DR. JANSSEN JACOB WILLIAMS MD
NPI 1568548790
Internal Medicine in Mcdonough, GA

Q: What is Janssen Williams's NPI number?

The NPI number for Janssen Williams is 1568548790. It was assigned to this individual provider in the NPPES registry on October 31, 2006.

Q: What is Janssen Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Janssen Williams was last updated on March 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.

Active since October 31, 2006PECOS EnrolledAccepts Medicare Assignment

4303 JODECO RD, MCDONOUGH, GA 30253(618) 546-5464(618) 546-2648 Get Directions Write a Review

NPPES record last updated: March 26, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 26, 2025, May 10, 2024, Feb 24, 2016 (3 updates tracked since 2016).

On this page

About Dr. Janssen Jacob Williams Md NPPES

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

DR. JANSSEN JACOB WILLIAMS MD (NPI 1568548790) is an individual internal medicine provider in Mcdonough, Georgia, licensed in Georgia (075176) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Houston Healthcare, and is a graduate of University Of Nebraska College Of Medicine (1990).

NPPES Registry Identity

NPI1568548790

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. JANSSEN JACOB WILLIAMSCredential: MD

Location Address4303 JODECO RDMcdonough, GA 30253-8297

Mailing Address1000 N Allen StRobinson, IL 62454-1167 · (618) 546-5464

Phone(618) 546-5464

Fax(618) 546-2648

Sole ProprietorNo

Medical School CMSUniversity Of Nebraska College Of MedicineGraduated 1990

Enumeration DateOctober 31, 2006

Last NPPES UpdateMarch 26, 20253 updates tracked since enumeration

NPPES CertifiedMarch 26, 2025

✔ NPI 1568548790 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in GA · 075176✔ Licensed in NE · 19536✔ Licensed in IN · 01076261A

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

4303 JODECO RD, Mcdonough, GA 30253

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Oscar Health, Oscar Insurance Company.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Janssen Jacob Williams 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 ID9133279698

PECOS Enrollment IDI20160408001038

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.

Medicare Billing Reassignments

Medicare enrollment records show Janssen Williams reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Medpro Wound Care Services LLC

32 mi

Internal Medicine

432 HIGHGATE PL
Lawrenceville, GA 30046

Reassigned Medicare billing, Georgia enrollment

NPI 1316778863 (833) 796-7770

Vitality Ageless Center LLC

39 mi

Multi-Specialty

VITALITY AGELESS CENTER LLC, 1300 PEACHTREE INDUSTRIAL BLVD #1201
Suwanee, GA 30024

Reassigned Medicare billing, Georgia enrollment
8 clinicians in this Medicare group

NPI 1730657271 (770) 614-6266

Southeast Medical Group, P.C.

40 mi

Family Medicine

3905 BROOKSIDE PKWY STE 300
Alpharetta, GA 30022

Reassigned Medicare billing, Georgia enrollment
240 clinicians in this Medicare group

NPI 1235296054 (770) 442-1911

Magna Care Medical Specialists LLC

55 mi

Hospitalist

657 HEMLOCK ST, STE 220
Macon, GA 31201

Reassigned Medicare billing, Georgia enrollment
8 clinicians in this Medicare group

NPI 1487002382 (478) 741-7241

Benning Hospitalist Services, LLC

80 mi

Hospitalist

100 FRIST CT
Columbus, GA 31909

Reassigned Medicare billing, Georgia enrollment
165 clinicians in this Medicare group

NPI 1215442173 (706) 494-2100

Muscogee Hospitalist Services, LLC

84 mi

Hospitalist

710 CENTER ST
Columbus, GA 31901

Reassigned Medicare billing, Georgia enrollment
163 clinicians in this Medicare group

NPI 1639681851 (706) 571-1000

Phoebe Gastroenterology Associates

129 mi

Clinic/Center

2740 RAY KNIGHT WAY, STE 100
Albany, GA 31707

Reassigned Medicare billing, Georgia enrollment
Medicare enrollment name: Phoebe Physician Group Inc
1,118 clinicians in this Medicare group

NPI 1659627131 (229) 312-0669

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 15

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 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.

285 services86 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

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.

258 services154 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.

64 services62 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

61 services49 patients

Blood test, lipids (cholesterol and triglycerides) 80061

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

48 services46 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.

36 services36 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

30 services30 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

27 services13 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

26 services18 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

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.

22 services21 patients

Annual alcohol misuse screening, 5 to 15 minutes G0442

An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.

22 services22 patients

Annual depression screening, 5 to 15 minutes G0444

An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.

21 services21 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

19 services18 patients

Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen 87635

This is a lab test that detects the presence of COVID-19 in your body. It uses a technique to amplify the virus's genetic material, either DNA or RNA, making it easier to identify. A positive result indicates an active infection.

15 services14 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

13 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Houston Healthcare

Acute Care Hospitals · Warner Robins, GA

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number110069

Location1601 Watson BoulevardWarner Robins, GA 31093 · Houston County

Emergency services Birthing friendly

Atrium Health Navicent The Medical Center

Acute Care Hospitals · Macon, GA

1/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number110107

Location777 Hemlock StreetMacon, GA 31201 · Bibb County

Emergency services Birthing friendly

Atrium Health Navicent Peach

Critical Access Hospitals · Byron, GA

OwnershipGovernment - Hospital District or Authority

CMS Certification Number111310

Location1960 Highway 247 ConnectorByron, GA 31008 · Peach County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 30253 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

$130.64 typical visit price

range $56.84 – $172.43

Typical copayment $32.66 (range $14.21 – $43.10)

Most-billed visit code 99204

Established Patient

$100.20 typical visit price

range $18.22 – $140.40

Typical copayment $25.05 (range $4.55 – $35.10)

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.

Reported Quality Measures

Care Plan

Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…

97%259 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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

4 suppliers46 claims46 services$15.94 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

5 suppliers60 claims61 services$75.05 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

2 suppliers11 claims12 services$29.07 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 5

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

LISA NEFF BUTTERS PA-C

Physician Assistant