Dr. Justin T. Castellow
- Gender: Male
- Sole propriator: No
- NPI: 1639565344
Dr. Justin T. Castellow MD
Pediatrician
He is located at 1000 North Oak Avenue in Marshfield, WI 54449. Can help patients with the following: Allergic Reaction, Autism, Bronchitis, Fragile X Syndrome (FXS), Hay Fever, Reye Syndrome. His National Provider Identifier (NPI) number is 1639565344. Appointment can be made via the phone number (715) 387-5511.
Conditions treated
Dr. Justin T. Castellow, being an pediatrician, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Justin T. Castellow.
- Abdominal Pain
- Allergic Reaction
- Anemia
- Anencephaly
- Asthma
- Autism
- Bee and Wasp Stings
- Birth Defects
- Bronchitis
- Cerebral Palsy (CP)
- Childhood Behavioral and Emotional Disorders
- Childhood Obesity
- Chronic Cough
- Cleft Palate and Cleft Lip
- Colic
- Common Cold
- Croup
- Developmental Delays
- Down Syndrome
- Dyslexia
- Eczema
- Edwards Syndrome
- Enuresis
- Fetal Alcohol Syndrome (FAS)
- Fever
- Food Poisoning
- Fragile X Syndrome (FXS)
- General Care
- Hay Fever
- Head Lice
- Headache
- Hives
- Infant Care
- Influenza
- Jaundice
- Kawasaki Disease
- Learning Disability
- Migraine
- Muscular Dystrophy
- Nausea and Vomiting
- Noonan Syndrome
- Parenting
- Pervasive Developmental Disorders (PDD)
- Phenylketonuria (PKU)
- Pinworm Infection
- Prescription Refill
- Reye Syndrome
- Rickets
- Sinusitis
- Skin Rash
- Sore Throat
- Speech Disorders
- Stuttering
- Sudden Infant Death Syndrome (SIDS)
- Tourette Syndrome
- Turner Syndrome
- Upper Respiratory Infection (URI)
- Urinary Tract Infection (UTI)
- Williams Syndrome
- Wilson-Turner Syndrome
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Justin T. Castellow as in-network for the following 2026 plans.
Health plans
HealthPartners
Network data as of Aug 19, 2026, as reported by the insurer.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Oak $1,300 Gold | PPO · Gold | Network | Accepting new patients |
| Oak $2,000 Standard Gold | PPO · Gold | Network | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Justin T. Castellow is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Justin T. Castellow is enrolled to bill Medicare as a Order And Referring Only - Pediatric Medicine (also registered under: Practitioner - Pediatric Medicine) .
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Additional Specialities
- Resident
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- Gender: Female
- Address: 1530 South Olive Street Los Angeles, 90015, CA
- Gender: Female
- Address: 105 West 5th Street Marshfield, 54449, WI
- Gender: Male
- Address: 1000 North Oak Avenue Marshfield, 54449, WI
- Gender: Male
- Address: 1000 North Oak Avenue Marshfield, 54449, WI
- Gender: Male
- Address: 1000 North Oak Avenue Marshfield, 54449, WI
- Gender: Female
- Address: 1000 North Oak Avenue Marshfield, 54449, WI
- Gender: Male
- Address: 1000 North Oak Avenue Marshfield, 54449, WI
- Gender: Female
- Address: 1000 North Oak Avenue Marshfield, 54449, WI
- Gender: Male
- Address: 1000 North Oak Avenue Marshfield, 54449, WI
- Gender: Male
- Address: 115655 Riverside Road Marshfield, 54449, WI
Questions & Answers
Does Dr. Justin T. Castellow accept insurance?
Dr. Justin T. Castellow is listed in-network for 2 ACA Marketplace (Obamacare/HealthCare.gov) plans from HealthPartners. See the Marketplace plans section for details.
What conditions does Dr. Justin T. Castellow treat?
Dr. Justin T. Castellow provides treatment for Allergic Reaction, Autism, Bronchitis, Fragile X Syndrome (FXS), Hay Fever, Reye Syndrome. For the full list see this list.
Where can you meet with Dr. Justin T. Castellow?
Dr. Justin T. Castellow's office is located at 1000 North Oak Avenue in Marshfield, WI 54449.