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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GRAYSON BRENEMAN ASHBY MD
NPI 1598414641
Ophthalmology - Pediatric Ophthalmology and Strabismus Specialist in Nashville, TN

Active since March 23, 2022PECOS EnrolledAccepts Medicare Assignment
1301 MEDICAL CENTER DR, NASHVILLE, TN 37232(615) 322-3000 Get Directions Write a Review

NPPES record last updated: July 7, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 7, 2026, Jul 11, 2023 (2 updates tracked since 2023).

About Grayson Breneman Ashby Md NPPES

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

GRAYSON BRENEMAN ASHBY MD (NPI 1598414641) is an individual pediatric ophthalmology and strabismus specialist in Nashville, Tennessee, licensed in Tennessee (77046) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Hospital Rochester, and maintains a secondary practice location in Rochester.

NPPES Registry Identity

NPI1598414641
Entity TypeIndividualMale
Primary Taxonomy207WX0110X
Provider Legal NameGRAYSON BRENEMAN ASHBYCredential: MD
Location Address1301 MEDICAL CENTER DRNashville, TN 37232-0028
Mailing Address3841 Green Hills Village Dr Ste 200Nashville, TN 37215-2691 · (615) 322-6842 · Fax (615) 322-5048
Phone(615) 322-3000
Sole ProprietorNo
Medical School CMSMayo Medical SchoolGraduated 2022
Enumeration DateMarch 23, 2022
Last NPPES UpdateJuly 7, 20262 updates tracked since enumeration
NPPES CertifiedJuly 7, 2026
✔ NPI 1598414641 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOphthalmology · Pediatric Ophthalmology and Strabismus SpecialistAllopathic & Osteopathic Physicians
Taxonomy Code207WX0110X
License✔ Licensed in TN · 77046
Definition
An ophthalmologist who specializes in pediatric ophthalmology and strabismus management. The subspecialty includes the medical and surgical management of eye disorders found in children. Some of the more common disorders include amblyopia, strabismus, refractive error, cataract and glaucoma. These disorders may be related to neurological and endocrinological diseases, trauma, or aging changes in the extraocular muscles requiring medical, optical and surgical management.
Also ListedOphthalmologyTaxonomy 207W00000X · License 32438 (MN), 74599 (MN)
1301 MEDICAL CENTER DR, Nashville, TN 37232
Open in Google Maps ↗

Secondary Practice Location 1

Location 1200 1st St SWRochester, MN 55905-0001 · Phone (507) 284-2511

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

Grayson Breneman Ashby 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 ID5092196642
PECOS Enrollment IDI20230801002755
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 6

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.
95 services66 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
42 services27 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.
34 services23 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.
21 services19 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
15 services15 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.
12 services12 patients

Hospital Affiliations CMS Care Compare

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

Mayo Clinic Hospital Rochester

Acute Care Hospitals · Rochester, MN
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number240010
Location1216 Second Street SouthwestRochester, MN 55902 · Olmsted County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37232 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.

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.

JORDAN MCKENZIE-SOLIS APRN, AGACNP-BC
Nurse Practitioner (Gerontology)
1301 MEDICAL CENTER DR
NASHVILLE, TN 37232
Davidson County (615) 322-3000
DR. TAYLOR MCKINLEY CHANEY DO
Internal Medicine (Nephrology)
1301 MEDICAL CENTER DR
NASHVILLE, TN 37232
Davidson County (615) 322-5000
DR. LAURA ARTIM
Psychiatry & Neurology (Psychiatry)
1301 MEDICAL CENTER DR
NASHVILLE, TN 37232
Davidson County (615) 322-3000
JENA MCDANIEL PHD, CCC-SLP
Speech-Language Pathologist
1301 MEDICAL CENTER DR
NASHVILLE, TN 37232
Davidson County (615) 322-3000
DR. HOLLY ENDE M.D.
Anesthesiology
1301 MEDICAL CENTER DR, 4648 TVC
NASHVILLE, TN 37232
Davidson County (225) 936-9765
CHRISTOPHER ALESSIA DO
Physical Medicine & Rehabilitation
1301 MEDICAL CENTER DR
NASHVILLE, TN 37232
Davidson County (615) 322-5000
JESSICA LOUISE BARRETT PA-C
Physician Assistant (Medical)
1301 MEDICAL CENTER DR
NASHVILLE, TN 37232
Davidson County (615) 322-5000
DR. JAMES ALEXANDER GOSS MD
Hospitalist
1301 MEDICAL CENTER DR
NASHVILLE, TN 37232
Davidson County (615) 322-5000

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 Grayson Ashby's NPI number?

The NPI number for Grayson Ashby is 1598414641. It was assigned to this individual provider in the NPPES registry on March 23, 2022.

Where is Grayson Ashby located?

Grayson Ashby practices at 1301 Medical Center Dr, Nashville, TN 37232. The listed phone number is (615) 322-3000.

What is Grayson Ashby's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Pediatric Ophthalmology and Strabismus Specialist, with taxonomy code 207WX0110X.

Is Grayson Ashby enrolled in Medicare?

Yes. Grayson Ashby 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.

Is Grayson Ashby affiliated with any hospitals?

According to CMS data, Grayson Ashby is affiliated with Mayo Clinic Hospital Rochester.

When was this NPI record last updated?

The NPPES record for Grayson Ashby was last updated on July 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 days 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.