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

LANGDON STONE M.D.
NPI 1386064590
Internal Medicine - Nephrology in Dallas, TX

Q: What is Langdon Stone's NPI number?

The NPI number for Langdon Stone is 1386064590. It was assigned to this individual provider in the NPPES registry on April 27, 2014.

Q: What is Langdon Stone's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Langdon Stone was last updated on October 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since April 27, 2014PECOS Enrolled

74.59/100

CMS Quality Rating

4900 HARRY HINES BLVD, DALLAS, TX 75284(214) 232-9296 Get Directions Write a Review

NPPES record last updated: October 1, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

Record update history: Oct 1, 2026, Jun 3, 2019 (2 updates tracked since 2019).

On this page

About Langdon Stone M.d. NPPES

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

LANGDON STONE M.D. (NPI 1386064590) is an individual nephrology provider in Dallas, Texas, licensed in Texas (R4905) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1386064590

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameLANGDON STONECredential: M.D.

Location Address4900 HARRY HINES BLVDDallas, TX 75284-7208

Mailing AddressPo Box 845347Dallas, TX 75284-7208

Phone(214) 232-9296

Sole ProprietorNo

Enumeration DateApril 27, 2014

Last NPPES UpdateOctober 1, 20262 updates tracked since enumeration

NPPES CertifiedOctober 1, 2026

✔ NPI 1386064590 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in TX · R4905

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

4900 HARRY HINES BLVD, Dallas, TX 75284

Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Langdon Stone 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75284 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

$131.01 typical visit price

range $57.18 – $172.86

Typical copayment $32.75 (range $14.29 – $43.21)

Most-billed visit code 99204

Established Patient

$100.80 typical visit price

range $18.48 – $141.20

Typical copayment $25.20 (range $4.62 – $35.30)

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.

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.

74.59/100

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

Scored as part of a group practice

Quality

56.12

Promoting Interoperability

100

Improvement Activities

Cost

59.2

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

4 suppliers11 claims11 services$66.79 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Langdon Stone's NPI number?

The NPI number for Langdon Stone is 1386064590. It was assigned to this individual provider in the NPPES registry on April 27, 2014.

Where is Langdon Stone located?

Langdon Stone practices at 4900 Harry Hines Blvd, Dallas, TX 75284. The listed phone number is (214) 232-9296.

What is Langdon Stone's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Langdon Stone enrolled in Medicare?

Yes. Langdon Stone is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Langdon Stone was last updated on October 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.