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

J PHILLIP MYATT MD PLLC
NPI 1255674586
Internal Medicine - Cardiovascular Disease in Waco, TX

Active since April 04, 2013CLIA 45D2203802 · Waiver
321 RICHLAND WEST CIR, WACO, TX 76712(254) 235-9355(254) 235-2135 Get Directions Write a Review

NPPES record last updated: October 6, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 6, 2026, Mar 19, 2026, Feb 24, 2020 (3 updates tracked since 2020).

About J Phillip Myatt Md Pllc NPPES

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

J PHILLIP MYATT MD PLLC (NPI 1255674586) is a healthcare organization registered as a cardiovascular disease in Waco, Texas and active in the NPI registry since April 2013. The organization holds a CLIA Waiver certificate valid through December 5, 2026, maintains 10 additional practice locations, and lists James Phillip Myatt, Owner, as its authorized official.

NPPES Registry Identity

NPI1255674586
Entity TypeOrganization
Primary Taxonomy207RC0000X
Legal Business NameJ PHILLIP MYATT MD PLLC
Location Address321 RICHLAND WEST CIRWaco, TX 76712-7919
Mailing Address321 Richland West CirWaco, TX 76712-7919 · (254) 235-9355 · Fax (254) 235-2135
Fax(254) 235-2135
Organization SubpartNo
Authorized OfficialJames Phillip MyattOwner · (254) 235-9355
Enumeration DateApril 4, 2013
Last NPPES UpdateOctober 6, 20263 updates tracked since enumeration
NPPES CertifiedOctober 6, 2026
✔ NPI 1255674586 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in TX · N1791
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedInternal MedicineTaxonomy 207R00000X · License N1791 (TX)
321 RICHLAND WEST CIR, Waco, TX 76712

Secondary Practice Locations 10

Location 11008 NE Big Bend Trl Ste 400Glen Rose, TX 76043-4947 · Phone (254) 235-9355 · Fax (833) 973-4609
Location 21122 E Loop 304Crockett, TX 75835-1810 · Phone (254) 235-9355 · Fax (833) 973-4609
Location 310201 Highway 16Comanche, TX 76442-4462 · Phone (254) 235-9355 · Fax (833) 973-4609
Location 4160 River North BlvdStephenville, TX 76401-1803 · Phone (254) 235-9355
Location 51323 E Franklin St Ste 103Hillsboro, TX 76645-2679 · Phone (254) 235-9355 · Fax (833) 973-4609
Location 6602 N Main StRockdale, TX 76567-2392 · Phone (254) 235-9355 · Fax (833) 973-4609
Location 7514 S Bonham StMexia, TX 76667-3600 · Phone (254) 235-9355 · Fax (833) 973-4609
Location 8201 Posey AveClifton, TX 76634-1200 · Phone (254) 235-9355 · Fax (833) 973-4609
Location 9625 McClintic DrGroesbeck, TX 76642-2135 · Phone (254) 235-9355 · Fax (833) 973-4609
Location 10764 W Commerce StFairfield, TX 75840-1428 · Phone (254) 235-9355 · Fax (833) 973-4609

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

J Phillip Myatt Md Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by February 28, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateTexasEnrollment IDO20130904000088Non-DME Part B · Clinic/Group PracticeDue dateFebruary 28, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

7

Medicare enrollment records show 7 clinicians reassign Medicare billing to J Phillip Myatt MD PLLC, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.

Clinicians, nearest first (7)

Nurse Practitioner
NPI 1568620987
321 RICHLAND WEST CIR
Waco, TX 76712
(513) 282-9239
✔ PECOS✔ Accepts MedicareSame address
Cardiovascular Disease (Cardiology)
NPI 1770567976
321 RICHLAND WEST CIR
Waco, TX 76712
(254) 235-9355
✔ PECOS✔ Accepts MedicareSame address
Cardiovascular Disease (Cardiology)
NPI 1386692689
321 RICHLAND WEST CIR
Waco, TX 76712
(254) 235-9355
✔ PECOS✔ Accepts MedicareSame address
Cardiovascular Disease (Cardiology)
NPI 1871778001
321 RICHLAND WEST CIR
Waco, TX 76712
(254) 235-9355
✔ PECOS✔ Accepts MedicareSame address
Cardiovascular Disease (Cardiology)
NPI 1134573637
900 8TH AVE
Fort Worth, TX 76104
(817) 877-5292
✔ PECOS✔ Accepts Medicare85 mi
Cardiac Electrophysiology
NPI 1518942226
5656 BEE CAVES RD., BLDG. J, SUITE 201
Austin, TX 78746
(512) 381-0170
✔ PECOS✔ Accepts Medicare92 mi
Cardiac Electrophysiology
NPI 1912982018
4316 JAMES CASEY BLDG, C, SUITE 201
Austin, TX 78745
(512) 381-0170
✔ PECOS✔ Accepts Medicare95 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 45D2203802

J Phillip Myatt MD PLLC Dba Waco Heart & Vascular · Waco, TX
Active · expires Dec 5, 2026
CLIA Number45D2203802
Laboratory TypePhysician Office
Certificate Effective DateDecember 6, 2024
Certificate Expiration DateDecember 5, 2026
Laboratory DirectorPhillip J. Myatt
Laboratory Phone(254) 235-9355
Laboratory LocationJ Phillip Myatt MD PLLC Dba Waco Heart & Vascular321 Richland W Cir, Waco, TX 76712
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 J Phillip Myatt MD PLLC's NPI number?

The NPI number for J Phillip Myatt MD PLLC is 1255674586. It was assigned to this organization in the NPPES registry on April 4, 2013.

Where is J Phillip Myatt MD PLLC located?

J Phillip Myatt MD PLLC is located at 321 Richland West Cir, Waco, TX 76712. The listed phone number is (254) 235-9355.

What is J Phillip Myatt MD PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is J Phillip Myatt MD PLLC enrolled in Medicare?

Yes. J Phillip Myatt MD PLLC is registered in the Medicare PECOS enrollment system.

When is J Phillip Myatt MD PLLC's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Texas, Clinic/Group Practice) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through J Phillip Myatt MD PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 3 Medicare specialties reassign their Medicare billing to J Phillip Myatt MD PLLC. A 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 the clinician's services. The largest specialties are Cardiovascular Disease (Cardiology) (4), Cardiac Electrophysiology (2) and Nurse Practitioner (1). Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does J Phillip Myatt MD PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D2203802) is associated with this NPI, valid through December 5, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does J Phillip Myatt MD PLLC accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma list J Phillip Myatt MD PLLC 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 J Phillip Myatt MD PLLC was last updated on October 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.