DR. WILLIAM G POWDERLY MD
NPI 1275878019
Internal Medicine - Infectious Disease in Saint Louis, MO

Q: What is William Powderly's NPI number?

The NPI number for William Powderly is 1275878019. It was assigned to this individual provider in the NPPES registry on December 5, 2012.

Q: What is William Powderly's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for William Powderly was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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 December 05, 2012PECOS Enrolled

79.29/100

CMS Quality Rating

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100, SAINT LOUIS, MO 63110(314) 362-9098(314) 362-9851 Get Directions Write a Review

NPPES record last updated: April 17, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Nov 15, 2021 and 3 more (6 updates tracked since 2015).

On this page

About Dr. William G Powderly Md NPPES

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

DR. WILLIAM G POWDERLY MD (NPI 1275878019) is an individual infectious disease provider in Saint Louis, Missouri, licensed in Missouri (2013003690) and active in the NPI registry since December 2012. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275878019

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameDR. WILLIAM G POWDERLYCredential: MD

Location Address620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100Saint Louis, MO 63110-1035

Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 362-9098 · Fax (314) 362-9851

Phone(314) 362-9098

Fax(314) 362-9851

Sole ProprietorNo

Enumeration DateDecember 5, 2012

Last NPPES UpdateApril 17, 20256 updates tracked since enumeration

✔ NPI 1275878019 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in MO · 2013003690

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

620 S TAYLOR AVE, Saint Louis, MO 63110

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Other Identifiers 1

Medicaid202535316MO

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 G Powderly 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 63110 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.

79.29/100

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

Scored as part of a group practice

Quality

71.46

Promoting Interoperability

100

Improvement Activities

Cost

59.51

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.

MS. RACHEL ERIN OBRIEN AGNP

Nurse Practitioner

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. ADITI RAMAKRISHNAN MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 747-1206

DR. CARLOS ROBERTO MEJIA CHEW MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. PATRICK BRYAN MAZI MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 747-1206

DR. JANE ALISON OHALLORAN MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. LAURA RENEE MARKS MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

MS. KELLY EILIS LAVIN FNP

Nurse Practitioner (Family)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 747-1206

DR. PHILIP JENSEN BUDGE MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

MS. SARAH ELIZABETH ALLEMAN FNP

Nurse Practitioner (Family)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 747-1206

DR. MICHAEL JOSEPH DURKIN MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. ROBYN SUE KLEIN MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. NIGAR KIRMANI MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. ADRIANA MILAGROS R RAUSEO ACEVEDO MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 747-1206

DR. ERIK R DUBBERKE MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. ANUPAM S PANDE MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. MATIFADZA GAIL HLATSHWAYO MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. MARILIA RITA PINZONE MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 747-1206

DR. JOSEPH NABIL CHERABIE MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 747-1206

DR. DANIEL TIEN VO MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

DR. THOMAS C BAILEY MD

Internal Medicine (Infectious Disease)

620 S TAYLOR AVE, DIV IM INFECTIOUS DISEASE, STE 100
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9098

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 Powderly's NPI number?

The NPI number for William Powderly is 1275878019. It was assigned to this individual provider in the NPPES registry on December 5, 2012.

Where is William Powderly located?

William Powderly practices at 620 S Taylor Ave Div Im Infectious Disease, Ste 100, Saint Louis, MO 63110. The listed phone number is (314) 362-9098.

What is William Powderly's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is William Powderly enrolled in Medicare?

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

When was this NPI record last updated?

The NPPES record for William Powderly was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.