GREGORY NORMAN MESSNER D.O.
NPI 1376572867
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Plano, TX

Q: What is Gregory Messner's NPI number?

The NPI number for Gregory Messner is 1376572867. It was assigned to this individual provider in the NPPES registry on June 30, 2006.

Q: What is Gregory Messner's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Messner was last updated on December 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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 June 30, 2006PECOS EnrolledAccepts Medicare Assignment

4708 DEXTER DR STE 350, PLANO, TX 75093(469) 750-8041(469) 750-3057 Get Directions Write a Review

NPPES record last updated: December 22, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 22, 2025, Oct 14, 2023, Sep 1, 2023 and 3 more (6 updates tracked since 2016).

On this page

About Gregory Norman Messner D.o. NPPES

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

GREGORY NORMAN MESSNER D.O. (NPI 1376572867) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Plano, Texas, licensed in Texas (K5159) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Limestone Medical Center, and maintains 5 additional practice locations.

NPPES Registry Identity

NPI1376572867

Entity TypeIndividualMale

Primary Taxonomy208G00000X

Provider Legal NameGREGORY NORMAN MESSNERCredential: D.O.

Location Address4708 DEXTER DR STE 350Plano, TX 75093-5288

Mailing Address6717 Columbine WayPlano, TX 75093-6347 · (469) 750-8041 · Fax (469) 750-3057

Phone(469) 750-8041

Fax(469) 750-3057

Sole ProprietorNo

Medical School CMSOtherGraduated 1995

Enumeration DateJune 30, 2006

Last NPPES UpdateDecember 22, 20256 updates tracked since enumeration

NPPES CertifiedDecember 22, 2025

✔ NPI 1376572867 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians

Taxonomy Code208G00000X

License✔ Licensed in TX · K5159

Definition

A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.

Also ListedEmergency MedicineTaxonomy 207P00000X · License K5159 (TX)

Also ListedSurgery · Vascular SurgeryTaxonomy 2086S0129X · License K5159 (TX)

4708 DEXTER DR STE 350, Plano, TX 75093

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Secondary Practice Locations 5

Location 13319 Unicorn Lake Blvd Ste 111Denton, TX 76210-0121 · Phone (281) 888-8999 · Fax (281) 305-4054

Location 21810 Murchison Dr Ste 104El Paso, TX 79902-2906 · Phone (281) 888-8999 · Fax (281) 305-4054

Location 32270 Matlock Rd Ste 104Mansfield, TX 76063-3710 · Phone (281) 888-8999 · Fax (281) 305-4054

Location 41924 Forest Ridge Dr Ste 300Bedford, TX 76021-8227 · Phone (281) 888-8999 · Fax (281) 305-4054

Location 53600 Conflans Rd Ste 103Irving, TX 75061-6324 · Phone (469) 750-8041 · Fax (469) 750-3057

Other Identifiers 4

Other8U9393TX · Bcbs

Medicaid149924601TX

OtherP00715572TX · Rr Medicare Pin

OtherK5159TX · Medical License

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections 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 and accepts Medicare assignment

Gregory Norman Messner D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6507800786

PECOS Enrollment IDI20050617000827

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 Gregory Messner reassigns Medicare billing to 14 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Doctor Greg Messner PLLC

18 mi

Thoracic Surgery (Cardiothoracic Vascular Surgery)

3600 CONFLANS RD STE 103
Irving, TX 75061

Reassigned Medicare billing, Texas enrollment

NPI 1275084618 (469) 750-8041

Nirp Dallas-Fort Worth PLLC

24 mi

Interventional Cardiology

1924 FOREST RIDGE DRIVE, STE 300
Dallas, TX 76021

Reassigned Medicare billing, Texas enrollment
26 clinicians in this Medicare group

NPI 1992260277 (281) 888-8999

Southwest Medical Associates, Inc.

141 mi

Emergency Medicine

1207 S BAILEY ST
Electra, TX 76360

Reassigned Medicare billing, Texas enrollment
155 clinicians in this Medicare group

NPI 1831299122 (940) 495-3981

Nirp Woodlands PLLC

209 mi

Interventional Cardiology

17191 ST LUKES WAY STE 280
Conroe, TX 77384

Reassigned Medicare billing, Texas enrollment
26 clinicians in this Medicare group

NPI 1346705639 (281) 888-8999

Nirp Sugar Land PLLC

246 mi

Interventional Cardiology

7616 BRANFORD PL STE 140
Sugar Land, TX 77479

Reassigned Medicare billing, Texas enrollment
26 clinicians in this Medicare group

NPI 1174077598 (281) 888-8999

Nirp Pasadena, PLLC

250 mi

Interventional Cardiology

3412 BURKE RD # 100
Pasadena, TX 77504

Reassigned Medicare billing, Texas enrollment
28 clinicians in this Medicare group

NPI 1912366097 (281) 888-8999

Nirp Beaumont, PLLC

257 mi

Interventional Cardiology

755 S 11TH ST STE 100A
Beaumont, TX 77701

Reassigned Medicare billing, Texas enrollment
27 clinicians in this Medicare group

NPI 1609392430 (281) 888-8999

Nirp Victoria PLLC

292 mi

Interventional Cardiology

1908 N LAURENT ST STE 120
Victoria, TX 77901

Reassigned Medicare billing, Texas enrollment
26 clinicians in this Medicare group

NPI 1407354699 (281) 888-8999

Concord Medical Group PLLC

296 mi

Emergency Medicine

1602 AVENUE Q
Lubbock, TX 79401

Reassigned Medicare billing, Texas enrollment
1,338 clinicians in this Medicare group

NPI 1083630610 (888) 264-0330

Concord Medical Group Of Texas PLLC

296 mi

Emergency Medicine

1602 AVENUE Q
Lubbock, TX 79401

Reassigned Medicare billing, Texas enrollment
1,439 clinicians in this Medicare group

NPI 1750790762 (888) 264-0330

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

Areas of Expertise CMS Part B claims 27

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes 99153

This service involves a physician administering medication to lower your consciousness during a procedure. It's done for your comfort and safety. The drug's effects last about 15 minutes, so additional doses may be given as needed.

371 services82 patients

Ultrasound evaluation of blood vessel with review by radiologist, each additional vessel 37253

An ultrasound evaluation of a blood vessel is a non-invasive procedure that uses sound waves to create images of your blood vessels. A radiologist reviews these images to check for any abnormalities. If additional vessels need reviewing, the process is repeated.

245 services40 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

154 services82 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

150 services83 patients

Ultrasound evaluation of blood vessel with review by radiologist, initial vessel 37252

This procedure involves using ultrasound, a safe imaging technique, to examine your blood vessels. The images are then reviewed by a radiologist, a doctor specialized in medical imaging. The process helps identify any abnormalities in your initial vessel.

77 services41 patients

Emergency department visit with moderate level of medical decision making 99284

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

73 services71 patients

Insertion of tube into vein, second order branch 36012

This procedure involves placing a tube into a vein, specifically a second order branch, which is a smaller vein branching off a main one. It's done to administer medications or fluids, or to collect blood samples. It's a common, typically painless procedure performed under sterile conditions.

67 services38 patients

Removal of plaque in artery of leg, initial vessel 37229

This procedure involves removing plaque from the initial vessel in your leg. Plaque, a build-up of fat, cholesterol, and other substances, can block blood flow. The removal process, known as an angioplasty, restores healthy blood circulation in your leg.

64 services46 patients

Emergency department visit with high level of medical decision making 99285

An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.

64 services61 patients

Insertion of stent in vein with review by radiologist, initial vein 37238

A stent insertion in a vein is a procedure where a small, mesh tube is placed within your vein to keep it open. This helps improve blood flow. A radiologist, a doctor specialized in imaging technology, will review the procedure to ensure the stent is correctly positioned.

60 services34 patients

Review by radiologist of both arms or legs arteries image 75716

This procedure involves a radiologist examining images of your arm or leg arteries. These images help identify any blockages or abnormalities in the blood vessels that could affect circulation. It's a vital step in diagnosing conditions related to blood flow.

56 services49 patients

Review by radiologist of abdominal aorta image 75625

This is a procedure where a radiologist, a doctor specialized in medical imaging, examines an image of your abdominal aorta. The abdominal aorta is the large blood vessel that carries blood to your lower body. The radiologist checks for any abnormalities to ensure your overall vascular health.

54 services50 patients

Injection of chemical agent into single incompetent vein of leg using ultrasound guidance 36465

This procedure involves injecting a chemical agent into a non-functioning vein in your leg. Ultrasound technology is used to accurately locate the vein. The chemical helps to close off the vein, rerouting blood flow to healthier veins.

41 services20 patients

Review by radiologist of both arms and legs veins of both arms or legs image 75822

This procedure involves a radiologist examining images of veins in your arms and legs. These images can help identify any abnormalities or issues with blood flow. The process is non-invasive and painless, providing valuable information for your healthcare.

29 services26 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

28 services26 patients

Removal of plaque in arteries of leg 37225

This procedure, known as atherectomy, involves clearing out plaque buildup in the leg arteries. Plaque can restrict blood flow, causing discomfort and potential health issues. A special device is inserted into the artery to carefully remove the plaque, improving blood circulation.

27 services21 patients

Review by radiologist of major lower body vein image 75825

This procedure involves a radiologist examining an image of a large vein in your lower body. The radiologist uses this image to identify any abnormalities or issues that may affect your health. The procedure is painless and non-invasive, providing valuable information for your healthcare.

27 services20 patients

Removal of plaque and insertion of stents in arteries of leg 37227

This procedure, known as angioplasty, involves a small tube being inserted into your leg artery. The tube has a tiny balloon that inflates to remove plaque blocking the artery. A stent (a small mesh tube) is then placed to keep the artery open, improving blood flow.

25 services21 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

24 services21 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

24 services18 patients

Removal of plaque in artery of leg, each additional vessel 37233

This procedure involves eliminating plaque buildup in your leg arteries to improve blood flow. If more than one vessel is affected, each additional vessel will also be treated in the same session. This can help alleviate symptoms and prevent serious complications.

22 services19 patients

Review by radiologist of 1 arm or leg vein of 1 arm or leg image 75820

This procedure involves a radiologist examining an image of a vein in either your arm or leg. The image helps to identify any abnormalities or issues with blood flow. It's a non-invasive and safe process that aids in accurate diagnosis and treatment planning.

21 services17 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

20 services14 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

16 services16 patients

Review by radiologist of arm or leg artery image 75710

This procedure involves a radiologist examining images of your arm or leg arteries. These images are obtained through a non-invasive method, like an ultrasound or CT scan. The radiologist reviews these images to identify any abnormalities, such as blockages or narrowing, which can affect blood flow.

15 services14 patients

Emergency department visit with low level of medical decision making 99283

An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.

15 services14 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Limestone Medical Center

Critical Access Hospitals · Groesbeck, TX

OwnershipGovernment - Hospital District or Authority

CMS Certification Number451303

Location701 Mcclintic DriveGroesbeck, TX 76642 · Limestone County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75093 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

$166.88 typical visit price

range $54.84 – $166.88

Typical copayment $41.72 (range $13.71 – $41.72)

Most-billed visit code 99205

Established Patient

$68.55 typical visit price

range $17.52 – $136.11

Typical copayment $17.13 (range $4.38 – $34.02)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Gregory Messner's NPI number?

The NPI number for Gregory Messner is 1376572867. It was assigned to this individual provider in the NPPES registry on June 30, 2006.

Where is Gregory Messner located?

Gregory Messner practices at 4708 Dexter Dr Ste 350, Plano, TX 75093. The listed phone number is (469) 750-8041.

What is Gregory Messner's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Gregory Messner enrolled in Medicare?

Yes. Gregory Messner is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Gregory Messner's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Messner reassigns Medicare benefits to 14 organizations: Doctor Greg Messner PLLC (Irving, TX), Nirp Dallas-Fort Worth PLLC (Dallas, TX), Southwest Medical Associates, Inc. (Electra, TX), Nirp Woodlands PLLC (Conroe, TX), Nirp Sugar Land PLLC (Sugar Land, TX) and 9 more organizations, listed in the Medicare section above. 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 Gregory Messner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Messner accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 9 other insurers list Gregory Messner 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 Gregory Messner affiliated with any hospitals?

According to CMS data, Gregory Messner is affiliated with Limestone Medical Center.

When was this NPI record last updated?

The NPPES record for Gregory Messner was last updated on December 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.