Physician Profile
William L. Hollabaugh, MD
Unclaimed ProfileAbout Dr. Hollabaugh
William L. Hollabaugh, MD is a healthcare provider in O Fallon, MO specializing in pediatrics. William trained at Medical College of Wisconsin, graduating in 2014. According to Medicare claims data, William cared for 51 Medicare patients across 137 services. The services billed most often include injection, triamcinolone acetonide, not otherwise specified, 10 mg, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and aspiration and/or injection of fluid large joint using ultrasound guidance.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (314) 514-3500
- Email not available
Practice Locations
20 PROGRESS POINT PKWY DEPT ORTHOPAEDIC SURGERY, STE 114
O Fallon, MO 63368
Conditions Commonly Evaluated or Treated
Within Pediatrics generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- ADHD
- Autism
- Childhood asthma
- Childhood obesity
- Ear infections
- RSV
- Stomachache
Digestive and urinary
- Bedwetting
- UTI
- Viral gastroenteritis
Ear, nose, throat, and eye
- Pink eye
- Seasonal allergies
- Sinus infection
- Swimmer's ear
Growth, development, and behavior
- Speech and language delay
Newborn and infant
- Diaper rash
- Poor weight gain and failure to thrive
Respiratory and infectious
- Croup
- Hand, foot, and mouth disease
- Mononucleosis
- Strep throat
Skin
- Acne
- Head lice
- Warts
Brain & nerves
- Childhood epilepsy
Digestive health
- Baby acid reflux
Digestive Health
- Constipation in Children
Infant Health
- Baby Colic
- Teething
Infections
- Flu in children
Injuries
- Concussion in Children
Mental Health
- Childhood anxiety
- Childhood Depression
Respiratory
- Walking Pneumonia in Children
Skin Conditions
- Poison Ivy
- Ringworm
- Seborrheic dermatitis
Procedures & services
Most searched procedures
- Allergy testing
- Pediatric vaccinations
- Sports physical
- Well-child visit
Immunization and screening
- Depression screening
- Newborn metabolic screening
Office testing
- Rapid strep testing
- Spirometry
- Urinalysis
Checkups & Exams
- Camp Physical
- Daycare Physical
Developmental & Behavioral
- Childhood Development Screening
Diagnostic Tests
- Anemia Blood Test
- Childhood Vision Screening
- Heart Murmur Evaluation
- Lead Poisoning Screening
- Newborn Bilirubin Check
- Pediatric Blood Draw
Diagnostic tests
- Pediatric hearing test
Infant Health
- Head Shape Check
- Lactation and Breastfeeding Support
- Tongue-Tie Assessment
Lab tests & screenings
- Rapid COVID-19 test
- Rapid flu test
Minor procedures
- Medical ear piercing
Office procedures
- Cryotherapy for skin lesions
- Earwax removal
- Incision and drainage of an abscess
- Minor laceration repair
- Superficial foreign-body removal
Preventive care
- Fluoride Varnish Application
Procedures & Minor Surgery
- Circumcision Care and Consultation
- Putting Elbow Back in Place
- Tick Removal
Respiratory
- Breathing Treatment
Urgent care & minor procedures
- Splinting for broken bones and sprains
- Stopping Severe Nosebleeds
Procedures Most Often Billed to Medicare
137 services · 51 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid large joint using ultrasound guidance | Procedure | 20611 |
22 | Less often than most peers in Pediatrics |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
92 | Less often than most peers in Pediatrics |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
23 | Less often than most peers in Pediatrics |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other pediatricians at this location 6
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other pediatricians in O Fallon 4
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Medical College of Wisconsin 8
Other providers in the same specialty who trained at the same institution.
Class of 2014 at Medical College of Wisconsin 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid large joint using ultrasound guidance 8
Providers in MO who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Hollabaugh?
Dr. Hollabaugh is a pediatrician in O Fallon, MO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pediatrics”.
NPI registry
What is Dr. Hollabaugh's address?
Dr. Hollabaugh is listed at 20 Progress Point Pkwy Dept Orthopaedic Surgery, Ste 114, O Fallon, MO 63368. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Hollabaugh?
The number on file is (314) 514-3500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Hollabaugh's NPI number?
Dr. Hollabaugh's National Provider Identifier is 1659868040. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Hollabaugh train?
Dr. Hollabaugh attended Medical College of Wisconsin, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Hollabaugh been practicing?
Dr. Hollabaugh has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Hollabaugh perform?
According to Medicare billing data, Dr. Hollabaugh performs procedures including aspiration and/or injection of fluid large joint using ultrasound guidance, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Hollabaugh confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hollabaugh. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.