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GREGORY LOUIS GROGLIO M.D.
NPI 1699791772
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Slidell, LA

Active since July 14, 2006PECOS EnrolledAccepts Medicare Assignment
89.76/100
CMS Quality Rating
1051 GAUSE BLVD, SUITE 370, SLIDELL, LA 70458(985) 726-0026(985) 726-0024 Get Directions Write a Review

NPPES record last updated: March 1, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gregory Louis Groglio M.d. NPPES

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

GREGORY LOUIS GROGLIO M.D. (NPI 1699791772) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Slidell, Louisiana, licensed in Louisiana (08643R) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Merit Health Wesley, and maintains a secondary practice location in Hattiesburg.

NPPES Registry Identity

NPI1699791772
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameGREGORY LOUIS GROGLIOCredential: M.D.
Location Address1051 GAUSE BLVD, SUITE 370Slidell, LA 70458-2951
Mailing Address857 Brownswitch Rd, Suite 313Slidell, LA 70458-5335 · (985) 726-0026 · Fax (985) 726-0024
Phone(985) 726-0026
Fax(985) 726-0024
Sole ProprietorNo
Medical School CMSOtherGraduated 1985
Enumeration DateJuly 14, 2006
Last NPPES UpdateMarch 1, 2021
NPPES CertifiedFebruary 10, 2021
✔ NPI 1699791772 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians
Taxonomy Code208G00000X
Licenses✔ Licensed in LA · 08643R✔ Licensed in MS · 17361
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.
1051 GAUSE BLVD, Slidell, LA 70458
Open in Google Maps ↗

Secondary Practice Location 1

Location 1Merit Health Medical Group-Cardiology, 5003 Hardy Street, Suite 200Hattiesburg, MS 39402-1331 · Phone (601) 261-5700 · Fax (601) 268-8502

Other Identifiers 2

Medicaid1972614LA
Other17361MS · Medical License

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter Health 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 Louis Groglio M.d. 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 ID3375549397
PECOS Enrollment IDI20210226001940
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 Reassignment

Medicare enrollment records show Gregory Groglio reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Wesley Physician Services LLC
76 mi
Family Medicine
5003 HARDY ST STE 200
Hattiesburg, MS 39402
  • Reassigned Medicare billing, Mississippi enrollment
  • 86 clinicians in this Medicare group
NPI 1538200209 (601) 261-5700

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 5

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.

Coronary artery bypass using artery graft, 1 graft 33533
A coronary artery bypass with one artery graft is a surgical procedure to improve blood flow to your heart. An artery from another part of your body is used to bypass a blocked or narrowed coronary artery. This can help reduce chest pain and risk of heart attack.
18 services18 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.
17 services16 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
17 services17 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
16 services16 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
13 services12 patients

Hospital Affiliations CMS Care Compare

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

Merit Health Wesley

Acute Care Hospitals · Hattiesburg, MS
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number250094
Location5001 W Hardy StHattiesburg, MS 39402 · Lamar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 70458 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
$164.73 typical visit price
range $53.43 – $164.73
Typical copayment $41.18 (range $13.35 – $41.18)
Most-billed visit code 99205
Established Patient
$67.06 typical visit price
range $16.64 – $133.62
Typical copayment $16.76 (range $4.16 – $33.40)
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.

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.

89.76/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality75.59
Promoting Interoperability100
Improvement Activities40

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.

MR. STEPHEN W BAKER MD
Internal Medicine
1051 GAUSE BLVD, SUITE 230
SLIDEL, LA 70458
St. Tammany Parish (985) 641-7577
ADESH K JAIN MD
Internal Medicine
1051 GAUSE BLVD, SUITE 330
SLIDELL, LA 70458
St. Tammany Parish (985) 847-1090
DR. WILLIAM JEFFREY LONG MD
Internal Medicine (Cardiovascular Disease)
1051 GAUSE BLVD, STE 320
SLIDELL, LA 70458
St. Tammany Parish (985) 726-2655
DR. JOSEPH A PEDONE MD
Internal Medicine (Cardiovascular Disease)
1051 GAUSE BLVD
SLIDELL, LA 70458
St. Tammany Parish (985) 641-7577
ROBERT V SHAFOR, MD
Surgery
1051 GAUSE BLVD, SUITE 260
SLIDELL, LA 70458
St. Tammany Parish (985) 781-9004
GREGORY L GROGLIO MD A PROFESSIONAL MEDICAL CORPORATION
Thoracic Surgery (Cardiothoracic Vascular Surgery)
1051 GAUSE BLVD, SUITE 290
SLIDELL, LA 70458
St. Tammany Parish (985) 726-0026
ASHTON TAYLOR HILTON M.D.
Dermatology (Clinical & Laboratory Dermatological Immunology)
1051 GAUSE BLVD, SUITE 460
SLIDELL, LA 70458
St. Tammany Parish (985) 649-5880
CLINTON H. SHARP, III, M.D
Family Medicine
1051 GAUSE BLVD, SUITE 380
SLIDELL, LA 70458
St. Tammany Parish (985) 641-8191

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 Groglio's NPI number?

The NPI number for Gregory Groglio is 1699791772. It was assigned to this individual provider in the NPPES registry on July 14, 2006.

Where is Gregory Groglio located?

Gregory Groglio practices at 1051 Gause Blvd Suite 370, Slidell, LA 70458. The listed phone number is (985) 726-0026.

What is Gregory Groglio's specialty?

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

Is Gregory Groglio enrolled in Medicare?

Yes. Gregory Groglio 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 organization bills Medicare for Gregory Groglio's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Groglio reassigns Medicare benefits to Wesley Physician Services LLC (Hattiesburg, MS). The 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 Groglio's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Groglio accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 3 other insurers list Gregory Groglio 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 Groglio affiliated with any hospitals?

According to CMS data, Gregory Groglio is affiliated with Merit Health Wesley.

When was this NPI record last updated?

The NPPES record for Gregory Groglio was last updated on March 1, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.