MARK DOUGLAS PORTA JR.
NPI 1275890436
Internal Medicine in Shreveport, LA

Q: What is Mark Porta's NPI number?

The NPI number for Mark Porta is 1275890436. It was assigned to this individual provider in the NPPES registry on April 12, 2012.

Q: What is Mark Porta's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Porta was last updated on July 30, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since April 12, 2012PECOS EnrolledAccepts Medicare Assignment

87.37/100

CMS Quality Rating

1501 KINGS HWY, LSUHSC DEPT. OF GASTROENTEROLOGY, SHREVEPORT, LA 71130(318) 813-2502 Get Directions Write a Review

NPPES record last updated: July 30, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Mark Douglas Porta Jr. NPPES

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

MARK DOUGLAS PORTA JR. (NPI 1275890436) is an individual internal medicine provider in Shreveport, Louisiana, licensed in Louisiana (206897) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS, is affiliated with Our Lady Of The Lake Regional Medical Center, and is a graduate of Louisiana State University School Of Medicine In New Orleans (2012).

NPPES Registry Identity

NPI1275890436

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameMARK DOUGLAS PORTA JR.

Location Address1501 KINGS HWY, LSUHSC DEPT. OF GASTROENTEROLOGYShreveport, LA 71130

Mailing Address1501 Kings Hwy, Lsuhsc Dept. Of GastroenterologyShreveport, LA 71130 · (318) 813-2502

Phone(318) 813-2502

Sole ProprietorNo

Medical School CMSLouisiana State University School Of Medicine In New OrleansGraduated 2012

Enumeration DateApril 12, 2012

Last NPPES UpdateJuly 30, 2015

✔ NPI 1275890436 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in LA · 206897

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1501 KINGS HWY, Shreveport, LA 71130

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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

Mark Douglas Porta Jr. 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 ID2860795572

PECOS Enrollment IDI20160428002154

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 Mark Porta reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rapides Healthcare System, LLC

108 mi

Urgent Care

105 N 3RD ST
Alexandria, LA 71301

Reassigned Medicare billing, Louisiana enrollment
45 clinicians in this Medicare group

NPI 1477970168 (318) 769-8160

Lsuhn Billing LLC

184 mi

Multi-Specialty

2390 W CONGRESS ST
Lafayette, LA 70506

Reassigned Medicare billing, Louisiana enrollment
548 clinicians in this Medicare group

NPI 1992975775 (877) 988-1890

Main Street Physician Services LLC

205 mi

Hospitalist

2315 E MAIN ST
New Iberia, LA 70560

Reassigned Medicare billing, Louisiana enrollment
93 clinicians in this Medicare group

NPI 1396150785 (800) 893-9698

Texas Digestive Disease Consultants PLLC

253 mi

Gastroenterology

131 CHEROKEE ROSE LN
Covington, LA 70433

Reassigned Medicare billing, Louisiana enrollment
92 clinicians in this Medicare group

NPI 1295428415 (214) 424-2200

Concord Medical Group PLLC

479 mi

Emergency Medicine

1602 AVENUE Q
Lubbock, TX 79401

Reassigned Medicare billing, Louisiana enrollment
214 clinicians in this Medicare group

NPI 1083630610 (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 13

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.

Injection, vedolizumab, intravenous, 1 mg J3380

Vedolizumab is a medication given via injection. It's used to treat certain bowel conditions (such as Crohn's disease, ulcerative colitis) by reducing inflammation. It works by blocking a certain protein that causes this inflammation.

3,600 services12 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.

126 services74 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.

40 services40 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

33 services33 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.

28 services27 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

25 services20 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

24 services23 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

16 services16 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

14 services14 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

12 services12 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

12 services12 patients

Insertion of guide wire with dilation of esophagus using a flexible endoscope 43248

This is a procedure where a thin tube, called an endoscope, is gently passed through your mouth into your esophagus. A guide wire is then inserted to help widen any narrow areas. This helps improve swallowing and reduce discomfort.

11 services11 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Our Lady Of The Lake Regional Medical Center

Acute Care Hospitals · Baton Rouge, LA

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number190064

Location5000 Hennessy BlvdBaton Rouge, LA 70808 · E. Baton Rouge County

Emergency services

Baton Rouge General Medical Center

Acute Care Hospitals · Baton Rouge, LA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number190065

Location8585 Picardy AveBaton Rouge, LA 70809 · E. Baton Rouge County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 71130 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

$124.60 typical visit price

range $53.43 – $164.73

Typical copayment $31.15 (range $13.35 – $41.18)

Most-billed visit code 99204

Established Patient

$95.09 typical visit price

range $16.64 – $133.62

Typical copayment $23.77 (range $4.16 – $33.40)

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.

87.37/100

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

Scored as part of a group practice

Quality

69.52

Promoting Interoperability

100

Improvement Activities

Cost

55.04

Reported Quality Measures

Care Plan

Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…

100%22 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RITA M MARASCALCO-KING ANP

Nurse Practitioner (Obstetrics & Gynecology)

1501 KINGS HWY, PARTNERS IN WELLNESS
SHREVEPORT, LA 71130

Bossier Parish (318) 813-2225

VESELA T TZONEVA-KAMBEROVA MD

Psychiatry & Neurology (Psychiatry)

1501 KINGS HWY, DEPARTMENT OF PSYCHIATRY
SHREVEPORT, LA 71130

Bossier Parish (318) 813-2445

DR. RYAN M WOLFORT MD

Surgery

1501 KINGS HWY
SHREVEPORT, LA 71130

Bossier Parish (318) 675-6111

LINDSAY STAFFORD FERRINGTON PA

Physician Assistant (Medical)

1501 KINGS HWY, UROLOGY DEPARTMENT
SHREVEPORT, LA 71130

Bossier Parish (318) 813-2775

DR. SHABNUM ILYAS CHAUDHERY M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

1501 KINGS HWY
SHREVEPORT, LA 71130

Bossier Parish (318) 675-5860

ALBERTO A SIMONCINI MD

Radiology (Diagnostic Radiology)

1501 KINGS HWY, DEPARTMENT OF RADIOLOGY
SHREVEPORT, LA 71130

Bossier Parish (318) 675-5000

MR. MATTHEW C MORGAN SLP

Speech-Language Pathologist

1501 KINGS HWY
SHREVEPORT, LA 71130

Bossier Parish (318) 813-1328

MS. BEATRICE K. LAUNIUS NP

Nurse Practitioner (Acute Care)

1501 KINGS HWY
SHREVEPORT, LA 71130

Bossier Parish (318) 675-6919

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 Mark Porta's NPI number?

The NPI number for Mark Porta is 1275890436. It was assigned to this individual provider in the NPPES registry on April 12, 2012.

Where is Mark Porta located?

Mark Porta practices at 1501 Kings Hwy Lsuhsc Dept. Of Gastroenterology, Shreveport, LA 71130. The listed phone number is (318) 813-2502.

What is Mark Porta's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mark Porta enrolled in Medicare?

Yes. Mark Porta 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 Mark Porta's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Porta reassigns Medicare benefits to 5 organizations: Rapides Healthcare System, LLC (Alexandria, LA), Lsuhn Billing LLC (Lafayette, LA), Main Street Physician Services LLC (New Iberia, LA), Texas Digestive Disease Consultants PLLC (Covington, LA) and Concord Medical Group PLLC (Lubbock, TX). 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 Mark Porta's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Porta 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 and 3 other insurers list Mark Porta 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 Mark Porta affiliated with any hospitals?

According to CMS data, Mark Porta is affiliated with Our Lady Of The Lake Regional Medical Center and Baton Rouge General Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Porta was last updated on July 30, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.