Colleen Therese O'Brien, DNP
Family Nurse Practitioner · Charleston, SC
Colleen Therese O'Brien, DNP is a family nurse practitioner with a practice address in Charleston, South Carolina, and NPI 1801508148, issued on Dec 19, 2022. Check the license (South Carolina 26846, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Colleen Therese O'Brien
- Credential
- DNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 26846 SC
Self-reported in NPPES; status is on the state search - Practice location
- 316 Calhoun St, Charleston, SC 29401
- Phone
- (843) 724-2450
- Enumerated
- Dec 19, 2022
- Record last updated
- Dec 10, 2025
- Fax
- (843) 724-2455
- Medicaid ID
- NP9092 SC
- Medicare enrollment
- Enrolled (PECOS I20230201002109); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,320 in South Carolina → Look up another NPI →
Also registered at 316 Calhoun St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Claire Andrew, MS, RDRegistered Dietitian1134970049
Verify Colleen Therese O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Carolina board licenses this profession
Search for license 26846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average family nurse practitioner in 2024
867 Medicare Part D claims for 462 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Methylprednisolone95 claims
- Fluticasone Propionate54 claims
- Amoxicillin-Clavulanate Potass53 claims
- Cephalexin41 claims
- Sulfamethoxazole-Trimethoprim39 claims
- Amoxicillin35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- 24 ON Physicians OF SC LLCCharleston, SC
- Roper Saint Francis Physicians NetworkMount Pleasant, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Colleen Therese O'Brien among 4,320 family nurse practitioner records in South Carolina
Colleen Therese O'Brien, DNP is one of 4,320 family nurse practitioner records with a practice address in South Carolina. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 76% of them.
- NPI issued2022 · 76% of these records are older, 18% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2022 · median 2018 among the 2,643 with a school on file
- Record last updated2025 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
320 family nurse practitioner records list a practice address in Charleston
They are 320 of the 10,840 NPPES records with a practice address in Charleston, and 4,320 family nurse practitioner records in South Carolina.
All 4,320 in South Carolina → Every provider in Charleston → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Patricia Corcoran, FNP-CCharleston, SC 294011134324999
- Gwen Harrison, FNPCharleston, SC 294011245322544
- Rebecca Luhrs, FNPCharleston, SC 294011528038445
- Katherine Lundy, PHD, MSN, RNCCCharleston, SC 294011578542692
- Shannon Magee, NPCharleston, SC 294011720333123
- Amy Perry, FNPCharleston, SC 294011760485957
- Diane Rackel, CFNPCharleston, SC 294011295757664
- Marcelaine Reneau, PHDCharleston, SC 294011841386364
Common questions
What is Colleen Therese O'Brien, DNP's NPI number?
Colleen Therese O'Brien, DNP's National Provider Identifier (NPI) is 1801508148, issued on Dec 19, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Colleen Therese O'Brien, DNP located?
The NPPES record lists a practice address at 316 Calhoun St, Charleston, SC, 29401. Phone: (843) 724-2450. Providers update this record themselves, so call before visiting.
How can I verify Colleen Therese O'Brien, DNP's license?
NPPES lists South Carolina license number 26846, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Colleen Therese O'Brien, DNP prescribe under Medicare Part D?
In 2024, Colleen Therese O'Brien, DNP had 867 Medicare Part D claims for 462 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.