BRETT DENNIS GERWIN M.D.
NPI 1306992003
Ophthalmology in Chattanooga, TN

Q: What is Brett Gerwin's NPI number?

The NPI number for Brett Gerwin is 1306992003. It was assigned to this individual provider in the NPPES registry on January 26, 2007.

Q: What is Brett Gerwin's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Brett Gerwin was last updated on November 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 January 26, 2007PECOS EnrolledAccepts Medicare Assignment

97.25/100

CMS Quality Rating

979 E 3RD ST, SUITE 230, CHATTANOOGA, TN 37403(423) 521-2820(423) 602-5594 Get Directions Write a Review

NPPES record last updated: November 11, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 11, 2021, Nov 30, 2020, Jul 12, 2017 and 1 more (4 updates tracked since 2016).

On this page

About Brett Dennis Gerwin M.d. NPPES

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

BRETT DENNIS GERWIN M.D. (NPI 1306992003) is an individual ophthalmology provider in Chattanooga, Tennessee, licensed in Tennessee (45994) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Erlanger Medical Center, and is a graduate of University Of Alabama School Of Medicine (2007).

NPPES Registry Identity

NPI1306992003

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameBRETT DENNIS GERWINCredential: M.D.

Location Address979 E 3RD ST, SUITE 230Chattanooga, TN 37403-2136

Mailing Address979 E 3rd St, Suite 230Chattanooga, TN 37403-2136 · (423) 521-2820 · Fax (423) 602-5594

Phone(423) 521-2820

Fax(423) 602-5594

Sole ProprietorYes

Medical School CMSUniversity Of Alabama School Of MedicineGraduated 2007

Enumeration DateJanuary 26, 2007

Last NPPES UpdateNovember 11, 20214 updates tracked since enumeration

NPPES CertifiedNovember 11, 2021

✔ NPI 1306992003 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

Licenses✔ Licensed in TN · 45994✔ Licensed in AL · 26155

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Also ListedOphthalmology · Retina SpecialistTaxonomy 207WX0107X · License 45994 (TN)

979 E 3RD ST, Chattanooga, TN 37403

Open in Google Maps ↗

Other Identifiers 1

Medicaid1517997TN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health 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

Brett Dennis Gerwin M.d. 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 ID6901997907

PECOS Enrollment IDI20100610000567

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 13

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.

Injection, faricimab-svoa, 0.1 mg J2777

Faricimab-svoa is a medication given through an injection into the eye to treat certain eye conditions. The 0.1 mg dosage helps control disease progression, improving vision and eye health. The procedure is done by a healthcare professional.

4,860 services19 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

1,462 services476 patients

Injection of drug into eye 67028

An injection into the eye is a procedure where a medication is delivered directly into your eye to treat various conditions. A local anesthetic is applied to numb the eye, ensuring minimal discomfort. The drug helps manage diseases like macular degeneration or diabetic retinopathy.

1,135 services220 patients

Injection, bevacizumab, 10 mg J9035

Bevacizumab is a medication given through an injection. It's designed to prevent the growth of new blood vessels that cancer cells need to grow and spread. The 10 mg dose refers to the amount of the drug in the injection.

757 services147 patients

Injection, ranibizumab, 0.1 mg J2778

Ranibizumab is a medication given via injection to treat certain eye conditions like age-related macular degeneration. It works by slowing vision loss and in some cases, improving vision by blocking abnormal blood vessel growth in the eye.

645 services20 patients

Injection, aflibercept, 1 mg J0178

Aflibercept injection is a treatment for certain eye conditions that affect vision. It works by blocking abnormal blood vessel growth and leakage in the eye, which can cause vision loss. The medication is administered directly into the eye by a healthcare professional.

484 services38 patients

Established patient complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

309 services250 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

132 services132 patients

Photography of the retina 92250

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

108 services98 patients

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

63 services45 patients

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.

29 services25 patients

2d ultrasound scan of eye tissue and structures 76512

A 2D ultrasound scan of eye tissue and structures is a non-invasive procedure that uses sound waves to create images of your eye. It helps doctors to examine your eye's internal structures, detect abnormalities, and plan for treatments if needed.

20 services17 patients

Photocoagulation treatment to prevent detachment of retina 67145

Photocoagulation is a procedure used to treat retinal disorders. A special laser is directed at the retina to create small burns. These burns form scar tissue which helps to secure the retina to the eye's wall, preventing detachment and preserving vision.

13 services12 patients

Hospital Affiliations CMS Care Compare

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

Erlanger Medical Center

Acute Care Hospitals · Chattanooga, TN

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number440104

Location975 E 3rd StChattanooga, TN 37403 · Hamilton County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37403 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

$121.80 typical visit price

range $52.64 – $160.89

Typical copayment $30.45 (range $13.16 – $40.22)

Most-billed visit code 99204

Established Patient

$66.01 typical visit price

range $16.72 – $131.41

Typical copayment $16.50 (range $4.18 – $32.85)

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.

97.25/100

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

Individually scored

Quality

Promoting Interoperability

100

Improvement Activities

Reported Quality Measures

Advance Care Plan

100%196 patients5/55-star benchmark: 100%

Age-Related Macular Degeneration (AMD): Dilated Macular Examination

100%254 patients5/55-star benchmark: 100%

Documentation of Current Medications in the Medical Record

100%2,299 patients5/55-star benchmark: 100%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients combinedPopulations: 100% · 462 patients

Patients screened: 100% · 462 patients

100%24 patients5/55-star benchmark: 100%

Provide Patients Electronic Access to Their Health Information

100%749 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

DR. JEFFREY W. GEFTER M.D.

Radiology (Radiation Oncology)

979 E 3RD ST, SUITE G-20
CHATTANOOGA, TN 37403

Hamilton County (423) 756-0018

DR. LUIS FELIPE LEMUS MD

Student in an Organized Health Care Education/Training Program

979 E 3RD ST
CHATTANOOGA, TN 37403

Hamilton County (423) 778-8179

MRS. DANA WENSEL BUTLER

Nurse Practitioner (Family)

979 E 3RD ST, SUITE C 925
CHATTANOOGA, TN 37403

Hamilton County (423) 778-5910

DR. CHANNAPPA CHANDRA M.D.

Orthopaedic Surgery

979 E 3RD ST, SUITE C430
CHATTANOOGA, TN 37403

Hamilton County (423) 624-6584

DR. JASON PAUL REHM MD

Surgery (Plastic and Reconstructive Surgery)

979 E 3RD ST, SUITE C920
CHATTANOOGA, TN 37403

Hamilton County (423) 756-7134

DR. MICHAEL G CARR M.D.

Surgery (Pediatric Surgery)

979 E 3RD ST, STE 300
CHATTANOOGA, TN 37403

Hamilton County (423) 267-0466

DR. CAULEY W HAYES MD

Surgery (Surgery of the Hand)

979 E 3RD ST, SUITE C920
CHATTANOOGA, TN 37403

Hamilton County (423) 756-7134

DR. OLUKAYODE AKINLAJA M.D.

Obstetrics & Gynecology (Obstetrics)

979 E 3RD ST, SUITE C-725
CHATTANOOGA, TN 37403

Hamilton County (423) 778-2580

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Brett Gerwin's NPI number?

The NPI number for Brett Gerwin is 1306992003. It was assigned to this individual provider in the NPPES registry on January 26, 2007.

Where is Brett Gerwin located?

Brett Gerwin practices at 979 E 3rd St Suite 230, Chattanooga, TN 37403. The listed phone number is (423) 521-2820.

What is Brett Gerwin's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Brett Gerwin enrolled in Medicare?

Yes. Brett Gerwin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Brett Gerwin accept?

Health plans from Alliant Health Plans, Inc., Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Magnolia Health and Ambetter of Alabama and 4 other insurers list Brett Gerwin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Brett Gerwin affiliated with any hospitals?

According to CMS data, Brett Gerwin is affiliated with Erlanger Medical Center.

When was this NPI record last updated?

The NPPES record for Brett Gerwin was last updated on November 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.