Int J Chron Obstruct Pulmon Dis
Administration, InhalationAdrenal Cortex HormonesAdrenergic beta-2 Receptor Agonists
Dr. Gerald M. O'Brien, MD
NPI1215980313
- Publications
- 5
- Industry payments
- $35
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 4745 Ogletown Stanton Rd, Newark, DE 19713-2067
- Practice phone
- Call (302) 368-5515
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. O'Brien's professional email, personal email and mobile number
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Dr. Gerald M. O'Brien is a pulmonologist in Newark, Delaware
Dr. O'Brien practices in Newark, Delaware.
Dr. O'Brien's NPI, 1215980313, was assigned on May 18, 2006. Dr. O'Brien holds Delaware license C10006061.
NPI and contact details
- NPI
- 1215980313NPI Registry (opens in a new tab)
- NPI enumeration date
- May 18, 2006
- NPI status
- Active
- Practice phone
- (302) 368-5515
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Gerald M. O'Brien's practice address is in Newark, Delaware
Dr. O'Brien's practice address in the NPI Registry is 4745 Ogletown Stanton Rd, Newark, DE 19713-2067. The practice phone is (302) 368-5515.
- NPI Registry address4745 Ogletown Stanton Rd, Newark, DE 19713-2067Phone(302) 368-5515
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Gerald M. O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. O'Brien's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gerald M. O'Brien is one of 44 pulmonologists in Delaware
Pulmonary disease is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. O'Brien is licensed in Delaware.
Specialties and state licenses
- Pulmonary disease, DelawarePrimary
Pulmonologists near Dr. O'Brien
Counts of pulmonologists 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. Gerald M. O'Brien's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 64, with 0% women.
Dr. 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 64
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Gerald M. O'Brien has 5 publications on record
Dmand AI links 5 papers to Dr. O'Brien, published from 2014 to 2020. 2018 was the busiest year, with 2. The most frequent topics are Administration, Inhalation, Bronchodilator Agents and Pulmonary Disease, Chronic Obstructive. Dr. O'Brien has published most often in Pulm Circ. Dr. O'Brien's most frequent co-authors are Sanjay Sethi, MD, William Roger Auger, MD and Gregory J. Feldman, MD.
Papers5
Years published2014 to 2020
Dr. O'Brien's papers by year, 2014 to 2020
Topics Dr. O'Brien writes about most
- Administration, Inhalation
- Bronchodilator Agents
- Pulmonary Disease, Chronic Obstructive
Dr. O'Brien's most frequent co-authors
- Sanjay Sethi, MD2 shared papers
- William Roger Auger, MD1 shared paper
- Gregory J. Feldman, MD1 shared paper
Recent publications by Dr. O'Brien
Administration, InhalationBronchodilator AgentsClinical Trials, Phase III as Topic
Diagnosis, DifferentialMultiple Pulmonary NodulesPolychondritis, Relapsing
See who Dr. O'Brien researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. O'Brien works with, so you can find a warm path to the right pulmonologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gerald M. O'Brien received $35 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. O'Brien from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $35.
Companies that paid Dr. O'Brien the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gerald M. 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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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. Gerald M. 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. Gerald M. O'Brien's NPI number?
Dr. Gerald M. O'Brien's NPI number is 1215980313. It was assigned on May 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gerald M. O'Brien?
Dr. Gerald M. O'Brien is a pulmonologist in Newark, Delaware. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Gerald M. O'Brien practice?
Dr. O'Brien practices at 4745 Ogletown Stanton Rd, Newark, DE 19713-2067.
What is Dr. Gerald M. O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (302) 368-5515.
What is Dr. Gerald M. O'Brien's medical license number?
Dr. O'Brien holds Delaware license C10006061.
Has Dr. Gerald M. O'Brien received payments from drug or device companies?
CMS Open Payments shows $35 in general payments to Dr. O'Brien from 1 company from 2018 to 2018. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Gerald M. O'Brien been practicing?
Dr. O'Brien's NPI was assigned in 2006.
Does Dr. Gerald M. O'Brien do research?
Dmand AI links 5 publications to Dr. O'Brien, published from 2014 to 2020.
Who does Dr. Gerald M. O'Brien publish with?
Dr. O'Brien's most frequent co-authors are Sanjay Sethi, MD (2 shared papers), William Roger Auger, MD (1 shared paper) and Gregory J. Feldman, MD (1 shared paper).
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