Dr. Stephen E. Gellis, MD
- Part D claims, 2020
- 19
- Hospital affiliations
- 1
- Industry payments
- $22
- Medical group
- 1
- State license
- 1
- Practice address
- 300 Longwood Avenue, Boston, MA 02115
- 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. Gellis' 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. Stephen E. Gellis is a pediatric dermatology physician in Boston, Massachusetts
Dr. Gellis practices at Boston Children's Hospital in Boston, Massachusetts, part of The Children's Hospital.
Dr. Gellis' NPI, 1699873745, was assigned on September 20, 2006. Dr. Gellis graduated from Harvard Medical School in 1973. Dr. Gellis holds Massachusetts license 41583.
- NPI
- 1699873745NPI Registry (opens in a new tab)
- NPI enumeration date
- September 20, 2006
- NPI status
- Active
- Practice phone
- (617) 735-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Stephen E. Gellis practices at Boston Children's Hospital in Boston, Massachusetts
Dr. Gellis' primary practice is Boston Children's Hospital, at 300 Longwood Avenue, Boston, MA 02115 in Suffolk County. The practice phone is (617) 735-6000.
- Boston Children's Hospital300 Longwood Avenue, Boston, MA 02115 · Suffolk CountyPhone(617) 735-6000
Source: Dmand AI Affiliation Data
Dr. Stephen E. Gellis is affiliated with 2 sites of care and 1 medical group
Dr. Gellis' 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 Hospital. Dmand AI also links Dr. Gellis to 1 more dialysis center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephen E. Gellis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gellis practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Boston Children's Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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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. Stephen E. Gellis is one of 13 pediatric dermatology physicians in Massachusetts
Pediatric dermatology is Dr. Gellis' primary specialty in the NPI Registry, under taxonomy code 207NP0225X. Dr. Gellis is licensed in Massachusetts.
Specialties and state licenses
- Pediatric dermatology, MassachusettsPrimary
Pediatric dermatology physicians near Dr. Gellis
Counts of pediatric dermatology 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. Stephen E. Gellis' patients have a median age of 10
Across all payers, Dmand AI patient panel data puts Dr. Gellis' median patient age at 10, with 50% women.
Dr. Gellis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 10
Patient panel by sex, all payers
- Women50%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Stephen E. Gellis wrote 19 Medicare Part D claims in 2020
In 2020, Dr. Gellis wrote 19 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $1,421 in total drug cost.
Dr. Gellis' most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Stephen E. Gellis received $22 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Gellis from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $22.
Companies that paid Dr. Gellis the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen E. Gellis graduated from Harvard Medical School
Dr. Gellis graduated from Harvard Medical School in 1973.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen E. Gellis'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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| 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. Stephen E. Gellis
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. Stephen E. Gellis' NPI number?
Dr. Stephen E. Gellis' NPI number is 1699873745. It was assigned on September 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen E. Gellis?
Dr. Stephen E. Gellis is a pediatric dermatology physician in Boston, Massachusetts. The primary specialty in the NPI Registry is Pediatric Dermatology Physician (taxonomy code 207NP0225X).
Where does Dr. Stephen E. Gellis practice?
Dr. Gellis practices at 300 Longwood Avenue, Boston, MA 02115. Dr. Gellis' primary practice is Boston Children's Hospital in Boston, Massachusetts, part of The Children's Hospital. Dmand AI also links Dr. Gellis to 1 dialysis center.
What is Dr. Stephen E. Gellis' office phone number?
The practice phone on file for Dr. Gellis is (617) 735-6000.
What is Dr. Stephen E. Gellis' medical license number?
Dr. Gellis holds Massachusetts license 41583.
Which hospitals is Dr. Stephen E. Gellis affiliated with?
Dr. Gellis practices at Boston Children's Hospital in Boston, Massachusetts.
What medical group is Dr. Stephen E. Gellis part of?
Dr. Gellis is linked to Boston Children's Hospital.
Where did Dr. Stephen E. Gellis go to medical school?
Dr. Gellis graduated from Harvard Medical School in 1973.
What drugs does Dr. Stephen E. Gellis prescribe most?
In 2020 Medicare Part D data, Dr. Gellis' most prescribed drugs by claims were Tretinoin.
Has Dr. Stephen E. Gellis received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Dr. Gellis from 1 company from 2018 to 2018. The largest total came from Pfizer Inc.
How long has Dr. Stephen E. Gellis been practicing?
Dr. Gellis graduated from medical school in 1973, 53 years ago.
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