Dr. Gregory Sewall, MD

Ear, Nose, and ThroatMaleAge 47

Dr. Gregory Sewall, MD is a Otolaryngology (Ear, Nose & Throat) Specialist in Wausau, WI and has over 22 years of experience in the medical field. He graduated from Medical College Of Wisconsin medical school in 1999. He is affiliated with medical facilities Aspirus Medford Hospital and Aspirus Wausau Hospital. He is accepting new patients and has indicated that he accepts telehealth appointments. Be sure to call ahead with Dr. Sewall to book an appointment.

Dr. Sewall

ENT & Allergy Associates, S.C.

512 S 28th Ave Wausau, WI 54401
Accepting new patients
Telehealth services available

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At a Glance

  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Offers Telehealth
    This provider offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    Patient Safety Excellence Award™ See hospitals

Experience and Background Checks

Experience
Background

Background Check

Healthgrades does not collect malpractice claims information for Wisconsin
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check Dr. Sewall's experience treating your condition or procedure

Dr. Sewall's Top Procedures and Conditions

Treatment Frequency
Nosebleed
normal
normal

Treatment Frequency

Dr. Sewall treats Nosebleed more than 86% of his peers

Dr. Sewall treats this condition more than 86% of his peers

Outer Ear Infection
normal
normal

Treatment Frequency

Dr. Sewall treats Outer Ear Infection more than 79% of his peers

Dr. Sewall treats this condition more than 79% of his peers

Eustachian Tube Dysfunction
normal
normal

Treatment Frequency

Dr. Sewall treats Eustachian Tube Dysfunction more than 78% of his peers

Dr. Sewall treats this condition more than 78% of his peers

Dr. Sewall's conditions and procedures:

  • Ablation or Excision of Nasal Turbinates
  • Acute Laryngitis
  • Acute Sinusitis
  • Acute Tonsillitis
  • Acute Upper Respiratory Infection
  • Adenoidectomy
  • Adult Development Disorders
  • All Headaches (incl. Migraine)
  • Allergic Rhinitis
  • Anosmia
  • Antrostomy and Antrotomy (Sinus Surgery)
  • Bone Cancer
  • Broken Nose
  • Caldwell-Luc Procedure
  • Cervical Lymph Node Dissection
  • Cholesteatoma
  • Chronic Adenoid Infection
  • Chronic Laryngitis
  • Chronic Sinusitis
  • Chronic Tonsillitis
  • Conductive Hearing Loss
  • Cough
  • Deafness
  • Deviated Septum
  • Diagnostic Nasal and-or Sinus Endoscopy
  • Dizziness
  • Dysphagia
  • Ear Ache
  • Ear Infection
  • Ear Tube Placement
  • Earwax Buildup
  • Enlarged Turbinates
  • ENT Cancer
  • Ethmoidectomy (Sinus Surgery)
  • Eustachian Tube Dysfunction
  • Excision of Parotid, Sublingual, or Submandibular Gland
  • Excision or Destruction of Dentoalveolar Lesion or Tumor
  • Excision or Destruction of Pharynx Lesion
  • Excision or Destruction of Tongue Lesion
  • Facial Fracture
  • Facial Trauma
  • Gastroesophageal Reflux Disease (GERD)
  • Geographic Tongue
  • Gum Cancer
  • Head and Neck Surgery
  • Head or Neck Lump or Swelling
  • Headache
  • Hearing Loss Due to Noise
  • Hoarse Voice (Dysphonia)
  • Intranasal or Sinus Procedure
  • Laryngeal Cancer
  • Laryngitis
  • Laryngoscopy - Laryngotomy - Laryngectomy - Pharyngolaryngectomy - Pharyngectomy
  • Laryngoscopy and Laryngotomy
  • Loss of Smell and-or Taste
  • Loss of Taste
  • Lymph Node Biopsy or Excision
  • Malignant Otitis Externa
  • Motion Sickness
  • Nasal Obstruction
  • Nasal Polyp
  • Nasal Septum Surgery (Septoplasty)
  • Nasal Surgery
  • Nosebleed
  • Oral Cancer
  • Osteosarcoma
  • Otitis Media
  • Outer Ear Infection
  • Perforated Eardrum
  • Perforated Eardrum Repair (Tympanoplasty)
  • Pharyngitis
  • Postnasal Drip
  • Rhinoseptoplasty
  • Salivary Gland Cancer
  • Salivary Gland Diseases
  • Salivary Gland Stones and Inflammation
  • Sinus Surgery
  • Sinusitis
  • Sleep Apnea
  • Snoring
  • Soft Tissue Sarcoma
  • Soft Tissue Sarcoma of Head, Face, and Neck
  • Sphenoidotomy (Sinus Surgery)
  • Throat Pain
  • Thyroid Cancer
  • Thyroid Tumor
  • Thyroidectomy
  • Thyroidectomy or Thyroid Lobectomy
  • Tinnitus
  • Tongue Cancer
  • Tongue-Tie
  • Tonsil Cancer
  • Tonsillectomy
  • Tonsillitis
  • Tracheal Surgery
  • Trigeminal Neuralgia
  • Vertigo
  • Vocal Cord Nodule
  • Vocal Cord Paralysis
  • Wheezing
  • Wound Repair

Insurance Check

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Dr. Sewall accepts

Accepted insurance can change. Please double-check when making an appointment.

(715) 847-2021

Dr. Sewall accepts the following insurance:

Aetna
Aetna PPO
Choice Plus POS II
Anthem
Balanced Blue Access-WI PPO
Balanced Blue Preferred-WI POS
Blue Access Network (Wisconsin) PPO
Blue Access w/ Pref Retail Clinics-WI PPO
Blue Preferred (Select Network)-WI POS
Blue Preferred Network-WI
Blue Preferred Plus w/ Pref Retail Clinics-WI POS
Blue Preferred Plus-WI POS
Blue Priority (Select Network)-WI
Blue Priority Plus w/ Pref Retail Clinics-WI POS
Blue Priority WI Network-WI
Blue Traditional Network-WI
Bronze Blue Access-WI PPO
Bronze Blue Preferred-WI POS
Bronze Blue Priority-WI POS
Catastrophic Blue Priority-WI
Gold Blue Access-WI PPO
Gold Blue Preferred-WI POS
Gold Blue Priority-WI POS
Lumenos plans - Blue Access-WI
Lumenos plans - Blue Preferred-WI
National (BlueCard Basic) PPO
National (BlueCard) PPO
Platinum Blue Access-WI PPO
Platinum Blue Preferred-WI POS
Platinum Blue Priority-WI POS
Silver Blue Access-WI PPO
Silver Blue Preferred-WI POS
Silver Blue Priority-WI POS
Well Priority-WI POS
Anthem Blue Cross Blue Shield
Anthem Blue Cross Blue Shield HMO
Blue Preferred Plus POS
Arise Health Plan
Arise Health Plan HMO
Aspirus Network, Inc.
North Central Healthcare Alliance (NCHA)
Beech Street (Multiplan)
Blue Cross Blue Shield
Blue Card PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
ChoiceCare Network
Choice Care (Humana)
Cigna
Cigna PPO
Open Access Plus
HealthEOS
HealthPartners
HealthSmart - Interplan Health Group
Interplan Health Group
Humana
Choice Care PPO
Gold
Gold Choice
MultiPlan
MultiPlan PPO
PHCS Network PPO
PHCS
Security Health Plan (SHP)
Today's Options
Medicare Advantage PPO
UnitedHealthCare
Medicare Advantage PFFS
United Healthcare
Universal American
WEA Trust
Trust Preferred POS
Trust Preferred PPO
WEA Insurance Corporation
WEA Insurance Corporation POS
WPS Health Insurance
Indemnity
Statewide

Dr. Sewall's Reviews

Likelihood to recommend Dr. Sewall

3.7

Based on 40 ratings

5 Stars
62.5%
(25)
4 Stars
5%
(2)
3 Stars
2.5%
(1)
2 Stars
0%
(0)
1 Star
30%
(12)
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Leave a review

How likely are you to recommend
Dr. Sewall?
(Select your rating)
What went well
  • Office environment (31)
  • Explained conditions well (28)
  • Listened & answered questions (28)
What could be improved
  • Appointment was rushed (12)
  • Didn't trust the provider's decisions (11)
  • Didn't explain conditions well (9)
RecentHighestLowestMost Helpful
Reply Flag
I went in because of what I was told were sinus issues by a doctor I saw at a walk in clinic. It ended up my issues were not due to sinus problems but are most likely stress/migraine related. Dr Sewall walked through his assessment in a manner that was clear and straight forward. I appreciated his willingness to discuss my overall health (including stress) to come up with the best plan.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
4 people found this helpful
Helpful
Kelly – Dec 31, 2020
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Reply Flag
I took my two year old daughter into to see Dr. Sweall as she needed to have tubes put in her ears. He was very kind and informative. He made sure he talked me through the whole process and what to expect. He even called me personally the next day to check to see how she was doing.
What went well
  • Listened & answered questions
  • Explained conditions well
What could be improved
No results
3 people found this helpful
Helpful
linnea McGeshick – Nov 17, 2020
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Reply Flag
The staff at ENT was very pleasant up until Dr. Sewall. He seemed to be running behind schedule, as he didn't come into the room until about 20 min past my appointment time and generally rushed through the process. I was referred for concerns about a mass on the left side of my neck which to date no one seems to have an explanation for. I've been experiencing difficulty swallowing, and although I'm young and otherwise healthy I have extensive family history with cancer so my primary Dr has been very thorough in getting everything looked into. He basically dismissed all of my concerns and made it seem like I was making something out of nothing. He didn't provide any helpful suggestions as to what it could be, and even said he doesn't think any future examinations my Dr has scheduled are unnecessary. He said it could be a lymph node, although labs and a CT were done to them already and they're normal. He then said it could be stress or reflux. I left feeling embarrassed and disappointed.
What went well
  • Office environment
What could be improved
  • Appointment was rushed
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Didn't trust the provider's decisions
1 person found this helpful
Helpful
Would not Reccommend. – Sep 03, 2020
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Reply Flag
Bad bedside
What went well
No results
What could be improved
  • Didn't trust the provider's decisions
1 person found this helpful
Helpful
Aug 05, 2020
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Reply Flag
I had a L stapedectomy. All my appointments with Dr. Sewell and staff were friendly and professional. Dr. Sewell explained my upcoming procedure well and entertained all questions. Bedside manner was comforting. I felt very optimistic in his care. He also called the day after to check on me.
What went well
No results
What could be improved
No results
3 people found this helpful
Helpful
Renee S Wink – May 19, 2020
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Reply Flag
This physician seems to be informed and seems to care. It's his current situation with his nurse or assistant that ticked us off with her one size fits all mentality regarding a child with a 10 + year history of allergy and immunology difficulties. We've had enough of the eye rolls and opinions of people like her. The fact that we have / had to deal with her instead of Dr Sewall directly is why we would not recommend.
What went well
No results
What could be improved
No results
4 people found this helpful
Helpful
Patient Parents – Oct 29, 2019
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Reply Flag
Rude, pits patients through more testing than needed, and will not see him again.
What went well
No results
What could be improved
No results
1 person found this helpful
Helpful
Mar 19, 2019
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Reply Flag
Dr. Sewall is an excellent physician and surgeon and we would not trust anyone else with caring for our daughter. He explains procedures thoroughly and makes himself available after surgery even personally calling to follow up on post surgical recouperation. We are lucky to have such a talented ENT doctor in our area.
What went well
No results
What could be improved
No results
12 people found this helpful
Helpful
Michelle Harvey in Weston – Feb 27, 2019
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Reply Flag
Terrible.
What went well
No results
What could be improved
  • Difficult to schedule appointment
  • Staff wasn't friendly
  • Long wait times
  • Appointment was rushed
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Didn't trust the provider's decisions
1 person found this helpful
Helpful
Oct 04, 2018
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Reply Flag
I was referred to Dr Sewall by a friend. I was willing to travel to get his opinion of a chronic problem. His diagnosis, explanation and patience definitely deserves 5 stars.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
14 people found this helpful
Helpful
Joan in Long Lake – Aug 14, 2018
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Reply Flag
Dr. Sewall took time to explain things to me and, importantly, also to my son. I appreciate the fact that he called us at home the day after surgery to check in. He is an excellent surgeon and I would highly recommend him. My son wants me to add "and he loves dogs too!" :)
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
9 people found this helpful
Helpful
Lisa – Aug 14, 2018
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Reply Flag
Very kind doctor. Easy to talk to. I would highly recommend him.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
9 people found this helpful
Helpful
Christina in WI – Jul 24, 2018
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Reply Flag
I had been told by several walk in doctors that I had chronic sinusitis. I was ready to be be scheduled for sinus surgery due to the chronic pain i was having. After being seen by Dr. Sewall, it became clear I did not have sinusitis; instead I had migraine headaches. Thanks Dr. Sewall for listening and to me and using your expertise to diagnose me correctly!
What went well
No results
What could be improved
No results
8 people found this helpful
Helpful
Judy in Wausau, WI – Jul 19, 2017
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Reply Flag
Dr. Sewall was amazing to work with. I had seen him a couple of times over the course of a few years regarding my enlarged tonsils. After working with me, it was determined it may be best to have them removed. I had read so many horror stories about how terrible the surgery can be, but recovery went well, and I didn't need anything stronger than ibuprofen while recovering! Dr. Sewall's care during the surgery was stellar and he didn't cause any extra trauma in my mouth or throat.
What went well
No results
What could be improved
No results
8 people found this helpful
Helpful
Skyler in Park Falls, WI – Apr 30, 2017
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Reply Flag
My daughter has had hearing difficulties for the past 15 years. Dr. Sewall is and always has been wonderful with her. He explains things clearly, takes time to answer questions, is reassuring. His compassion and consistently thorough care has inspired my daughter to want to pursue a career in pediatric ENT.
What went well
No results
What could be improved
No results
8 people found this helpful
Helpful
Judi in Birnamwood, WI – Oct 25, 2016
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Reply Flag
Dr. Sewall was very friendly and patient with my mother who has Alzheimers. It is sometimes difficult to get to the bottom of her issues because of her deficits but Dr. Sewall was able to play detective and uncover her problem. Working with such a kind man has been a pleasure.
What went well
No results
What could be improved
No results
9 people found this helpful
Helpful
wausau patient in Wausau, WI – Jun 01, 2016
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Reply Flag
Very thorough & professional. Explained the procedure in terms that were easy to understand and most importantly the surgery he performed was a success.
What went well
No results
What could be improved
No results
7 people found this helpful
Helpful
Kevin S in Wausau, WI – May 23, 2016
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Reply
Felt like he was angry off I was there. Very rushed and short with me if I asked a question.
What went well
No results
What could be improved
No results
6 people found this helpful
Helpful
Julie in Rhinelander, WI – Apr 16, 2016
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About Me

Care Philosophy

I bring an integrated approach that provides patients of North Central Wisconsin the highest quality, technological care offered in larger institutions...Read more

Specialties

  • Ear, Nose, and Throat

Board Certifications

Education

2006
University Of Wisconsin Hospital and Clinics ~
Residency Hospital
1999
Medical College Of Wisconsin
Medical School

Awards

Frequently Asked Questions

Does Dr. Gregory Sewall, MD offer telehealth services?

Dr. Sewall has indicated that they offer telehealth. Contact the office to check for eligibility for your needs.

Is Dr. Gregory Sewall, MD accepting new patients?

Dr. Gregory Sewall, MD generally accepts new patients on Healthgrades. You can see Dr. Sewall's profile to make an appointment.

Does Dr. Gregory Sewall, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Sewall accepts your insurance.

What are Dr. Gregory Sewall, MD's top areas of care?

Dr. Sewall frequently treats Nosebleed, Outer Ear Infection, and Eustachian Tube Dysfunction. See all procedures and conditions Dr. Sewall treats.

Where is Dr. Gregory Sewall, MD's office located?

Dr. Sewall's office is located at 512 S 28th Ave, Wausau, WI 54401. Find other locations and directions on Healthgrades.

How can I make an appointment with Dr. Gregory Sewall, MD?

Find contact information here to make an appointment.

Locations

ENT & Allergy Associates, S.C.

Ent. & Allergy Associates Sc512 S 28th Ave Wausau, WI 54401
1

Ear, Nose & Throat (ENT) Associates

Ear, Nose & Throat Associates, S.C. - Medford135 S Gibson St Medford, WI 54451
2

Affiliated Hospitals

Dr. Sewall is affiliated with the following hospitals. Select a hospital below to learn more.

Learn more about how Healthgrades measuresHospital Quality.

Aspirus Medford Hospital

Medford, WI

80% Patient Experience Rating, 11% higher than the national average

Aspirus Wausau Hospital

Wausau, WI

74% Patient Experience Rating, 5% higher than the national average

7 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2020)