DR. JOHN DAVID WILLIAMSON M.D.
NPI 1043308661
Family Medicine in Charleston, SC

Active since October 10, 2006PECOS EnrolledAccepts Medicare Assignment
73.24/100
CMS Quality Rating
316 CALHOUN ST, CHARLESTON, SC 29401(843) 402-1000 Get Directions Write a Review

NPPES record last updated: July 9, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. John David Williamson M.d. NPPES

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

DR. JOHN DAVID WILLIAMSON M.D. (NPI 1043308661) is an individual family medicine provider in Charleston, South Carolina, licensed in South Carolina (29084) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Bon Secours-st Francis Xavier Hospital, and maintains a secondary practice location in Memphis.

NPPES Registry Identity

NPI1043308661
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. JOHN DAVID WILLIAMSONCredential: M.D.
Location Address316 CALHOUN STCharleston, SC 29401-1113
Mailing Address1985 Planters DrCharleston, SC 29414-6255
Sole ProprietorNo
Medical School CMSMedical University Of South Carolina College Of MedicineGraduated 2006
Enumeration DateOctober 10, 2006
Last NPPES UpdateJuly 9, 2022
NPPES CertifiedJuly 9, 2022
NPI 1043308661 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses Licensed in SC · 29084 Licensed in TN · 44600
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
316 CALHOUN ST, Charleston, SC 29401

Secondary Practice Location 1

Location 14095 AMERICAN WAY 1, Suite 1MEMPHIS, TN 38118-8339 · Phone (901) 271-9500 · Fax (901) 271-9501

Other Identifiers 1

Medicaid1512962TN

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. John David Williamson M.d. 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 ID6204986565
PECOS Enrollment IDI20200306001486
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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
443 services196 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
184 services175 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
101 services100 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
56 services52 patients

Hospital Affiliations CMS Care Compare 3

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

Bon Secours-St Francis Xavier Hospital

Acute Care Hospitals · Charleston, SC
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number420065
Location2095 Henry Tecklenburg DriveCharleston, SC 29414 · Charleston County
Emergency services Birthing friendly

Roper Hospital

Acute Care Hospitals · Charleston, SC
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number420087
Location316 Calhoun StCharleston, SC 29401 · Charleston County
Emergency services

Roper St Francis Hospital-Berkeley Inc

Acute Care Hospitals · Summerville, SC
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number420110
Location300 Callen BlvdSummerville, SC 29486 · Dorchester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29401 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

73.24/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality73.04
Cost59.51

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers18 claims18 services$14.05 avg. paid by Medicare
Patient lift, hydraulic or mechanical, includes any seat, sling, strap(s) or pad(s) E0630
DME-Other DME · category DE000N
1 supplier11 claims11 services$40.65 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers18 claims18 services$61.01 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

Physician Assistant
316 CALHOUN ST
CHARLESTON, SC 29401
Physician Assistant
316 CALHOUN ST
CHARLESTON, SC 29401
Radiology (Diagnostic Radiology)
316 CALHOUN ST
CHARLESTON, SC 29401
Radiology (Diagnostic Radiology)
316 CALHOUN ST
CHARLESTON, SC 29401
Nurse Practitioner (Neonatal, Critical Care)
316 CALHOUN ST
CHARLESTON, SC 29401
Internal Medicine
316 CALHOUN ST
CHARLESTON, SC 29401
Nurse Practitioner (Acute Care)
316 CALHOUN ST
CHARLESTON, SC 29401
Nurse Practitioner (Acute Care)
316 CALHOUN ST
CHARLESTON, SC 29401

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 John Williamson's NPI number?

The NPI number for John Williamson is 1043308661. It was assigned to this individual provider in the NPPES registry on October 10, 2006.

Where is John Williamson located?

John Williamson practices at 316 Calhoun St, Charleston, SC 29401. The listed phone number is (843) 402-1000.

What is John Williamson's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is John Williamson enrolled in Medicare?

Yes. John Williamson 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.

Is John Williamson affiliated with any hospitals?

According to CMS data, John Williamson is affiliated with Bon Secours-St Francis Xavier Hospital, Roper Hospital and Roper St Francis Hospital-Berkeley Inc.

When was this NPI record last updated?

The NPPES record for John Williamson was last updated on July 9, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.