Dr William Louis Hollabaugh, MD - Medicare Pediatric Medicine in O Fallon, MO

Dr William Louis Hollabaugh, MD is a medicare enrolled "Pediatrics - Sports Medicine" physician in O Fallon, Missouri. He graduated from medical school in 2018 and has 6 years of diverse experience with area of expertise as Pediatric Medicine. He is a member of the group practice Vanderbilt University Medical Center and his current practice location is 20 Progress Point Pkwy, Dept Orthopaedic Surgery, Ste 114, O Fallon, Missouri. You can reach out to his office (for appointments etc.) via phone at (636) 344-3701.

Dr William Louis Hollabaugh is licensed to practice in Missouri (license number 2024016238) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1659868040.

Contact Information

Dr William Louis Hollabaugh, MD
20 Progress Point Pkwy, Dept Orthopaedic Surgery, Ste 114,
O Fallon, MO 63368-2206
(636) 344-3701
(636) 344-3100

Map and Direction




Physician's Profile

Full NameDr William Louis Hollabaugh
GenderMale
SpecialityPediatric Medicine
Experience6 Years
Location20 Progress Point Pkwy, O Fallon, Missouri
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr William Louis Hollabaugh graduated from medical school in 2018
  NPI Data:
  • NPI Number: 1659868040
  • Provider Enumeration Date: 04/20/2018
  • Last Update Date: 08/14/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 8820487119
  • Enrollment ID: I20211108000405

Medical Identifiers

Medical identifiers for Dr William Louis Hollabaugh such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1659868040NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2080S0010XPediatrics - Sports Medicine 2024016238 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Vanderbilt University Medical CenterNashville, TNHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Vanderbilt University Medical Center50920234162742

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr William Louis Hollabaugh allows following entities to bill medicare on his behalf.
Entity NameVanderbilt University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1104202761
PECOS PAC ID: 5092023416
Enrollment ID: O20151006000369

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr William Louis Hollabaugh is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr William Louis Hollabaugh, MD
Po Box 60352,
Saint Louis, MO 63160-0352

Ph: (636) 344-3701
Dr William Louis Hollabaugh, MD
20 Progress Point Pkwy, Dept Orthopaedic Surgery, Ste 114,
O Fallon, MO 63368-2206

Ph: (636) 344-3701

Reviews and Comments


Pediatrics Doctors in O Fallon, MO

Dr. Cecilia H Yu, MD
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 20 Progress Point Pkwy, Ste 22, O Fallon, MO 63368
Phone: 636-344-3333    Fax: 636-344-3334
Kimberly N Hackney, D.O.
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 300 Winding Woods Dr Ste 120, O Fallon, MO 63366
Phone: 636-978-7902    
Dr. Yasangi Marina Jayasinha, M.D.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 1001 Highway K, Suite 4, O Fallon, MO 63366
Phone: 636-240-9896    
Dr. John A Myers, MD
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 20 Progress Point Pkwy, Ste 22, O Fallon, MO 63368
Phone: 636-344-3333    Fax: 636-344-3334
Dr. Trina J Blythe, M.D.
Pediatrics
Medicare: Accepting Medicare Assignments
Practice Location: 20 Progress Point Pkwy Ste 100, O Fallon, MO 63368
Phone: 636-344-2213    
Dr. Phillip D Reichert, MD
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 20 Progress Point Pkwy, Ste 22, O Fallon, MO 63368
Phone: 636-344-3333    Fax: 636-344-3334
Melissa Roewe, DO
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 9979 Winghaven Blvd Ste 206, O Fallon, MO 63368
Phone: 636-561-5291    Fax: 636-561-5290

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.