Dr. Eva F. Simmons-O'Brien, MD
- Part D claims, 2024
- 251
- Publications
- 5
- Industry payments
- $9,994
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 600 N Wolfe St, Baltimore, MD 21287
- Practice phone
- Call (855) 662-3017
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Johns Hopkins Hospital Nelson/Harvey Building
Baltimore, Maryland
Find Dr. Simmons-O'Brien'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. Eva F. Simmons-O'Brien is a dermatologist in Baltimore, Maryland
Dr. Simmons-O'Brien practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland.
Dr. Simmons-O'Brien's NPI, 1285663542, was assigned on June 30, 2006. Dr. Simmons-O'Brien holds Maryland license D43953.
- NPI
- 1285663542NPI Registry (opens in a new tab)
- NPI enumeration date
- June 30, 2006
- NPI status
- Active
- Practice phone
- (855) 662-3017
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Eva F. Simmons-O'Brien practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland
Dr. Simmons-O'Brien's primary practice is Johns Hopkins Hospital Nelson/Harvey Building, at 600 N Wolfe St, Baltimore, MD 21287 in Baltimore City. The practice phone is (855) 662-3017.
- Johns Hopkins Hospital Nelson/Harvey Building600 N Wolfe St, Baltimore, MD 21287 · Baltimore CityPhone(855) 662-3017
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Eva F. Simmons-O'Brien is affiliated with 1 site of care
Dr. Simmons-O'Brien's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Eva F. Simmons-O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simmons-O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Johns Hopkins Hospital Nelson/Harvey Building | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Eva F. Simmons-O'Brien is one of 270 dermatologists in Maryland
Dermatology is Dr. Simmons-O'Brien's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Simmons-O'Brien is licensed in Maryland.
Specialties and state licenses
- Dermatology, MarylandPrimary
Dermatologists near Dr. Simmons-O'Brien
Counts of dermatologists 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. Eva F. Simmons-O'Brien's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Simmons-O'Brien's median patient age at 58, with 63% women.
Dr. Simmons-O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women63%
- Men35%
Source: Dmand AI Patient Panel Data
Dr. Eva F. Simmons-O'Brien wrote 251 Medicare Part D claims in 2024
In 2024, Dr. Simmons-O'Brien wrote 251 Medicare Part D claims for 110 patients. 90% of them were for generic drugs. CMS names the drug for 172 of them, across 8 drugs with 11 or more claims each, at $10,714 in total drug cost. In 2023, CMS named 131 claims across 6 drugs.
Dr. Simmons-O'Brien's Part D claims by kind of drug, 2024
- Generic227 claims90%
- Brand-name and other24 claims10%
Dr. Simmons-O'Brien's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Simmons-O'Brien's Part D claims, 2024
- Antibiotics8%19 of 251 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1312024: 17231%
Drugs named by CMS: 8 in 2024, 6 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Eva F. Simmons-O'Brien has 5 publications on record
Dmand AI links 5 papers to Dr. Simmons-O'Brien in 2023. 2023 was the busiest year, with 2. The most frequent topics are Skin. Dr. Simmons-O'Brien's most frequent co-authors are Diane Julie Orlinsky, MD, Valerie Dawn Callender, MD and Vivian W. Bucay, MD.
Topics Dr. Simmons-O'Brien writes about most
- Skin
Dr. Simmons-O'Brien's most frequent co-authors
- Diane Julie Orlinsky, MD4 shared papers
- Valerie Dawn Callender, MD2 shared papers
- Vivian W. Bucay, MD1 shared paper
Recent publications by Dr. Simmons-O'Brien
J Drugs Dermatol
J Clin Aesthet Dermatol
See who Dr. Simmons-O'Brien researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Simmons-O'Brien works with, so you can find a warm path to the right dermatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Eva F. Simmons-O'Brien received $9,994 in industry payments from 2016 to 2025
CMS Open Payments shows 456 general payments to Dr. Simmons-O'Brien from 46 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Galderma Laboratories, L.P. paid the most, $1,232.
General payments to Dr. Simmons-O'Brien by program year, 2016 to 2025
General payments to Dr. Simmons-O'Brien by kind, 2016 to 2025
- Food and beverage$9,45195%
- Speaker and faculty fees$4374%
- Education$1071%
Companies that paid Dr. Simmons-O'Brien the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Eva F. Simmons-O'Brien'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice 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)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Eva F. Simmons-O'Brien
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. Eva F. Simmons-O'Brien's NPI number?
Dr. Eva F. Simmons-O'Brien's NPI number is 1285663542. It was assigned on June 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Eva F. Simmons-O'Brien?
Dr. Eva F. Simmons-O'Brien is a dermatologist in Baltimore, Maryland. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. Eva F. Simmons-O'Brien practice?
Dr. Simmons-O'Brien practices at 600 N Wolfe St, Baltimore, MD 21287. Dr. Simmons-O'Brien's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland.
What is Dr. Eva F. Simmons-O'Brien's office phone number?
The practice phone on file for Dr. Simmons-O'Brien is (855) 662-3017.
What is Dr. Eva F. Simmons-O'Brien's medical license number?
Dr. Simmons-O'Brien holds Maryland license D43953.
What drugs does Dr. Eva F. Simmons-O'Brien prescribe most?
In 2024 Medicare Part D data, Dr. Simmons-O'Brien's most prescribed drugs by claims were Mupirocin, Minoxidil and Triamcinolone Acetonide.
Has Dr. Eva F. Simmons-O'Brien received payments from drug or device companies?
CMS Open Payments shows $9,994 in general payments to Dr. Simmons-O'Brien from 46 companies from 2016 to 2025. The largest total came from Galderma Laboratories, L.P.
How long has Dr. Eva F. Simmons-O'Brien been practicing?
Dr. Simmons-O'Brien's NPI was assigned in 2006.
Does Dr. Eva F. Simmons-O'Brien do research?
Dmand AI links 5 publications to Dr. Simmons-O'Brien.
Who does Dr. Eva F. Simmons-O'Brien publish with?
Dr. Simmons-O'Brien's most frequent co-authors are Diane Julie Orlinsky, MD (4 shared papers), Valerie Dawn Callender, MD (2 shared papers) and Vivian W. Bucay, MD (1 shared paper).
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