Dr. Paul Edward O'Brien, MD
- Medicare services, 2024
- 422
- Medicare patients, 2024
- 218
- Part D claims, 2024
- 882
- Publications
- 74
- Clinical trials
- 8
- Practice address
- 171 Ashley Ave, Charleston, SC 29425
- Practice phone
- Call (843) 792-1414
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
MUSC University Hospital
Charleston, South Carolina
Find Dr. 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. Paul Edward O'Brien is a medical oncologist in Charleston, South Carolina
Dr. O'Brien practices at MUSC University Hospital in Charleston, South Carolina.
Dr. O'Brien's NPI, 1902914864, was assigned on August 29, 2006. Dr. O'Brien graduated from Northwestern University Feinberg Medical School in 1996. Dr. O'Brien holds South Carolina license 28587.
- NPI
- 1902914864NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860401858
- NPI enumeration date
- August 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (843) 792-1414
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Paul Edward O'Brien practices at MUSC University Hospital in Charleston, South Carolina
Dr. O'Brien's primary practice is MUSC University Hospital, at 171 Ashley Ave, Charleston, SC 29425 in Charleston County. The practice phone is (843) 792-1414.
- MUSC University Hospital171 Ashley Ave, Charleston, SC 29425 · Charleston CountyPhone(843) 792-1414
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Paul Edward O'Brien is affiliated with 6 sites of care and 1 medical group
Dr. O'Brien's primary practice is MUSC University Hospital in Charleston, South Carolina. Dr. O'Brien is also affiliated with MUSC Health University Medical Center. The medical group on file is MUSC Health. Dmand AI also links Dr. O'Brien to 2 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Paul Edward O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MUSC University Hospital | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Paul Edward O'Brien is one of 31 medical oncologists in South Carolina
Medical oncology is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. O'Brien is licensed in South Carolina.
Specialties and state licenses
- Medical oncology, South CarolinaPrimary
Medical oncologists near Dr. O'Brien
Counts of medical oncologists 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. Paul Edward O'Brien billed Medicare for 422 services in 2024
CMS data shows 422 Medicare services from Dr. O'Brien across 6 procedure codes in 2024, for 218 Medicare patients. Medicare paid $31,281 for them.
Dr. O'Brien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4782024: 42212%
- Tests and treatments
- 2023: 112024: 0100%
- Other services
- 2023: 362024: 0100%
Where Dr. O'Brien's Medicare services took place, 2024
- In an office6415%
- In a facility35885%
Dr. O'Brien compared with the South Carolina median for medical oncologists, 2024
- Dr. O'Brien
- South Carolina median
- Medicare services
- 422vs 71041% below
- Medicare patients
- 218vs 24712% below
- Part D claims
- 701vs 47448% above
Medians across 30 medical oncologists in South Carolina with Dmand AI profiles that report each measure.
Dr. O'Brien's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Paul Edward O'Brien treated 218 Medicare patients in 2024, average age 73
CMS counts 218 Medicare patients who saw Dr. O'Brien in 2024. The largest group is 65 to 74, with 118 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 7% are also on Medicaid. Their average risk score is 2.35, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 68, with 47% women.
Dr. O'Brien's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. O'Brien's Medicare patients by sex, 2024
- Women10950%
- Men10950%
Chronic conditions among Dr. O'Brien's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Cancer50%
- Arthritis40%
- Diabetes38%
- Chronic kidney disease30%
- Ischemic heart disease27%
- Anxiety25%
Share of Medicare patients with each condition. A patient can have several.
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 68
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Paul Edward O'Brien wrote 882 Medicare Part D claims in 2024
In 2024, Dr. O'Brien wrote 882 Medicare Part D claims for 159 patients. 70% of them were for generic drugs. CMS names the drug for 701 of them, across 21 drugs with 11 or more claims each, at $1,283,395 in total drug cost. In 2023, CMS named 675 claims across 20 drugs.
Dr. O'Brien's Part D claims by kind of drug, 2024
- Generic619 claims70%
- Brand-name and other263 claims30%
Dr. 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. O'Brien's Part D claims, 2024
- Opioids12%104 of 882 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: 6752024: 7014%
Drugs named by CMS: 21 in 2024, 20 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
Dr. Paul Edward O'Brien offers telehealth to Medicare patients
Dr. O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. O'Brien as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Paul Edward O'Brien has 74 publications on record
Dmand AI links 74 papers to Dr. O'Brien, published from 2011 to 2024. 2012 was the busiest year, with 4. The most frequent topics are Weight Loss, Gastroplasty and Laparoscopy. Dr. O'Brien has published most often in Obes Surg. Dr. O'Brien's most frequent co-authors are Geraldine Ooi, Uzair Bashir Chaudhary, MD and Lori J. Wirth, MD.
Dr. O'Brien's papers by year, 2012 to 2024
Topics Dr. O'Brien writes about most
- Weight Loss
- Gastroplasty
- Laparoscopy
- Obesity, Morbid
- Obesity
- Bariatric Surgery
- Australia
- Body Mass Index
Dr. O'Brien's most frequent co-authors
- Geraldine Ooi9 shared papers
- Uzair Bashir Chaudhary, MD2 shared papers
- Lori J. Wirth, MD2 shared papers
Recent publications by Dr. O'Brien
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 medical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Paul Edward O'Brien has worked on 8 clinical trials
Dmand AI links Dr. O'Brien to 8 clinical trials, 4 of them phase 2 studies. 5 are still active or recruiting. Conditions studied include Anal Canal Carcinoma, Colorectal Neoplasms, Hereditary Nonpolyposis and Head and Neck Neoplasms. Alliance for Clinical Trials in Oncology sponsors the most, 4.
Clinical trials with Dr. O'Brien by phase
- NonePhase 1: no trials
- 4Phase 2: 4 trials
- 1Phase 2/3: 1 trial
- 3Phase 3: 3 trials
- NonePhase 4: no trials
Conditions in Dr. O'Brien's trials
- Anal Canal Carcinoma
- Colorectal Neoplasms, Hereditary Nonpolyposis
- Head and Neck Neoplasms
- Laryngeal Neoplasms
- Rectal Diseases
Investigators on the most trials with Dr. O'Brien
Recent clinical trials with Dr. O'Brien
Phase II Investigation of Adjuvant Combined Cisplatin and Radiation With Pembrolizumab in Resected Head and Neck Squamous Cell Carcinoma (opens in a new tab)
A Phase II Study of Enzalutamide (NSC# 766085) for Patients With Androgen Receptor Positive Salivary Cancers (opens in a new tab)
Duloxetine to Prevent Oxaliplatin-Induced Peripheral Neuropathy in Patients with Stage II-III Colorectal Cancer (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Paul Edward O'Brien received $30 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. O'Brien from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $30.
Companies that paid Dr. O'Brien the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Paul Edward O'Brien graduated from Northwestern University Feinberg Medical School
Dr. O'Brien graduated from Northwestern University Feinberg Medical School in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Paul Edward 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 DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Paul Edward 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. Paul Edward O'Brien's NPI number?
Dr. Paul Edward O'Brien's NPI number is 1902914864. It was assigned on August 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Paul Edward O'Brien?
Dr. Paul Edward O'Brien is a medical oncologist in Charleston, South Carolina. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. Paul Edward O'Brien practice?
Dr. O'Brien practices at 171 Ashley Ave, Charleston, SC 29425. Dr. O'Brien's primary practice is MUSC University Hospital in Charleston, South Carolina. Dmand AI also links Dr. O'Brien to 2 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. Paul Edward O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (843) 792-1414.
What is Dr. Paul Edward O'Brien's medical license number?
Dr. O'Brien holds South Carolina license 28587.
Which hospitals is Dr. Paul Edward O'Brien affiliated with?
Dr. O'Brien is affiliated with MUSC Health University Medical Center. Dmand AI links Dr. O'Brien to 2 more hospitals.
What medical group is Dr. Paul Edward O'Brien part of?
Dr. O'Brien is linked to MUSC Health.
Does Dr. Paul Edward O'Brien accept Medicare?
Yes. CMS data shows Dr. O'Brien billed Medicare for 422 services in 2024, and Dr. O'Brien accepts Medicare assignment.
Does Dr. Paul Edward O'Brien offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. O'Brien as offering telehealth services.
How many Medicare patients does Dr. Paul Edward O'Brien see?
CMS counts 218 Medicare patients who saw Dr. O'Brien in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
What services does Dr. Paul Edward O'Brien bill to Medicare?
In 2024, Dr. O'Brien's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99205) and office visit, established patient (99213).
Where did Dr. Paul Edward O'Brien go to medical school?
Dr. O'Brien graduated from Northwestern University Feinberg Medical School in 1996.
What drugs does Dr. Paul Edward O'Brien prescribe most?
In 2024 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Ondansetron HCl, Creon and Oxycodone HCl.
Has Dr. Paul Edward O'Brien received payments from drug or device companies?
CMS Open Payments shows $30 in general payments to Dr. O'Brien from 1 company from 2025 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Paul Edward O'Brien been practicing?
Dr. O'Brien graduated from medical school in 1996, 30 years ago.
Does Dr. Paul Edward O'Brien do research?
Dmand AI links 74 publications to Dr. O'Brien, published from 2011 to 2024. Dr. O'Brien has worked on 8 clinical trials.
Who does Dr. Paul Edward O'Brien publish with?
Dr. O'Brien's most frequent co-authors are Geraldine Ooi (9 shared papers), Uzair Bashir Chaudhary, MD (2 shared papers) and Lori J. Wirth, MD (2 shared papers).
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