NPPES file of Aug 9, 2026

Katelyn Watson Zerbst, APRN

Psychiatric/Mental Health Nurse Practitioner · Mount Pleasant, SC

Katelyn Watson Zerbst, APRN is a psychiatric/mental health nurse practitioner with a practice address in Mount Pleasant, South Carolina, and NPI 1396490843, issued on Feb 14, 2022. Check the license (South Carolina 26440, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1396490843
Name
Katelyn Watson Zerbst
Credential
APRN
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
26440 SC
Self-reported in NPPES; status is on the state search
Practice location
710 Johnnie Dodds Blvd Ste 200, Mount Pleasant, SC 29464
Phone
(843) 800-1303
Enumerated
Feb 14, 2022
Record last updated
Jan 15, 2026
Fax
(888) 316-7716
Medicare enrollment
Enrolled (PECOS I20220906000427); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 710 Johnnie Dodds Blvd Ste 200

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brittany Albright, MD, MPHPsychiatry Physician1265796726
  2. Michael Becker, LPCCounselor1144865486
  3. Amanda Blue, APRNPsychiatric/Mental Health Nurse Practitioner1770009565
  4. Katarzyna Ciszewski, MS, LPCProfessional Counselor1891271292
  5. Layne Gritti, DOPsychiatry Physician1710428925
  6. Rebecca HamiltonMental Health Counselor1639826860

Verify Katelyn Watson Zerbst in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich South Carolina board licenses this profession
    Search for license 26440
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the South Carolina license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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97% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

24 Medicare Part D claims for 16 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.

  1. Katelyn Zerbst24
  2. Specialty average906

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: $1,006.30

42 payments; by number, the most common kind was food and beverage; the largest payer was Corium, LLC. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katelyn Zerbst$1,006.30
  2. Specialty average$1,027.77

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

  1. Sweetgrass Psychiatry LLCMount Pleasant, SC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katelyn Watson Zerbst among 540 psychiatric/mental health nurse practitioner records in South Carolina

Katelyn Watson Zerbst, APRN is one of 540 psychiatric/mental health nurse practitioner records with a practice address in South Carolina. 69% 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 56% of them.

  • NPI issued2022 · 56% of these records are older, 37% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2022 · median 2021 among the 322 with a school on file
  • Record last updated2026 · 19% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

11 psychiatric/mental health nurse practitioner records list a practice address in Mount Pleasant

They are 11 of the 1,227 NPPES records with a practice address in Mount Pleasant, and 540 psychiatric/mental health nurse practitioner records in South Carolina.

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Aaron Aven, APRNMt Pleasant, SC 294641295624542
  2. Carole Bennett, PH.D,RN,CSMt Pleasant, SC 294641437163185
  3. Amanda Blue, APRNMount Pleasant, SC 294641770009565
  4. Sara CousinsMount Pleasant, SC 294641184435240
  5. Mallory Darnell, PMHNP-BCMount Pleasant, SC 294641326522194
  6. Lauren JarboeMount Pleasant, SC 294641447919808
  7. Abby Kent, NPMount Pleasant, SC 294641043999543
  8. Casey Lee, PMHNPMount Pleasant, SC 294641013671171

Common questions

What is Katelyn Watson Zerbst, APRN's NPI number?

Katelyn Watson Zerbst, APRN's National Provider Identifier (NPI) is 1396490843, issued on Feb 14, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Katelyn Watson Zerbst, APRN located?

The NPPES record lists a practice address at 710 Johnnie Dodds Blvd Ste 200, Mount Pleasant, SC, 29464. Phone: (843) 800-1303. Providers update this record themselves, so call before visiting.

How can I verify Katelyn Watson Zerbst, APRN's license?

NPPES lists South Carolina license number 26440, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.

How much does Katelyn Watson Zerbst, APRN prescribe under Medicare Part D?

In 2024, Katelyn Watson Zerbst, APRN had 24 Medicare Part D claims for 16 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.