GREGORY K SEWALL MD
NPI 1336195023
Otolaryngology in Wausau, WI

Q: What is Gregory Sewall's NPI number?

The NPI number for Gregory Sewall is 1336195023. It was assigned to this individual provider in the NPPES registry on May 25, 2006.

Q: What is Gregory Sewall's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Sewall was last updated on April 13, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 25, 2006PECOS EnrolledAccepts Medicare Assignment

83.2/100

CMS Quality Rating

512 S 28TH AVE, WAUSAU, WI 54401(715) 847-2021(715) 847-2325 Get Directions Write a Review

NPPES record last updated: April 13, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Gregory K Sewall Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY K SEWALL MD (NPI 1336195023) is an individual otolaryngology provider in Wausau, Wisconsin, licensed in Wisconsin (42332-020) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Aspirus Wausau Hospital, and is a graduate of Medical College Of Wisconsin (1999).

NPPES Registry Identity

NPI1336195023

Entity TypeIndividualMale

Primary Taxonomy207Y00000X

Provider Legal NameGREGORY K SEWALLCredential: MD

Location Address512 S 28TH AVEWausau, WI 54401-4147

Mailing Address512 S 28th AveWausau, WI 54401-4147 · (715) 847-2021 · Fax (715) 847-2325

Phone(715) 847-2021

Fax(715) 847-2325

Sole ProprietorNo

Medical School CMSMedical College Of WisconsinGraduated 1999

Enumeration DateMay 25, 2006

Last NPPES UpdateApril 13, 2020

NPPES CertifiedApril 13, 2020

✔ NPI 1336195023 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians

Taxonomy Code207Y00000X

License✔ Licensed in WI · 42332-020

Definition

An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.

512 S 28TH AVE, Wausau, WI 54401

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, HealthPartners and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory K Sewall Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID547263402

PECOS Enrollment IDI20060814000397

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

60 services47 patients

Diagnostic exam of voice box using a flexible endoscope 31575

This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.

48 services44 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

45 services45 patients

Diagnostic exam of nasal passages using an endoscope 31231

A diagnostic exam of nasal passages using an endoscope is a non-invasive procedure. A small, flexible tube with a light and camera at the end, called an endoscope, is inserted into the nose. This allows the doctor to view the nasal passages and sinuses, helping to identify any issues.

33 services29 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

26 services21 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

15 services15 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Aspirus Wausau Hospital

Acute Care Hospitals · Wausau, WI

4/5 CMS rating

OwnershipProprietary

CMS Certification Number520030

Location333 Pine Ridge BlvdWausau, WI 54401 · Marathon County

Emergency services Birthing friendly

Howard Young Medical Center

Acute Care Hospitals · Woodruff, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number520091

Location240 Maple StWoodruff, WI 54568 · Vilas County

Emergency services

Aspirus Medford Hospital & Clinics, Inc

Critical Access Hospitals · Medford, WI

OwnershipVoluntary non-profit - Private

CMS Certification Number521324

Location135 S Gibson StMedford, WI 54451 · Taylor County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$123.69 typical visit price

range $53.90 – $163.24

Typical copayment $30.92 (range $13.47 – $40.81)

Most-billed visit code 99204

Established Patient

$67.37 typical visit price

range $17.40 – $133.76

Typical copayment $16.84 (range $4.35 – $33.44)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

83.2/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

80.78

Promoting Interoperability

100

Improvement Activities

Cost

63.24

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NIKOLENE JOHNSON

Physician Assistant