DR. JOHN CLYDE WILLIAMS IV M.D.
NPI 1841467198
Hospitalist in Austell, GA

Active since May 14, 2008PECOS EnrolledAccepts Medicare Assignment
1664 MULKEY RD, AUSTELL, GA 30106(770) 422-1372 Get Directions Write a Review

NPPES record last updated: May 25, 2023. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: May 25, 2023, Jul 15, 2021, May 22, 2020 and 1 more (4 updates tracked since 2020).

About Dr. John Clyde Williams Iv M.d. NPPES

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

DR. JOHN CLYDE WILLIAMS IV M.D. (NPI 1841467198) is an individual hospitalist provider in Austell, Georgia, licensed in Louisiana (207952) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS, is affiliated with Wellstar Kennestone Regional Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1841467198
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameDR. JOHN CLYDE WILLIAMS IVCredential: M.D.
Location Address1664 MULKEY RDAustell, GA 30106-1114
Mailing Address1664 Mulkey RdAustell, GA 30106-1114 · (770) 422-1372
Sole ProprietorNo
Medical School CMSLouisiana State University School Of Medicine In ShreveportGraduated 2006
Enumeration DateMay 14, 2008
Last NPPES UpdateMay 25, 20234 updates tracked since enumeration
NPPES CertifiedMay 25, 2023
NPI 1841467198 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License Licensed in LA · 207952
Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License E-6744 (AR)
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 81809 (GA)
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License MD.31678 (AL), 81809 (GA)
1664 MULKEY RD, Austell, GA 30106

Secondary Practice Locations 2

Location 14500 Hospital Blvd Ste 310Roswell, GA 30076 · Phone (770) 410-4366
Location 2309 Jackson StMonroe, LA 71201-7407 · Phone (318) 966-4541

Accepted 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. John Clyde Williams Iv 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 ID4385813401
PECOS Enrollment IDI20200320002303
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.

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Durable Medical Equipment

  • DME-Oxygen and Supplies (DC000N)

    Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing (HCPCS:E0431)

    4 DME suppliers used 31 Medicare Claims 31 Services Paid

  • DME-Oxygen and Supplies (DC000N)

    Portable oxygen contents, gaseous, 1 month's supply = 1 unit (HCPCS:E0443)

    1 DME suppliers used 11 Medicare Claims 11 Services Paid

  • DME-Other DME (DE005N)

    Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) (HCPCS:E0466)

    3 DME suppliers used 60 Medicare Claims 60 Services Paid

  • DME-Other DME (DE000N)

    Nebulizer, with compressor (HCPCS:E0570)

    3 DME suppliers used 36 Medicare Claims 36 Services Paid

  • DME-Other DME (DE001N)

    Continuous positive airway pressure (cpap) device (HCPCS:E0601)

    3 DME suppliers used 20 Medicare Claims 20 Services Paid

  • DME-Oxygen and Supplies (DC002N)

    Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate (HCPCS:E1390)

    9 DME suppliers used 94 Medicare Claims 94 Services Paid

  • DME-Oxygen and Supplies (DC002N)

    Portable oxygen concentrator, rental (HCPCS:E1392)

    5 DME suppliers used 62 Medicare Claims 62 Services Paid

  • DME-Oxygen and Supplies (DC000N)

    Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing (HCPCS:K0738)

    1 DME suppliers used 11 Medicare Claims 11 Services Paid

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Critical care, first 30-74 minutes

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.

This service was performed 62 times for 40 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

This service was performed 14 times for 14 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 46 times for 35 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 86 times for 55 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes

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.

This service was performed 28 times for 28 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

This service was performed 23 times for 23 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes

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.

This service was performed 42 times for 36 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes

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.

This service was performed 149 times for 80 patients

Test for exercise-induced lung stress

An exercise-induced lung stress test assesses how your lungs respond to physical activity. During the test, you'll exercise on a treadmill or stationary bike while your heart rate, breathing, blood pressure, and oxygen levels are monitored. This helps identify any abnormal lung responses to exercise.

This service was performed 16 times for 15 patients

Test to determine lung volumes using sensors

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

This service was performed 14 times for 14 patients

Test to examine how well the lungs exchange gases

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

This service was performed 17 times for 17 patients

Test to measure expiratory airflow and volume changes before and after medication administration

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

This service was performed 14 times for 14 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $32.66 for a new patient copayment and $25.05 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 30106 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $130.64
  • Minimum New Patient Price $56.84
  • Maximum New Patient Price $172.43
  • Average New Patient Copayment $32.66
  • Minimum New Patient Copayment $14.21
  • Maximum New Patient Copayment $43.1

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $100.2
  • Minimum Established Patient Price $18.22
  • Maximum Established Patient Price $140.4
  • Average Established Patient Copayment $25.05
  • Minimum Established Patient Copayment $4.55
  • Maximum Established Patient Copayment $35.1

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. John Williams is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
WELLSTAR KENNESTONE REGIONAL MEDICAL CENTER677 CHURCH STREET
MARIETTA, GA 30060
(770) 793-5000Acute Care Hospitals
WELLSTAR COBB MEDICAL CENTER3950 AUSTELL RD
AUSTELL, GA 30106
(770) 732-4000Acute Care Hospitals
WELLSTAR DOUGLAS MEDICAL CENTER8954 HOSPITAL DRIVE
DOUGLASVILLE, GA 30134
(770) 949-1500Acute Care Hospitals

Other Providers at the Same Location


The following 11 providers are registered at the same or a nearby location.

Pediatrics (Adolescent Medicine)
1664 MULKEY RD
AUSTELL, GA 30106
Pediatrics
1664 MULKEY RD
AUSTELL, GA 30106
Internal Medicine (Critical Care Medicine)
1664 MULKEY RD
AUSTELL, GA 30106
Internal Medicine (Pulmonary Disease)
1664 MULKEY RD
AUSTELL, GA 30106
Internal Medicine (Pulmonary Disease)
1664 MULKEY RD
AUSTELL, GA 30106
Internal Medicine (Pulmonary Disease)
1664 MULKEY RD
AUSTELL, GA 30106
Internal Medicine (Pulmonary Disease)
1664 MULKEY RD
AUSTELL, GA 30106
Physician Assistant (Medical)
1664 MULKEY RD
AUSTELL, GA 30106
Psychiatry & Neurology (Sleep Medicine)
1664 MULKEY RD
AUSTELL, GA 30106
Internal Medicine (Pulmonary Disease)
1664 MULKEY RD
AUSTELL, GA 30106
Family Medicine (Sleep Medicine)
1664 MULKEY RD
AUSTELL, GA 30106

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1841467198, enumerated as an "individual" on May 14, 2008.

The provider is located at 1664 MULKEY RD AUSTELL, GA 30106 and the phone number is (770) 422-1372.

Hospitalist with taxonomy code 208M00000X.

The provider might be accepting Accepts: Alliant Health Plans, Inc. and HMO Louisiana. Please consult your insurance carrier or call the provider to verify.

John Williams is affiliated with: WELLSTAR KENNESTONE REGIONAL MEDICAL CENTER, WELLSTAR COBB MEDICAL CENTER and WELLSTAR DOUGLAS MEDICAL CENTER.