WR
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Ryan, Allergist & Immunologist in Nashua, NH?
Dr. Walter Ryan, DO is an Allergist & Immunologist, who primarily practices in Nashua, NH with 2 additional practice locations. He is board certified by the American Board of Internal Medicine. Dr. Ryan graduated from Nova Southeastern University College of Osteopathic Medicine and completed his residency at LSU HEALTH SCIENCES. Dr. Ryan is fluent in English and Spanish, and is currently seeing new patients. Dr. Ryan’s practice accepts Cigna, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Ryan’s office.
Where did Dr. Ryan go to medical school and complete their residency?
Residency: LSU HEALTH SCIENCES
Medical School: Nova Southeastern University College of Osteopathic Medicine
Is Dr. Ryan board certified in Allergist & Immunologist?
Yes, Dr. Walter Ryan, DO is board certified by the American Board of Internal Medicine
What languages does Dr. Ryan speak?
Dr. Ryan and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Ryan treat?
As a Allergist & Immunologist, Dr. Ryan diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Ryan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Allergy Desensitization
- Allergy shots
- Immunotherapy for allergies
- Allergen desensitization therapy
ICD-10 Codes:
- Z516: Encounter for desensitization to allergens
Also known as:
- Mild Intermittent Asthma
- Moderate Persistent Asthma
- Mild Persistent Asthma
- Asthma
- Severe Persistent Asthma
- Occasional Asthma
- Mild Asthma Attacks
- Infrequent Asthma
- Ongoing Moderate Asthma
- Regular Moderate Asthma
- Chronic Moderate Asthma
- Ongoing Mild Asthma
- Regular Mild Asthma
- Chronic Mild Asthma
- Reactive Airway Disease
- Bronchial Asthma
- Allergic Asthma
- Chronic Severe Asthma
- Difficult-to-Treat Asthma
- Severe Asthma
ICD-10 Codes:
- J4520: Mild intermittent asthma, uncomplicated
- J4540: Moderate persistent asthma, uncomplicated
- J4530: Mild persistent asthma, uncomplicated
- J45909: Unspecified asthma, uncomplicated
- J4550: Severe persistent asthma, uncomplicated
Also known as:
- Allergic Rhinitis
- Hay Fever
- Allergy Testing
- Allergy
- Nasal allergies
- Allergy rhinitis
- Chronic runny nose
- Pollen allergy
- Seasonal allergies
- Allergic rhinitis
- Allergy screen
- Allergy evaluation
- Hypersensitivity testing
ICD-10 Codes:
- J309: Allergic rhinitis, unspecified
- J301: Allergic rhinitis due to pollen
- Z0182: Encounter for allergy testing
Also known as:
- Allergic Rhinitis
- Pet Allergy
- Insect Allergy
- Allergy
- Insect Bites and Stings
- Nasal allergy
- Chronic allergy symptoms
- Allergic reactions
- Animal dander allergy
- Cat allergy
- Dog allergy
- Allergic rhinitis from pets
- Insect bite allergy
- Insect sting allergy
- Insect hypersensitivity
ICD-10 Codes:
- J3089: Other allergic rhinitis
- J3081: Allergic rhinitis due to animal (cat) (dog) hair and dander
- Z91038: Other insect allergy status
Also known as:
- Chronic Rhinitis
- Nose Injuries and Disorder
- Chronic runny nose
- Persistent nasal inflammation
- Long-term stuffy nose
ICD-10 Codes:
- J310: Chronic rhinitis
Also known as:
- Hives
- Other Types of Hives
- Chronic Hives
- Urticaria
- Welts
- Itchy rash
- Atypical hives
- Uncommon urticaria
- Variant hives
- Hives of unknown cause
- Spontaneous urticaria
- Persistent welts
ICD-10 Codes:
- L509: Urticaria, unspecified
- L508: Other urticaria
- L501: Idiopathic urticaria
Also known as:
- Other Food Allergy
- Peanut Allergy
- Food Allergy
- Unspecified Food Allergy
- Multiple Food Allergies
- Food Hypersensitivity
- Peanut Hypersensitivity
- Groundnut Allergy
- Allergic Reaction to Peanuts
ICD-10 Codes:
- Z91018: Allergy to other foods
- Z91010: Allergy to peanuts
Also known as:
- Unspecified Abnormal Finding in Organs or Tissues
- General abnormal tissue test
- Unspecified organ abnormality
- Abnormal body system finding
ICD-10 Codes:
- R899: Unspecified abnormal finding in specimens from other organs, systems and tissues
Also known as:
- Cough
- Coughing
- Persistent cough
- Chronic cough
ICD-10 Codes:
- R059: Cough, unspecified
Which procedures does Dr. Ryan perform as a Allergist & Immunologist?
As a Allergist & Immunologist, procedures performed by an Dr. Walter Ryan may include:
- Allergy Consultation
- Allergy Follow Up
- Allergy Shots
- Allergy Testing
- Insect Bite(s)
- Sinus Surgeon Consultation
- Sinus Surgeon Follow Up
- Sinus Surgery
For detailed information, please contact Dr. Ryan's office.
Does Dr. Ryan accept my insurance?
Dr. Ryan accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Ryan accept in Nashua, NH?
Dr. Ryan in Nashua, NH accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
BCBS Unspecified
Boston Medical Center
Centene
Cigna
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Health Plans
Medicare
Point32Health
UnitedHealthcare
View All Insurances
Where is Dr. Ryan's office located?
What is Dr. Ryan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Ryan's National Provider Identifier (NPI) number is 1073503843.
What common questions do patients ask about Dr. Ryan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Ryan
What is Dr. Walter Ryan's specialty?
Dr. Ryan is a Allergist & Immunologist near Nashua, NH. An allergist-immunologist is well-versed in the assessment, physical examination, laboratory diagnosis, and treatment of immune system disorders. These conditions include, but are not limited to, eczema, asthma, anaphylaxis, rhinitis, and adverse reactions to food, medication, and insect stings. Furthermore, they manage immune deficiency diseases, whether acquired or congenital, issues with host defense, and challenges associated with autoimmune diseases, organ transplantation, or immune system malignancies. Contact Dr. Ryan to book an appointment today.
Is this Dr. Walter Ryan affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Ryan is affiliated with Dartmouth Hitchcock Medical Center, Dartmouth Hitchcock Medical Center, Elliot Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Allergist & Immunologist?
Explore Allergist & Immunologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Walter Ryan accepting new patients in Nashua, NH?
Yes, Dr. Walter Ryan is accepting new patients at this time.
Does Dr. Walter Ryan offer online booking?
Please contact Dr. Ryan's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Walter Ryan?
Please contact Dr. Ryan's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Walter Ryan have?
Dr. Walter Ryan is certified by the American Board of Internal Medicine.
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