Paul O'Brien, MD
NPI 1902914864 · Medical Oncology Physician · Charleston, SC
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Paul O'Brien, MD is a Medical Oncology Physician provider in Charleston, SC (NPI 1902914864).
Provider details
- NPI number
- 1902914864
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 28587 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
422 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 212 | $91 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 58 | $170 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 50 | $91 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 40 | $62 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 17 | $33 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetron Hcl | 124 | 72 |
| Lipase/Protease/Amylasebrand: Creon | 85 | 33 |
| Oxycodone Hcl | 53 | 35 |
| Dexamethasone | 47 | 32 |
| Prochlorperazine Maleate | 46 | 32 |
| Apixabanbrand: Eliquis | 39 | 20 |
| Loperamide Hclbrand: Loperamide | 36 | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-29
- Last updated
- 2016-11-29
Frequently asked questions
- What is Paul O'Brien's NPI number?
- Paul O'Brien's National Provider Identifier (NPI) is 1902914864, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Paul O'Brien's specialty?
- Paul O'Brien is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Paul O'Brien located?
- Paul O'Brien's practice location on file with NPPES is 171 Ashley Ave, Charleston, SC 29425-0001.
- What is Paul O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Paul O'Brien is (843) 792-1414.
- Does Paul O'Brien accept Medicare?
- Paul O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Paul O'Brien's NPI active?
- Yes — Paul O'Brien's NPI (1902914864) is active in the NPPES registry as of the last update on 2016-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.