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DR. WILLIAM B GUYOL JR. MD
NPI 1396738019
Internal Medicine in Saint Louis, MO

Active since August 28, 2005PECOS Enrolled
1035 BELLEVUE AVE, SUITE 105, SAINT LOUIS, MO 63117(314) 646-7015(314) 646-7016 Get Directions Write a Review

NPPES record last updated: August 5, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. William B Guyol Jr. Md NPPES

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

DR. WILLIAM B GUYOL JR. MD (NPI 1396738019) is an individual internal medicine provider in Saint Louis, Missouri, licensed in Missouri (R2D06) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396738019
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM B GUYOL JR.Credential: MD
Location Address1035 BELLEVUE AVE, SUITE 105Saint Louis, MO 63117-1854
Mailing Address15 York DrSaint Louis, MO 63144-1047 · (314) 432-2121
Phone(314) 646-7015
Fax(314) 646-7016
Sole ProprietorYes
Enumeration DateAugust 28, 2005
Last NPPES UpdateAugust 5, 2013
✔ NPI 1396738019 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MO · R2D06
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.
1035 BELLEVUE AVE, Saint Louis, MO 63117
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Other Identifiers 3

Medicare UPINA10230MO
Medicaid202318913MO
Medicare PIN000002121MO

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William B Guyol Jr. Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63117 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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

Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
82%146 patients4/55-star benchmark: 85%
Diabetes: Eye Exam
Percentage of patients 18-75 years of age with diabetes who had a retinal or dilated eye exam by an eye care professional during the measurement period or a negative retinal exam (no evidence of retinopathy) in the 12 months prior to the measurement period
35%26 patients2/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
54%329 patients3/55-star benchmark: 97%
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.

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.

MRS. JUDITH ANN DIETZLER RPH
Pharmacist
1035 BELLEVUE AVE, CLAYTON HEALTH SERVICES PHARMACY
SAINT LOUIS, MO 63117
St. Louis County (314) 768-8870
SSM HEALTH CARE ST LOUIS
Pharmacy (Community/Retail Pharmacy)
1035 BELLEVUE AVE
SAINT LOUIS, MO 63117
St. Louis County (314) 768-8870
SSM MEDICAL GROUP
Clinic/Center
1035 BELLEVUE AVE, SUITE 305
SAINT LOUIS, MO 63117
St. Louis County (314) 644-6161
GENERATIONS FAMILY MEDICINE PC
Family Medicine
1035 BELLEVUE AVE, SUITE 206
ST LOUIS, MO 63117
St. Louis County (314) 781-4922
WELLNESS HEALTHCARE ASSOCIATES, INC
Family Medicine
1035 BELLEVUE AVE, STE 401
SAINT LOUIS, MO 63117
St. Louis County (314) 781-0361
SSM MEDICAL GROUP
Clinic/Center
1035 BELLEVUE AVE, SUITE 502
SAINT LOUIS, MO 63117
St. Louis County (314) 638-3600
SSM MEDICAL GROUP
Clinic/Center (Medical Specialty)
1035 BELLEVUE AVE, SUITE 500
SAINT LOUIS, MO 63117
St. Louis County (314) 647-1115
DAVID ALAN WACHTER RPH
Pharmacist
1035 BELLEVUE AVE
SAINT LOUIS, MO 63117
St. Louis County (314) 768-8870

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 William Guyol's NPI number?

The NPI number for William Guyol is 1396738019. It was assigned to this individual provider in the NPPES registry on August 28, 2005.

Where is William Guyol located?

William Guyol practices at 1035 Bellevue Ave Suite 105, Saint Louis, MO 63117. The listed phone number is (314) 646-7015.

What is William Guyol's specialty?

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

Is William Guyol enrolled in Medicare?

Yes. William Guyol is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Guyol was last updated on August 5, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.