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DR. WILLIAM LOUIS HOLLABAUGH MD
NPI 1659868040
Pediatrics - Sports Medicine in O Fallon, MO

Active since April 20, 2018PECOS EnrolledAccepts Medicare Assignment
97.12/100
CMS Quality Rating
20 PROGRESS POINT PKWY, DEPT ORTHOPAEDIC SURGERY, STE 114, O FALLON, MO 63368(314) 514-3500(314) 878-7678 Get Directions Write a Review

NPPES record last updated: April 17, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Aug 14, 2024, Nov 16, 2021, Oct 20, 2021 and 1 more (4 updates tracked since 2018).

About Dr. William Louis Hollabaugh Md NPPES

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

DR. WILLIAM LOUIS HOLLABAUGH MD (NPI 1659868040) is an individual sports medicine provider in O Fallon, Missouri, licensed in Missouri (2024016238) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and is a graduate of Medical College Of Wisconsin (2014).

NPPES Registry Identity

NPI1659868040
Entity TypeIndividualMale
Primary Taxonomy2080S0010X
Provider Legal NameDR. WILLIAM LOUIS HOLLABAUGHCredential: MD
Location Address20 PROGRESS POINT PKWY, DEPT ORTHOPAEDIC SURGERY, STE 114O Fallon, MO 63368-2206
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 514-3500 · Fax (314) 878-7678
Phone(314) 514-3500
Fax(314) 878-7678
Sole ProprietorNo
Medical School CMSMedical College Of WisconsinGraduated 2014
Enumeration DateApril 20, 2018
Last NPPES UpdateApril 17, 20254 updates tracked since enumeration
NPPES CertifiedMarch 16, 2022
✔ NPI 1659868040 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Sports MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080S0010X
License✔ Licensed in MO · 2024016238
Definition
A pediatrician who is responsible for continuous care in the field of sports medicine, not only for the enhancement of health and fitness, but also for the prevention of injury and illness. A sports medicine physician must have knowledge and experience in the promotion of wellness and the prevention of injury. Knowledge about special areas of medicine such as exercise physiology, biomechanics, nutrition, psychology, physical rehabilitation, epidemiology, physical evaluation, injuries (treatment and prevention and referral practice) and the role of exercise in promoting a healthy lifestyle are essential to the practice of sports medicine. The sports medicine physician requires special education to provide the knowledge to improve the healthcare of the individual engaged in physical exercise (sports) whether as an individual or in team participation.
20 PROGRESS POINT PKWY, O Fallon, MO 63368
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Other Identifiers 1

Medicaid200148295MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cox HealthPlans.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

Dr. William Louis Hollabaugh 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 ID8820487119
PECOS Enrollment IDI20241010003985
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 3

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.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
92 services18 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.
23 services17 patients
Aspiration and/or injection of fluid large joint using ultrasound guidance 20611
This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.
22 services16 patients

Hospital Affiliations CMS Care Compare 2

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

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260032
LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County
Emergency services Birthing friendly

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260108
Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County
Emergency services Birthing friendly

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.

97.12/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality85.64
Promoting Interoperability100
Improvement Activities40

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.

DR. CECILIA H YU MD
Pediatrics
20 PROGRESS POINT PKWY, STE 220
O FALLON, MO 63368
St. Charles County (636) 344-3333
DR. JOHN A MYERS MD
Pediatrics
20 PROGRESS POINT PKWY, STE 220
O FALLON, MO 63368
St. Charles County (636) 344-3333
MR. DUNCAN SCOTT MCHARDY FNP
Nurse Practitioner (Family)
20 PROGRESS POINT PKWY, DEPT ORTHOPAEDIC SURGERY, STE 114
O FALLON, MO 63368
St. Charles County (314) 514-3500
WUCA-O'FALLON PEDIATRICS, LLC
Pediatrics
20 PROGRESS POINT PKWY, SUITE 220
O FALLON, MO 63368
St. Charles County (636) 344-3333
DR. NIKOL LEI SMART MD
Obstetrics & Gynecology
20 PROGRESS POINT PKWY, STE 206
O FALLON, MO 63368
St. Charles County (636) 344-1073
GINA VIRGINIA HERMSEN NELSON R.N.,C.P.N.P.
Nurse Practitioner (Pediatrics)
20 PROGRESS POINT PKWY, SUITE 220
O FALLON, MO 63368
St. Charles County (636) 344-3333
DR. ENMANUEL JOSE PEREZ MD
Psychiatry & Neurology (Neurology)
20 PROGRESS POINT PKWY
O FALLON, MO 63368
St. Charles County (636) 916-7060
MILTON OLUDHE OCHIENG' M.D.
Internal Medicine (Gastroenterology)
20 PROGRESS POINT PKWY, STE 108
O FALLON, MO 63368
St. Charles County (636) 344-1073

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 Hollabaugh's NPI number?

The NPI number for William Hollabaugh is 1659868040. It was assigned to this individual provider in the NPPES registry on April 20, 2018.

Where is William Hollabaugh located?

William Hollabaugh practices at 20 Progress Point Pkwy Dept Orthopaedic Surgery, Ste 114, O Fallon, MO 63368. The listed phone number is (314) 514-3500.

What is William Hollabaugh's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Sports Medicine, with taxonomy code 2080S0010X.

Is William Hollabaugh enrolled in Medicare?

Yes. William Hollabaugh 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 William Hollabaugh accept?

Health plans from Cox HealthPlans list William Hollabaugh 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 William Hollabaugh affiliated with any hospitals?

According to CMS data, William Hollabaugh is affiliated with Barnes Jewish Hospital and Missouri Baptist Medical Center.

When was this NPI record last updated?

The NPPES record for William Hollabaugh 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.