Chelsea O'Brien, NP
Acute Care Nurse Practitioner · Greenville, SC
Chelsea O'Brien, NP is an acute care nurse practitioner with a practice address in Greenville, South Carolina, and NPI 1245942002, issued on Dec 22, 2022. Check the license (South Carolina 26691, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Chelsea O'Brien
- Credential
- NP
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License number
- 26691 SC
Self-reported in NPPES; status is on the state search - Practice location
- 104 Innovation Dr, Greenville, SC 29607
- Phone
- (864) 603-6300
- Enumerated
- Dec 22, 2022
- Record last updated
- Dec 22, 2022
- Medicare enrollment
- Enrolled (PECOS I20230425002906); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest acute care nurse practitioner records → All 465 in South Carolina → Look up another NPI →
Also registered at 104 Innovation Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sarah Loudermilk, APRNFamily Nurse Practitioner1770049009
- Kate McClellanFamily Nurse Practitioner1366927204
- Lillian Nicks, FNPFamily Nurse Practitioner1558641670
Verify Chelsea 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 26691Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average acute care nurse practitioner in 2024
607 Medicare Part D claims for 222 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 17 claims were for opioids.
Most prescribed
- Anastrozole67 claims
- Letrozole42 claims
- Ondansetron Hcl35 claims
- Potassium Chloride25 claims
- Lidocaine-Prilocaine23 claims
- Exemestane22 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.
Industry payments in 2024: $284.53
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,984 providers of this specialty with any payment received $647.94 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bon Secours Medical Group Greenville Specialty Care LLCGreenville, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chelsea O'Brien among 465 acute care nurse practitioner records in South Carolina
Chelsea O'Brien, NP is one of 465 acute care nurse practitioner records with a practice address in South Carolina. 83% 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 77% of them.
- NPI issued2022 · 77% of these records are older, 17% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2022 · median 2018 among the 344 with a school on file
- Record last updated2022 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Acute Care Nurse Practitioner providers in South Carolina
There are 465 acute care nurse practitioner records in South Carolina.
All 465 in South Carolina → Every provider in Greenville → Acute Care Nurse Practitioner nationwide →
The 8 acute care nurse practitioner records with the nearest ZIP codes
- Alana CoatsGreenville, SC 296071366393217
- Jeffrey CobbGreenville, SC 296071376028167
- Stelina Jennings, NPGreenville, SC 296071679928428
- Gina Masters, APRNGreenville, SC 296071699814137
- Laura MillerGreenville, SC 296071336924216
- Ricki Shaw, ACNPGreenville, SC 296071417766973
- Margret CallahanGreenville, SC 296051144195892
- Lea CallcottGreenville, SC 296051912874157
Common questions
What is Chelsea O'Brien, NP's NPI number?
Chelsea O'Brien, NP's National Provider Identifier (NPI) is 1245942002, issued on Dec 22, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Chelsea O'Brien, NP located?
The NPPES record lists a practice address at 104 Innovation Dr, Greenville, SC, 29607. Phone: (864) 603-6300. Providers update this record themselves, so call before visiting.
How can I verify Chelsea O'Brien, NP's license?
NPPES lists South Carolina license number 26691, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Chelsea O'Brien, NP prescribe under Medicare Part D?
In 2024, Chelsea O'Brien, NP had 607 Medicare Part D claims for 222 beneficiaries; the average among acute care nurse practitioner prescribers was 594. 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.