Dr. Mareen E. Thomas, MD
- Part D claims, 2024
- 17
- MIPS score, 2024
- 84
- Hospital affiliations
- 1
- Industry payments
- $185
- Medical groups
- 2
- 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. Thomas' 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. Mareen E. Thomas is a pediatric endocrinology physician in Washington, District of Columbia
Dr. Thomas practices at Children's National Hospital in Washington, District of Columbia, part of Children's National Hospital.
Dr. Thomas' NPI, 1972781276, was assigned on February 8, 2008. Dr. Thomas graduated from Virginia Commonwealth University, School of Medicine in 2007. Dr. Thomas holds Virginia license 0101256556.
- NPI
- 1972781276NPI Registry (opens in a new tab)
- NPI enumeration date
- February 8, 2008
- NPI status
- Active
- Practice phone
- (202) 476-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mareen E. Thomas practices at Children's National Hospital in Washington, District of Columbia
Dr. Thomas' 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
Source: Dmand AI Affiliation Data
Dr. Mareen E. Thomas is affiliated with 3 sites of care and 2 medical groups
Dr. Thomas' primary practice is Children's National Hospital in Washington, District of Columbia, part of Children's National Hospital. The medical group on file is MCV Physicians. Dmand AI also links Dr. Thomas to 1 more dialysis center, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mareen E. Thomas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thomas practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Children's National Hospital | Available with a free account |
| +2 more sites 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 Children's National Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mareen E. Thomas is one of 31 pediatric endocrinology physicians in District of Columbia
Pediatric endocrinology is Dr. Thomas' primary specialty in the NPI Registry, under taxonomy code 2080P0205X. Dr. Thomas is licensed in Virginia.
Specialties and state licenses
- Pediatric endocrinology, VirginiaPrimary
Pediatric endocrinology physicians near Dr. Thomas
Counts of pediatric endocrinology 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. Mareen E. Thomas' patients have a median age of 12
Across all payers, Dmand AI patient panel data puts Dr. Thomas' median patient age at 12, with 48% women.
Dr. Thomas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 12
Patient panel by sex, all payers
- Women48%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. Mareen E. Thomas wrote 17 Medicare Part D claims in 2024
In 2024, Dr. Thomas wrote 17 Medicare Part D claims.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mareen E. Thomas scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Thomas for performance year 2024, reported as part of a group.
Dr. Thomas' MIPS scores, performance year 2024
- 84of 100Final score
- 69.9of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mareen E. Thomas received $185 in industry payments from 2022 to 2023
CMS Open Payments shows 2 general payments to Dr. Thomas from 2 drug and device companies from 2022 to 2023. Food and beverage make up the largest share, 55% of the total. Novo Nordisk Inc paid the most, $101.
General payments to Dr. Thomas by program year, 2022 to 2023
General payments to Dr. Thomas by kind, 2022 to 2023
- Food and beverage$10155%
- Education$8445%
Companies that paid Dr. Thomas the most, 2022 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mareen E. Thomas graduated from Virginia Commonwealth University, School of Medicine
Dr. Thomas graduated from Virginia Commonwealth University, School of Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mareen E. Thomas'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 (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (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. Mareen E. Thomas
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. Mareen E. Thomas' NPI number?
Dr. Mareen E. Thomas' NPI number is 1972781276. It was assigned on February 8, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Mareen E. Thomas?
Dr. Mareen E. Thomas is a pediatric endocrinology physician in Washington, District of Columbia. The primary specialty in the NPI Registry is Pediatric Endocrinology Physician (taxonomy code 2080P0205X).
Where does Dr. Mareen E. Thomas practice?
Dr. Thomas practices at 111 Michigan Ave, NW, Washington, DC 20010. Dr. Thomas' primary practice is Children's National Hospital in Washington, District of Columbia, part of Children's National Hospital. Dmand AI also links Dr. Thomas to 1 dialysis center, 1 group practice or clinic and 1 medical group.
What is Dr. Mareen E. Thomas' office phone number?
The practice phone on file for Dr. Thomas is (202) 476-5000.
What is Dr. Mareen E. Thomas' medical license number?
Dr. Thomas holds Virginia license 0101256556.
Which hospitals is Dr. Mareen E. Thomas affiliated with?
Dr. Thomas practices at Children's National Hospital in Washington, District of Columbia.
What medical group is Dr. Mareen E. Thomas part of?
Dr. Thomas is linked to MCV Physicians. Dmand AI links Dr. Thomas to 1 more medical group.
What is Dr. Mareen E. Thomas' MIPS score?
Dr. Thomas' MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
Where did Dr. Mareen E. Thomas go to medical school?
Dr. Thomas graduated from Virginia Commonwealth University, School of Medicine in 2007.
Has Dr. Mareen E. Thomas received payments from drug or device companies?
CMS Open Payments shows $185 in general payments to Dr. Thomas from 2 companies from 2022 to 2023. The largest total came from Novo Nordisk Inc.
How long has Dr. Mareen E. Thomas been practicing?
Dr. Thomas graduated from medical school in 2007, 19 years ago.
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