JOHN W LOCKE MD
NPI 1174057343
Internal Medicine - Gastroenterology in Nashville, TN

Q: What is John Locke's NPI number?

The NPI number for John Locke is 1174057343. It was assigned to this individual provider in the NPPES registry on April 14, 2017.

Q: What is John Locke's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for John Locke was last updated on July 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since April 14, 2017PECOS Enrolled

222 22ND AVE N, NASHVILLE, TN 37203(629) 255-2062(629) 255-4078 Get Directions Write a Review

NPPES record last updated: July 1, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 10, 2022, Apr 9, 2019, Apr 14, 2017 (3 updates tracked since 2017).

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About John W Locke Md NPPES

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

JOHN W LOCKE MD (NPI 1174057343) is an individual gastroenterology provider in Nashville, Tennessee, licensed in Tennessee (76670) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1174057343

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameJOHN W LOCKECredential: MD

Location Address222 22ND AVE NNashville, TN 37203-1802

Mailing Address222 22nd Ave NNashville, TN 37203-1802 · (629) 255-3486 · Fax (629) 255-4000

Phone(629) 255-2062

Fax(629) 255-4078

Sole ProprietorNo

Enumeration DateApril 14, 2017

Last NPPES UpdateJuly 1, 20263 updates tracked since enumeration

NPPES CertifiedJuly 1, 2026

✔ NPI 1174057343 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in TN · 76670

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

222 22ND AVE N, Nashville, TN 37203

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of Tennessee, 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)

John W Locke Md 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 Reassignments

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

Heritage Medical Associates PC

0.1 mi

Internal Medicine

222 22ND AVE N
Nashville, TN 37203

Reassigned Medicare billing, Tennessee enrollment
183 clinicians in this Medicare group

NPI 1548284060 (629) 255-3486

University Of Alabama Health Services Foundation, PC

173 mi

Clinical Medical Laboratory

720 20TH STREET SOUTH
Birmingham, AL 35294

Reassigned Medicare billing, Alabama enrollment
4,494 clinicians in this Medicare group

NPI 1366638330 (205) 934-4983

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37203 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.

JOHN BRIGHT CAGE M.D.

Internal Medicine (Cardiovascular Disease)

222 22ND AVE N, STE 400
NASHVILLE, TN 37203

Davidson County (615) 329-5144

JOSEPH P PARKER M.D.

Internal Medicine (Gastroenterology)

222 22ND AVE N
NASHVILLE, TN 37203

Davidson County (629) 255-2156

ROBERT L LEDFORD JR. M.D.

Internal Medicine

222 22ND AVE N
NASHVILLE, TN 37203

Davidson County (629) 255-2151

DR. DOUGLAS P MITCHELL M.D.

Internal Medicine (Gastroenterology)

222 22ND AVE N, SUITE 100
NASHVILLE, TN 37203

Davidson County (615) 324-2156

DR. KEVIN MARK RANKIN M.D.

Internal Medicine (Cardiovascular Disease)

222 22ND AVE N, STE 400
NASHVILLE, TN 37203

Davidson County (615) 329-5144

WESLEY CLARK RAY M.D.

Internal Medicine

222 22ND AVE N
NASHVILLE, TN 37203

Davidson County (629) 255-2153

ERIN C REBELE MD

Obstetrics & Gynecology

222 22ND AVE N
NASHVILLE, TN 37203

Davidson County (629) 255-2194

LAURA H WILE M.D.

Internal Medicine

222 22ND AVE N
NASHVILLE, TN 37203

Davidson County (629) 255-2177

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 John Locke's NPI number?

The NPI number for John Locke is 1174057343. It was assigned to this individual provider in the NPPES registry on April 14, 2017.

Where is John Locke located?

John Locke practices at 222 22nd Ave N, Nashville, TN 37203. The listed phone number is (629) 255-2062.

What is John Locke's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is John Locke enrolled in Medicare?

Yes. John Locke is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for John Locke's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Locke reassigns Medicare benefits to 2 organizations: Heritage Medical Associates PC (Nashville, TN) and University Of Alabama Health Services Foundation, PC (Birmingham, AL). 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 John Locke's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Locke accept?

Health plans from BlueCross BlueShield of Tennessee and Oscar Insurance Company list John Locke 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 John Locke was last updated on July 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.