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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. WILLIAM STIRLING HARPER MD
NPI 1245677244
Emergency Medicine in North Charleston, SC

Active since May 30, 2013PECOS Enrolled
9330 MEDICAL PLAZA DR, NORTH CHARLESTON, SC 29406(843) 797-7000 Get Directions Write a Review

NPPES record last updated: July 26, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 26, 2026, Feb 23, 2016 (2 updates tracked since 2016).

About Dr. William Stirling Harper Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM STIRLING HARPER MD (NPI 1245677244) is an individual emergency medicine provider in North Charleston, South Carolina, licensed in South Carolina (39145) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS, is affiliated with Trident Medical Center, and is a graduate of Louisiana State University School Of Medicine In Shreveport (2013).

NPPES Registry Identity

NPI1245677244
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. WILLIAM STIRLING HARPERCredential: MD
Location Address9330 MEDICAL PLAZA DRNorth Charleston, SC 29406-9104
Mailing Address9330 Medical Plaza DrNorth Charleston, SC 29406-9104
Phone(843) 797-7000
Sole ProprietorYes
Medical School CMSLouisiana State University School Of Medicine In ShreveportGraduated 2013
Enumeration DateMay 30, 2013
Last NPPES UpdateJuly 26, 20262 updates tracked since enumeration
NPPES CertifiedJuly 26, 2026
✔ NPI 1245677244 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in SC · 39145✔ Licensed in NC · 2015-02117
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
9330 MEDICAL PLAZA DR, North Charleston, SC 29406
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Stirling Harper Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9032430822
PECOS Enrollment IDI20160721001922
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
175 services172 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
136 services131 patients
Removal of skin and tissue, 20.0 sq cm or less 11042
This procedure involves the surgical removal of skin and tissue, up to 20.0 square cm in size. It's often performed to treat conditions like skin cancer or to remove moles, warts, and other skin lesions. The area is numbed and the unwanted tissue is carefully cut out.
72 services50 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
47 services47 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
39 services39 patients
Application of vein wound compression bandages on lower leg, ankle, and foot 29581
Compression bandages are applied to your lower leg, ankle, and foot to promote healing of vein wounds. The bandages apply pressure to improve blood flow, reduce swelling, and accelerate wound healing. It's a safe, non-invasive treatment.
26 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Trident Medical Center

Acute Care Hospitals · Charleston, SC
3/5 CMS rating
OwnershipProprietary
CMS Certification Number420079
Location9330 Medical Plaza DrCharleston, SC 29406 · Charleston County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29406 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$83.18 typical visit price
range $53.57 – $163.84
Typical copayment $20.79 (range $13.39 – $40.96)
Most-billed visit code 99203
Established Patient
$95.12 typical visit price
range $16.96 – $133.52
Typical copayment $23.78 (range $4.24 – $33.38)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. RICHARD DALE BRINSON MSN, APRN, NP-C
Nurse Practitioner (Acute Care)
9330 MEDICAL PLAZA DR
NORTH CHARLESTON, SC 29406
Charleston County (843) 847-4595
DR. DARRYL EDWARD MCFARLAND MD
Internal Medicine (Critical Care Medicine)
9330 MEDICAL PLAZA DR
CHARLESTON, SC 29406
Charleston County (843) 797-7000
ROSSEN IVANOV KIRKOV MD
Emergency Medicine
9330 MEDICAL PLAZA DR
CHARLESTON, SC 29406
Charleston County (843) 797-7000
MORGAN ELISABETH HUNT
Student in an Organized Health Care Education/Training Program
9330 MEDICAL PLAZA DR
NORTH CHARLESTON, SC 29406
Charleston County (843) 797-7000
DR. ALLISON LUNDY MCCRAE MD
Surgery
9330 MEDICAL PLAZA DR
NORTH CHARLESTON, SC 29406
Charleston County (843) 797-7000
DR. SARAH MARESCA PT, DPT
Physical Therapist
9330 MEDICAL PLAZA DR
NORTH CHARLESTON, SC 29406
Charleston County (843) 797-7000
DR. VINCENT PAUL GRZYWACZ II MD
Radiology (Radiation Oncology)
9330 MEDICAL PLAZA DR
CHARLESTON, SC 29406
Charleston County (843) 847-4571
MISBHA ANJUM MD
Student in an Organized Health Care Education/Training Program
9330 MEDICAL PLAZA DR
CHARLESTON, SC 29406
Charleston County (843) 847-5620

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Harper's NPI number?

The NPI number for William Harper is 1245677244. It was assigned to this individual provider in the NPPES registry on May 30, 2013.

Where is William Harper located?

William Harper practices at 9330 Medical Plaza Dr, North Charleston, SC 29406. The listed phone number is (843) 797-7000.

What is William Harper's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is William Harper enrolled in Medicare?

Yes. William Harper is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does William Harper accept?

Health plans from Ambetter from Absolute Total Care, Ambetter of North Carolina and BlueCross BlueShield of South Carolina list William Harper as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Harper affiliated with any hospitals?

According to CMS data, William Harper is affiliated with Trident Medical Center.

When was this NPI record last updated?

The NPPES record for William Harper was last updated on July 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.