Dr. Mark I. Weissman, MD
- Hospital affiliations
- 1
- Industry payments
- $16
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 111 Michigan Ave, NW, Washington, DC 20010
- Practice phone
- Call (202) 476-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Weissman'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. Mark I. Weissman is a pediatrician in Washington, District of Columbia
Dr. Weissman practices at Children's National Hospital in Washington, District of Columbia, part of Children's National Hospital.
Dr. Weissman's NPI, 1013092386, was assigned on October 26, 2006. Dr. Weissman holds District of Columbia license MD11285.
- NPI
- 1013092386NPI Registry (opens in a new tab)
- NPI enumeration date
- October 26, 2006
- NPI status
- Active
- Practice phone
- (202) 476-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark I. Weissman practices at Children's National Hospital in Washington, District of Columbia
Dr. Weissman's primary practice is Children's National Hospital, at 111 Michigan Ave, NW, Washington, DC 20010 in The District County. The practice phone is (202) 476-5000.
- Children's National Hospital111 Michigan Ave, NW, Washington, DC 20010 · The District CountyPhone(202) 476-5000
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark I. Weissman is affiliated with 1 site of care and 1 medical group
Dr. Weissman's primary practice is Children's National Hospital in Washington, District of Columbia, part of Children's National Hospital. The medical group on file is Children's National Hospital.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark I. Weissman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Weissman practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Children's National 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 Children's National Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark I. Weissman is one of 545 pediatricians in District of Columbia
Pediatrics is Dr. Weissman's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Weissman is licensed in District of Columbia.
Specialties and state licenses
- Pediatrics, District of ColumbiaPrimary
Pediatricians near Dr. Weissman
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. Mark I. Weissman's patients have a median age of 6
Across all payers, Dmand AI patient panel data puts Dr. Weissman's median patient age at 6, with 100% women.
Dr. Weissman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 6
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Mark I. Weissman received $16 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Weissman from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $16.
Companies that paid Dr. Weissman the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark I. Weissman'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand 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) |
| 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. Mark I. Weissman
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. Mark I. Weissman's NPI number?
Dr. Mark I. Weissman's NPI number is 1013092386. It was assigned on October 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark I. Weissman?
Dr. Mark I. Weissman is a pediatrician in Washington, District of Columbia. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Mark I. Weissman practice?
Dr. Weissman practices at 111 Michigan Ave, NW, Washington, DC 20010. Dr. Weissman's primary practice is Children's National Hospital in Washington, District of Columbia, part of Children's National Hospital.
What is Dr. Mark I. Weissman's office phone number?
The practice phone on file for Dr. Weissman is (202) 476-5000.
What is Dr. Mark I. Weissman's medical license number?
Dr. Weissman holds District of Columbia license MD11285.
Which hospitals is Dr. Mark I. Weissman affiliated with?
Dr. Weissman practices at Children's National Hospital in Washington, District of Columbia.
What medical group is Dr. Mark I. Weissman part of?
Dr. Weissman is linked to Children's National Hospital.
Has Dr. Mark I. Weissman received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Dr. Weissman from 1 company from 2016 to 2016. The largest total came from Pfizer Inc.
How long has Dr. Mark I. Weissman been practicing?
Dr. Weissman's NPI was assigned in 2006.
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