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RYAN ALEXANDER SULLIVAN DO
NPI 1376246637
Internal Medicine in Nashville, TN

Active since March 24, 2023PECOS Enrolled
4220 HARDING PIKE, NASHVILLE, TN 37205(615) 222-2111 Get Directions Write a Review

NPPES record last updated: June 28, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 30, 2026, Apr 5, 2023, Mar 24, 2023 (3 updates tracked since 2023).

About Ryan Alexander Sullivan Do NPPES

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

RYAN ALEXANDER SULLIVAN DO (NPI 1376246637) is an individual internal medicine provider in Nashville, Tennessee, licensed in Tennessee (6776) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS, is affiliated with Ascension Saint Thomas Hospital, and is a graduate of Other (2023).

NPPES Registry Identity

NPI1376246637
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameRYAN ALEXANDER SULLIVANCredential: DO
Location Address4220 HARDING PIKENashville, TN 37205-2005
Mailing Address4220 Harding PikeNashville, TN 37205-2005 · (615) 222-2111
Phone(615) 222-2111
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateMarch 24, 2023
Last NPPES UpdateJune 28, 20263 updates tracked since enumeration
NPPES CertifiedJune 28, 2026
✔ NPI 1376246637 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TN · 6776
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4220 HARDING PIKE, Nashville, TN 37205
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health, Oscar Insurance Company.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ryan Alexander Sullivan Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7810355401
PECOS Enrollment IDI20260722003063
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 Reassignments

2

Medicare enrollment records show Ryan Sullivan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Beaman Physician Services, PC
Same address
Hospitalist
4220 HARDING PIKE
Nashville, TN 37205
  • Reassigned Medicare billing, Tennessee enrollment
  • 97 clinicians in this Medicare group
NPI 1487342242 (615) 222-2111
Warner Physician Services PC
2.9 mi
Hospitalist
2000 CHURCH ST
Nashville, TN 37236
  • Reassigned Medicare billing, Tennessee enrollment
  • 85 clinicians in this Medicare group
NPI 1770272221 (615) 284-5555

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

Hospital Affiliations CMS Care Compare

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

Ascension Saint Thomas Hospital

Acute Care Hospitals · Nashville, TN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number440082
Location4220 Harding Rd, PO Box 380Nashville, TN 37205 · Davidson County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37205 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
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
Most-billed visit code 99214
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.

MEGAN DESAI M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
4220 HARDING PIKE
NASHVILLE, TN 37205
Davidson County (615) 222-6726
WILLIAM MATTHEW BIBB PHARM.D., BCGP
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
4220 HARDING PIKE
NASHVILLE, TN 37205
Davidson County (615) 222-3764
CHELSEY P MARTIN CSFA
Specialist/Technologist, Other (Surgical Assistant)
4220 HARDING PIKE
NASHVILLE, TN 37205
Davidson County (616) 222-2111
DR. MATTHEW SCHUYLER-AUSTIN JOSEPH MD
Hospitalist
4220 HARDING PIKE, SUITE 500
NASHVILLE, TN 37205
Davidson County (615) 222-6977
CHRISTOPHER JUNSIK SHIN MD
Internal Medicine
4220 HARDING PIKE
NASHVILLE, TN 37205
Davidson County (615) 222-2111
KELLEY BAXTER PHARMD
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
4220 HARDING PIKE
NASHVILLE, TN 37205
Davidson County (615) 222-4711
GREGG CHRISTIAN SHEPARD MD
Internal Medicine (Hematology & Oncology)
4220 HARDING PIKE, S&E BUILDING SUITE 200
NASHVILLE, TN 37205
Davidson County (615) 385-3751
JESSICA TAYLOR HODGE PA-C
Physician Assistant
4220 HARDING PIKE
NASHVILLE, TN 37205
Davidson County (615) 222-2111

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 Ryan Sullivan's NPI number?

The NPI number for Ryan Sullivan is 1376246637. It was assigned to this individual provider in the NPPES registry on March 24, 2023.

Where is Ryan Sullivan located?

Ryan Sullivan practices at 4220 Harding Pike, Nashville, TN 37205. The listed phone number is (615) 222-2111.

What is Ryan Sullivan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Ryan Sullivan enrolled in Medicare?

Yes. Ryan Sullivan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Ryan Sullivan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Sullivan reassigns Medicare benefits to 2 organizations: Beaman Physician Services, PC (Nashville, TN) and Warner Physician Services PC (Nashville, TN). Each 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 Ryan Sullivan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ryan Sullivan accept?

Health plans from Oscar Health and Oscar Insurance Company list Ryan Sullivan 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 Ryan Sullivan affiliated with any hospitals?

According to CMS data, Ryan Sullivan is affiliated with Ascension Saint Thomas Hospital.

When was this NPI record last updated?

The NPPES record for Ryan Sullivan was last updated on June 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.