Erin Kosak, NP
Primary Care Nurse Practitioner · Charleston, SC
Erin Kosak, NP is a primary care nurse practitioner with a practice address in Charleston, South Carolina, and NPI 1003276676, issued on Feb 25, 2016. Check the license (South Carolina 19923, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Erin Kosak
- Credential
- NP
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License number
- 19923 SC
Self-reported in NPPES; status is on the state search - Practice location
- 109 Wappoo Creek Dr, Charleston, SC 29412
- Phone
- (843) 796-7171
- Enumerated
- Feb 25, 2016
- Record last updated
- Feb 25, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (843) 795-7171
- Medicare enrollment
- Enrolled (PECOS I20160803003073); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 158 in South Carolina → Look up another NPI →
Also registered at 109 Wappoo Creek Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Erin Kosak 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 19923Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
1,190 Medicare Part D claims for 120 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 33 claims were for opioids.
Most prescribed
- Levothyroxine Sodium65 claims
- Rosuvastatin Calcium50 claims
- Progesterone41 claims
- Amlodipine Besylate36 claims
- Liothyronine Sodium31 claims
- Montelukast Sodium31 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: $94.40
4 payments; by number, the most common kind was food and beverage; the largest payer was Axsome Therapeutics, Inc. The 4,321 providers of this specialty with any payment received $625.13 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
- Remedy Internal Medicine And Wellness Center P ACharleston, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erin Kosak among 158 primary care nurse practitioner records in South Carolina
Erin Kosak, NP is one of 158 primary care nurse practitioner records with a practice address in South Carolina. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 25% of them.
- NPI issued2016 · 25% of these records are older, 66% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2015 · median 2020 among the 95 with a school on file
- Record last updated2016 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in South Carolina
There are 158 primary care nurse practitioner records in South Carolina.
All 158 in South Carolina → Every provider in Charleston → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Jessica Pray-HolmesCharleston, SC 294121720824600
- Jessica FrazierHanahan, SC 294101154268811
- Kimberly Kinkade, APRN, FNP-CCharleston, SC 294141760617005
- Lee Bastian, APRNCharleston, SC 294071497139117
- Penelope Vachon, DNPCharleston, SC 294071326342239
- Caitlin Beaman, FNP-CCharleston, SC 294061982207320
- Toni Kropilak, FNPNorth Charleston, SC 294061598327975
- Amy Lawson, APRN, FNP-CNorth Charleston, SC 294061689435240
Common questions
What is Erin Kosak, NP's NPI number?
Erin Kosak, NP's National Provider Identifier (NPI) is 1003276676, issued on Feb 25, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Erin Kosak, NP located?
The NPPES record lists a practice address at 109 Wappoo Creek Dr, Charleston, SC, 29412. Phone: (843) 796-7171. Providers update this record themselves, so call before visiting.
How can I verify Erin Kosak, NP's license?
NPPES lists South Carolina license number 19923, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Erin Kosak, NP prescribe under Medicare Part D?
In 2024, Erin Kosak, NP had 1,190 Medicare Part D claims for 120 beneficiaries; the average among primary care nurse practitioner prescribers was 1,492. 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.