DR. JESSICA DELOIS WILLIAMS M.D.
NPI 1366769747
Internal Medicine - Cardiovascular Disease in Kalamazoo, MI

Q: What is Jessica Williams's NPI number?

The NPI number for Jessica Williams is 1366769747. It was assigned to this individual provider in the NPPES registry on April 26, 2010.

Q: What is Jessica Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Jessica Williams was last updated on September 15, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since April 26, 2010PECOS EnrolledAccepts Medicare Assignment

1722 SHAFFER ST, KALAMAZOO, MI 49048(269) 381-3963 Get Directions Write a Review

NPPES record last updated: September 15, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 15, 2020, Mar 17, 2018, Mar 5, 2018 and 2 more (5 updates tracked since 2016).

On this page

About Dr. Jessica Delois Williams M.d. NPPES

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

DR. JESSICA DELOIS WILLIAMS M.D. (NPI 1366769747) is an individual cardiovascular disease provider in Kalamazoo, Michigan, licensed in Indiana (01079951A) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS, is affiliated with Northwest Health-la Porte, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1366769747

Entity TypeIndividualFemale

Primary Taxonomy207RC0000X

Provider Legal NameDR. JESSICA DELOIS WILLIAMSCredential: M.D.

Location Address1722 SHAFFER STKalamazoo, MI 49048-1633

Mailing Address2022 Kelle DrChesterton, IN 46304-8708 · (219) 364-3616 · Fax (219) 364-3610

Phone(269) 381-3963

Sole ProprietorNo

Medical School CMSUniversity Of Louisville School Of MedicineGraduated 2010

Enumeration DateApril 26, 2010

Last NPPES UpdateSeptember 15, 20205 updates tracked since enumeration

NPPES CertifiedSeptember 15, 2020

✔ NPI 1366769747 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in IN · 01079951A✔ Licensed in MI · 4301110960

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

1722 SHAFFER ST, Kalamazoo, MI 49048

Open in Google Maps ↗

Secondary Practice Locations 3

Location 13630 Willowcreek Rd Ste 1Portage, IN 46368-5075 · Phone (219) 364-3062 · Fax (219) 364-3229

Location 22000 Roosevelt Rd Ste 205Valparaiso, IN 46383-2802 · Phone (219) 263-7600 · Fax (219) 263-7659

Location 385 E US Highway 6 Ste 300Valparaiso, IN 46383-8948 · Phone (219) 983-6300 · Fax (219) 983-6080

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.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. Jessica Delois Williams 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 ID3072755610

PECOS Enrollment IDI20180410002392

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 Jessica Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

La Porte Clinic Company LLC

97 mi

Internal Medicine

85 E US HIGHWAY 6
Valparaiso, IN 46383

Reassigned Medicare billing, Indiana enrollment
153 clinicians in this Medicare group

NPI 1568829224 (219) 983-6300

Phoebe Gastroenterology Associates

741 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 18

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.

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.

893 services570 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.

330 services224 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

245 services239 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.

133 services57 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

111 services107 patients

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.

100 services66 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

66 services65 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

66 services66 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

61 services60 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

61 services58 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.

43 services41 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.

31 services30 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

22 services22 patients

Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional 93272

An Electrocardiogram (ECG) is a test that records the electrical activity of your heart. For up to 30 days, a device will continuously monitor your heart's rhythm, noting any symptoms. The data is sent to a healthcare professional who reviews it and provides a report on your heart health.

20 services20 patients

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

18 services15 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

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.

15 services14 patients

Electrocardiogram (ecg) 2-day continuous with review by health care professional 93227

An Electrocardiogram (ECG) is a test that checks your heart's activity. The 2-day continuous ECG records your heart's rhythm non-stop for 48 hours. It helps to detect irregularities that may not occur during a shorter test. A healthcare professional will review the results to identify any issues.

14 services14 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

13 services13 patients

Hospital Affiliations CMS Care Compare 5

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

Northwest Health-La Porte

Acute Care Hospitals · La Porte, IN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150006

Location1331 State StreetLa Porte, IN 46350 · La Porte County

Emergency services Birthing friendly

Franciscan Health Michigan City

Acute Care Hospitals · Michigan City, IN

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number150015

Location3500 Franciscan WayMichigan City, IN 46360 · La Porte County

Emergency services Birthing friendly

Lutheran Hospital Of Indiana

Acute Care Hospitals · Fort Wayne, IN

3/5 CMS rating

OwnershipProprietary

CMS Certification Number150017

Location7950 W Jefferson BlvdFort Wayne, IN 46804 · Allen County

Emergency services Birthing friendly

Northwest Health - Porter

Acute Care Hospitals · Valparaiso, IN

3/5 CMS rating

OwnershipProprietary

CMS Certification Number150035

Location85 East Us Hwy 6Valparaiso, IN 46383 · Porter County

Emergency services Birthing friendly

Northwest Health - Starke

Acute Care Hospitals · Knox, IN

OwnershipProprietary

CMS Certification Number150102

Location102 E Culver RdKnox, IN 46534 · Starke County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49048 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

$126.15 typical visit price

range $54.34 – $166.68

Typical copayment $31.53 (range $13.58 – $41.67)

Most-billed visit code 99204

Established Patient

$68.07 typical visit price

range $17.09 – $135.40

Typical copayment $17.01 (range $4.27 – $33.85)

Most-billed visit code 99213

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.

WILLIAM DYER

Psychologist

1722 SHAFFER ST
KALAMAZOO, MI 49048

Kalamazoo County (269) 226-5600

PREMIER CARDIOLOGY PC

Internal Medicine (Cardiovascular Disease)

1722 SHAFFER ST, SUITE 1
KALAMAZOO, MI 49048

Kalamazoo County (269) 381-3963

DR. JOSEPH PRANO D.O.

Internal Medicine (Cardiovascular Disease)

1722 SHAFFER ST
KALAMAZOO, MI 49048

Kalamazoo County (269) 381-3963

DR. RAMONA TAN M.D.

Psychiatry & Neurology (Psychiatry)

1722 SHAFFER ST, SUITE #3
KALAMAZOO, MI 49048

Kalamazoo County (269) 337-6373

DR. ANTHONY KING

Internal Medicine (Cardiovascular Disease)

1722 SHAFFER ST, SUITE 1
KALAMAZOO, MI 49048

Kalamazoo County (269) 381-3963

SUHAIL SHEIKH M.D.

Psychiatry & Neurology (Psychiatry)

1722 SHAFFER ST, STE 3
KALAMAZOO, MI 49048

Kalamazoo County (269) 337-6373

STEPHEN NEWMAN

Marriage & Family Therapist

1722 SHAFFER ST
KALAMAZOO, MI 49048

Kalamazoo County (269) 226-5600

FRANK S SALTIEL M.D.

Internal Medicine (Interventional Cardiology)

1722 SHAFFER ST, SUITE 1
KALAMAZOO, MI 49048

Kalamazoo County (269) 381-3963

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 Jessica Williams's NPI number?

The NPI number for Jessica Williams is 1366769747. It was assigned to this individual provider in the NPPES registry on April 26, 2010.

Where is Jessica Williams located?

Jessica Williams practices at 1722 Shaffer St, Kalamazoo, MI 49048. The listed phone number is (269) 381-3963.

What is Jessica Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Jessica Williams enrolled in Medicare?

Yes. Jessica Williams 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.

Which organizations bill Medicare for Jessica Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jessica Williams reassigns Medicare benefits to 2 organizations: La Porte Clinic Company LLC (Valparaiso, IN) and Phoebe Gastroenterology Associates (Albany, GA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jessica Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jessica Williams accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and Anthem Blue Cross and Blue Shield list Jessica Williams 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 Jessica Williams affiliated with any hospitals?

According to CMS data, Jessica Williams is affiliated with Northwest Health-La Porte, Franciscan Health Michigan City, Lutheran Hospital Of Indiana, Northwest Health - Porter and Northwest Health - Starke.

When was this NPI record last updated?

The NPPES record for Jessica Williams was last updated on September 15, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.