which hospitals is Dr. Marc James Grella affiliated with?
Dr. Grella practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Dr. Marc James Grella part of?
Dr. Grella is linked to Massachusetts General Hospital. Dmand AI links Dr. Grella to 1 more medical group.
Where did Dr. Marc James Grella go to medical school?
Dr. Grella graduated from New York Medical College in 1993.
Has Dr. Marc James Grella received payments from drug or device companies?
CMS Open Payments shows $1,524 in general payments to Dr. Grella from 4 companies from 2016 to 2025. The largest total came from Seqirus USA Inc.
How long has Dr. Marc James Grella been practicing?
Dr. Grella graduated from medical school in 1993, 33 years ago.
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