ALLEN D WILLIAMS MD
NPI 1073601324
Internal Medicine in Rockford, IL

Q: What is Allen Williams's NPI number?

The NPI number for Allen Williams is 1073601324. It was assigned to this individual provider in the NPPES registry on October 11, 2006.

Q: What is Allen 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 Allen Williams was last updated on February 18, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 October 11, 2006PECOS EnrolledAccepts Medicare Assignment

74.98/100

CMS Quality Rating

3505 N. BELL SCHOOL RD., ROCKFORD, IL 61114(779) 696-0300 Get Directions Write a Review

NPPES record last updated: February 18, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Feb 18, 2021, Oct 7, 2019, Jul 23, 2018 (3 updates tracked since 2018).

On this page

About Allen D Williams Md NPPES

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

ALLEN D WILLIAMS MD (NPI 1073601324) is an individual internal medicine provider in Rockford, Illinois, licensed in Illinois (036103011) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Uw Health, and is a graduate of Loyola University Of Chicago, Stritch School Of Medicine (1998).

NPPES Registry Identity

NPI1073601324

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameALLEN D WILLIAMSCredential: MD

Location Address3505 N. BELL SCHOOL RD.Rockford, IL 61114

Mailing AddressPo Box 78866Milwaukee, WI 53278-8866 · (779) 696-7150

Phone(779) 696-0300

Sole ProprietorNo

Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 1998

Enumeration DateOctober 11, 2006

Last NPPES UpdateFebruary 18, 20213 updates tracked since enumeration

NPPES CertifiedFebruary 18, 2021

✔ NPI 1073601324 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in IL · 036103011

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.

3505 N. BELL SCHOOL RD., Rockford, IL 61114

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Other Identifiers 1

Medicaid036103011IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Aspirus Health Plan, Quartz.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

Allen D 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 ID446357792

PECOS Enrollment IDI20100123000174

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 13

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.

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.

533 services303 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

459 services280 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

80 services80 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

73 services73 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.

66 services63 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.

44 services42 patients

Screening 3d breast mammography 77063

Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.

40 services40 patients

Screening mammography 77067

Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.

40 services40 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.

37 services36 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

29 services26 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

28 services28 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.

22 services22 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Uw Health

Acute Care Hospitals · Rockford, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140228

Location1401 East State StreetRockford, IL 61104 · Winnebago County

Emergency services Birthing friendly

Saint Anthony Medical Center

Acute Care Hospitals · Rockford, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140233

Location5666 East State StreetRockford, IL 61108 · Winnebago County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61114 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

$127.46 typical visit price

range $54.80 – $168.44

Typical copayment $31.86 (range $13.70 – $42.11)

Most-billed visit code 99204

Established Patient

$97.25 typical visit price

range $17.16 – $136.56

Typical copayment $24.31 (range $4.29 – $34.14)

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.

74.98/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

79.92

Promoting Interoperability

Improvement Activities

Cost

55.01

Referred Medical Equipment & Supplies CMS DME claims 14

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

32 suppliers116 claims310 services$5.27 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

20 suppliers51 claims70 services$0.93 avg. paid by Medicare

Male external catheter, with or without adhesive, disposable, each A4349

DME-Medical/Surgical Supplies · category DA000N

1 supplier11 claims385 services$1.94 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

3 suppliers23 claims23 services$33.91 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

2 suppliers15 claims15 services$77.37 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

2 suppliers15 claims45 services$27.43 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 4

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

SRIVANI SRIDHAR MD

Family Medicine

3505 N. BELL SCHOOL RD.
ROCKFORD, IL 61114

Winnebago County (779) 696-0300

MS. LEE SESSLAR MD

Obstetrics & Gynecology

3505 N. BELL SCHOOL RD.
ROCKFORD, IL 61114

Winnebago County (779) 696-0300

DR. JOSE ALBERTO B SALAZAR M.D.

Internal Medicine

3505 N. BELL SCHOOL RD.
ROCKFORD, IL 61114

Winnebago County (779) 696-0300

HARNEET GAHLEY M.D.

Family Medicine (Hospice and Palliative Medicine)

3505 N. BELL SCHOOL RD.
ROCKFORD, IL 61114

Winnebago County (779) 696-0300

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 Allen Williams's NPI number?

The NPI number for Allen Williams is 1073601324. It was assigned to this individual provider in the NPPES registry on October 11, 2006.

Where is Allen Williams located?

Allen Williams practices at 3505 N. Bell School Rd., Rockford, IL 61114. The listed phone number is (779) 696-0300.

What is Allen Williams's specialty?

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

Is Allen Williams enrolled in Medicare?

Yes. Allen 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.

What insurance does Allen Williams accept?

Health plans from Aspirus Health Plan and Quartz list Allen 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 Allen Williams affiliated with any hospitals?

According to CMS data, Allen Williams is affiliated with Uw Health and Saint Anthony Medical Center.

When was this NPI record last updated?

The NPPES record for Allen Williams was last updated on February 18, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.