Dr. Ray C. Haselby DO

Infectious Disease Specialist

He is located at 1000 North Oak Avenue in Marshfield, WI 54449. Can help patients with the following: Hepatitis C (HCV), Infectious Diseases, Mumps, Severe Acute Respiratory Syndrome (SARS), Strep Throat, Yeast Infection. His National Provider Identifier (NPI) number is 1598873648. Appointment can be made via the phone number (715) 387-5193.

Conditions treated Marketplace plans

Conditions treated

Dr. Ray C. Haselby, being an infectious disease specialist, 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. Ray C. Haselby.

Abdominal Pain
Acquired Immunodeficiency Syndrome (AIDS)
Acute Pain
Anemia
Anthrax
Arthritis
Asthma
Atherosclerosis
Bacterial Vaginosis
Bladder Control
Boils
Botulism
Bronchitis
Brucellosis
Cancer
Candida Auris
Cat Scratch Disease
Cellulitis
Chagas Disease
Chest Pain
Chickenpox
Chlamydia
Cholecystitis
Cholera
Chronic Obstructive Pulmonary Disease (COPD)
Chronic Rhinitis
Common Cold
Constipation
Coronavirus
Cryptococcosis
Cystitis
Cytomegalovirus (CMV)
Dengue Fever
Diarrhea
Diphtheria
E. Coli Infection
Eastern Equine Encephalitis (EEE)
Ebola Hemorrhagic Fever
Edema
Encephalitis
Endocarditis
Epididymitis
Fever
Fifth Disease
Food Poisoning
Gangrene
Gastroesophageal Reflux Disease (GERD)
General Care
Genital Herpes
Giardiasis
Gonorrhea
Guinea Worm Disease
Hand, Foot, and Mouth Disease (HFMD)
Headache
Heart Disease
Helicobacter Pylori Infection
Hepatitis A (HAV)
Hepatitis B (HBV)
Hepatitis C (HCV)
Herpes Simplex Virus
Hiatal Hernia
High Blood Pressure
Histoplasmosis
Hot Flashes
Human Immunodeficiency Virus (HIV)
Human Papillomavirus (HPV)
Hyperlipidemia
Hyponatremia
Impetigo
Infectious Diseases
Infectious Mononucleosis
Influenza
Inguinal Hernia
Leishmaniasis
Leprosy
Leptospirosis
Listeriosis
Lyme Disease
Mad Cow Disease
Malaria
Measles
Meningitis
Migraine
Mumps
Nail Fungus
Nausea and Vomiting
Necrotizing Fasciitis (NF)
Neutropenia
Obesity
Osteomyelitis
Osteoporosis
Peptic Ulcer
Pinworm Infection
Pityriasis Rosea
Pneumonia
Polio
Prescription Refill
Rabies
Rocky Mountain Spotted Fever (RMSF)
Roseola
Rubella
Salmonella Food Poisoning
Scabies
Scarlet Fever
Schistosomiasis
Sepsis
Severe Acute Respiratory Syndrome (SARS)
Sexually Transmitted Diseases (STDs)
Smallpox
Sore Throat
Staph Infection
Stomach Flu
Strep Throat
Swine Flu
Syphilis
Tetanus
Thrush
Tonsillitis
Toxic Shock Syndrome (TSS)
Toxoplasmosis
Trichinosis
Tuberculosis (TB)
Typhoid Fever
Upper Respiratory Infection (URI)
Urethritis
Urinary Tract Infection (UTI)
Valley Fever
Viral Hemorrhagic Fever (VHF)
West Nile Virus
Whooping Cough
Yaws
Yeast Infection
Yellow Fever
Zika Virus

ACA Marketplace (Obamacare/HealthCare.gov) plan networks

Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Ray C. Haselby as in-network for the following 2026 plans.

Health plans

Medica

Network data as of Jul 13, 2026, as reported by the insurer.

Show all 9 plans from Medica

Medica plans
Plan	Plan type	Network tier	New patients
Medica Individual Choice Bronze HSA	EPO · Expanded Bronze	Preferred	Accepting new patients
Medica Individual Choice Bronze Share	EPO · Expanded Bronze	Preferred	Accepting new patients
Medica Individual Choice Expanded Bronze Standard	EPO · Expanded Bronze	Preferred	Accepting new patients
Medica Individual Choice Gold $0 Copay PCP Visits	EPO · Gold	Preferred	Accepting new patients
Medica Individual Choice Gold Share	EPO · Gold	Preferred	Accepting new patients
Medica Individual Choice Gold Standard	EPO · Gold	Preferred	Accepting new patients
Medica Individual Choice Silver $0 Copay PCP Visits	EPO · Silver	Preferred	Accepting new patients
Medica Individual Choice Silver Share	EPO · Silver	Preferred	Accepting new patients
Medica Individual Choice Silver Standard	EPO · Silver	Preferred	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. Ray C. Haselby is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.

Insurance information looks wrong? Let us know

Payments received

Drug payment

Sanofi	$819

Other

Travel and Lodging	$460
Food and Beverage	$360

Additional Specialities

Internist

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Dr. Mary Beth Graham

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Dr. Sarah Jane Lulloff

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Dr. Andrew E. Petroll

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Dr. Katherine M. Torres

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Dr. Sonia Sharma Dhingra

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Dr. Barbara L. Lauderdale

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Questions & Answers

Where can you meet with Dr. Ray C. Haselby?

Dr. Ray C. Haselby's office is located at 1000 North Oak Avenue in Marshfield, WI 54449.

What conditions does Dr. Ray C. Haselby treat?

Dr. Ray C. Haselby provides treatment for Hepatitis C (HCV), Infectious Diseases, Mumps, Severe Acute Respiratory Syndrome (SARS), Strep Throat, Yeast Infection. For the full list see this list.

Does Dr. Ray C. Haselby accept insurance?

Dr. Ray C. Haselby is listed in-network for 9 ACA Marketplace (Obamacare/HealthCare.gov) plans from Medica. See the Marketplace plans section for details.