DR. WILLIAM L RIVES MD
NPI 1003832312
Hospitalist in Saint Louis, MO

Q: What is William Rives's NPI number?

The NPI number for William Rives is 1003832312. It was assigned to this individual provider in the NPPES registry on July 14, 2006.

Q: What is William Rives's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

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

Active since July 14, 2006PECOS Enrolled

1 CHILDRENS PL, DIV PED HOSPITALIST MED, SAINT LOUIS, MO 63110(314) 454-2076(314) 747-8953 Get Directions Write a Review

NPPES record last updated: April 17, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Nov 15, 2021 and 5 more (8 updates tracked since 2016).

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About Dr. William L Rives Md NPPES

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

DR. WILLIAM L RIVES MD (NPI 1003832312) is an individual hospitalist provider in Saint Louis, Missouri, licensed in Missouri (118702) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1003832312

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameDR. WILLIAM L RIVESCredential: MD

Location Address1 CHILDRENS PL, DIV PED HOSPITALIST MEDSaint Louis, MO 63110-1002

Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 454-2076 · Fax (314) 747-8953

Phone(314) 454-2076

Fax(314) 747-8953

Sole ProprietorNo

Enumeration DateJuly 14, 2006

Last NPPES UpdateApril 17, 20258 updates tracked since enumeration

✔ NPI 1003832312 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in MO · 118702

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedPediatricsTaxonomy 208000000X · License 118702 (MO)

Also ListedPediatrics · Pediatric Emergency MedicineTaxonomy 2080P0204X · License 118702 (MO)

1 CHILDRENS PL, Saint Louis, MO 63110

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Other Identifiers 1

Medicaid204016505MO

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 L Rives 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.