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DR. KAITLIN JULY O'BRIEN M.D.
NPI 1891227666
Otolaryngology - Pediatric Otolaryngology in Nashville, TN

Active since March 31, 2017PECOS Enrolled
3601 THE VANDERBILT CLINIC, NASHVILLE, TN 37232(615) 322-5000 Get Directions Write a Review

NPPES record last updated: February 4, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 4, 2025, Jul 6, 2022, Sep 24, 2020 and 3 more (6 updates tracked since 2017).

About Dr. Kaitlin July O'brien M.d. NPPES

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

DR. KAITLIN JULY O'BRIEN M.D. (NPI 1891227666) is an individual pediatric otolaryngology provider in Nashville, Tennessee, licensed in Tennessee (73311) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS and maintains a secondary practice location in Kansas City.

NPPES Registry Identity

NPI1891227666
Entity TypeIndividualFemale
Primary Taxonomy207YP0228X
Provider Legal NameDR. KAITLIN JULY O'BRIENCredential: M.D.
Location Address3601 THE VANDERBILT CLINICNashville, TN 37232-4619
Mailing Address3841 Green Hills Village Dr Ste 200Nashville, TN 37215-2691
Phone(615) 322-5000
Sole ProprietorYes
Enumeration DateMarch 31, 2017
Last NPPES UpdateFebruary 4, 20256 updates tracked since enumeration
NPPES CertifiedFebruary 4, 2025
✔ NPI 1891227666 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngology · Pediatric OtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207YP0228X
Licenses✔ Licensed in TN · 73311✔ Licensed in KS · 04-47697✔ Licensed in MO · 2023014807
Definition
A pediatric otolaryngologist has special expertise in the management of infants and children with disorders that include congenital and acquired conditions involving the aerodigestive tract, nose and paranasal sinuses, the ear and other areas of the head and neck. The pediatric otolaryngologist has special skills in the diagnosis, treatment, and management of childhood disorders of voice, speech, language and hearing.
3601 THE VANDERBILT CLINIC, Nashville, TN 37232
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Secondary Practice Location 1

Location 12401 Gillham RdKansas City, MO 64108-4619 · Phone (816) 234-3040 · Fax (816) 302-9896

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 Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Kaitlin July O'brien M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Kaitlin July O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Vanderbilt University Medical Center
0.5 mi
Internal Medicine
1301 22ND AVE S
Nashville, TN 37232
  • Reassigned Medicare billing, Tennessee enrollment
  • 4,711 clinicians in this Medicare group
NPI 1104202761 (615) 936-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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. ENGLISH FLACK MD
Pediatrics (Pediatric Cardiology)
3601 THE VANDERBILT CLINIC
NASHVILLE, TN 37232
Davidson County (615) 322-3000
DANIEL K BARRETT APRN
Nurse Practitioner (Acute Care)
3601 THE VANDERBILT CLINIC
NASHVILLE, TN 37232
Davidson County (615) 322-3000
JACQUELYN L. GARNER PNP
Nurse Practitioner (Pediatrics)
3601 THE VANDERBILT CLINIC
NASHVILLE, TN 37232
Davidson County (615) 322-3000
DR. ROBERT JAMES LENTZ M.D.
Internal Medicine (Pulmonary Disease)
3601 THE VANDERBILT CLINIC
NASHVILLE, TN 37232
Davidson County (615) 322-3000
LYNN HOLLIDAY M.D.
Family Medicine
3601 THE VANDERBILT CLINIC
NASHVILLE, TN 37232
Davidson County (615) 322-3000
DR. HEATHER KRETH PSY.D
Psychologist (Clinical Child & Adolescent)
3601 THE VANDERBILT CLINIC
NASHVILLE, TN 37232
Davidson County (615) 936-2000
AARON WESLEY SCOTT APN
Nurse Practitioner
3601 THE VANDERBILT CLINIC
NASHVILLE, TN 37232
Davidson County (615) 936-2000
DR. COLLEEN M KIERNAN M.D.
Surgery (Surgical Oncology)
3601 THE VANDERBILT CLINIC
NASHVILLE, TN 37232
Davidson County (615) 322-3000

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 Kaitlin July O'brien's NPI number?

The NPI number for Kaitlin July O'brien is 1891227666. It was assigned to this individual provider in the NPPES registry on March 31, 2017.

Where is Kaitlin July O'brien located?

Kaitlin July O'brien practices at 3601 The Vanderbilt Clinic, Nashville, TN 37232. The listed phone number is (615) 322-5000.

What is Kaitlin July O'brien's specialty?

The primary specialty registered for this NPI is Otolaryngology, specializing in Pediatric Otolaryngology, with taxonomy code 207YP0228X.

Is Kaitlin July O'brien enrolled in Medicare?

Yes. Kaitlin July O'brien is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Kaitlin July O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kaitlin July O'brien reassigns Medicare benefits to Vanderbilt University Medical Center (Nashville, TN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Kaitlin July O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kaitlin July O'brien accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter of Alabama and Ambetter of North Carolina and 5 other insurers list Kaitlin July O'brien 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.

When was this NPI record last updated?

The NPPES record for Kaitlin July O'brien was last updated on February 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.