Mark Douglas Porta
Internal Medicine Physician · Shreveport, LA
Mark Douglas Porta is an internal medicine physician with a practice address in Shreveport, Louisiana, and NPI 1275890436, issued on Apr 12, 2012. Check the license (Louisiana 206897, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark Douglas Porta
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 206897 LA
Self-reported in NPPES; status is on the state search - Practice location
- 1501 Kings Hwy, Shreveport, LA 71130
- Phone
- (318) 813-2502
- Enumerated
- Apr 12, 2012
- Record last updated
- Jul 30, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160428002154); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 2012
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,749 in Louisiana → Look up another NPI →
Also registered at 1501 Kings Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shabnum Chaudhery, M.D.Anatomic Pathology & Clinical Pathology Physician1790906923
- Lindsay Ferrington, PAMedical Physician Assistant1710065834
- Beatrice Launius, NPAcute Care Nurse Practitioner1972508372
- Rita Marascalco-King, ANPObstetrics & Gynecology Nurse Practitioner1033205695
- Matthew Morgan, SLPSpeech-Language Pathologist1912102641
- Alberto Simoncini, MDDiagnostic Radiology Physician1871689307
Verify Mark Douglas Porta in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 206897Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,300 Medicare Part D claims for 395 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Omeprazole317 claims
- Famotidine124 claims
- Pantoprazole Sodium98 claims
- Clenpiq53 claims
- Colestipol Hcl50 claims
- Dicyclomine Hcl45 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $938.95
61 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Lsuhn Billing LLCBaton Rouge, LA
- Texas Digestive Disease Consultants, PLLCThibodaux, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Douglas Porta among 1,749 internal medicine physician records in Louisiana
Mark Douglas Porta is one of 1,749 internal medicine physician records with a practice address in Louisiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 61% of them.
- NPI issued2012 · 61% of these records are older, 37% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2012 · median 2008 among the 1,216 with a school on file
- Record last updated2015 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
218 internal medicine physician records list a practice address in Shreveport
They are 218 of the 8,660 NPPES records with a practice address in Shreveport, and 1,749 internal medicine physician records in Louisiana.
All 1,749 in Louisiana → Every provider in Shreveport → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rami Al Khoury, MDShreveport, LA 711301487207585
- James McCarty, MDShreveport, LA 711301265052088
- Deanna Donley, MDShreveport, LA 711181114953858
- Jeffrey Foss, MDShreveport, LA 711181821027202
- Roopashree Muralidhar, M.D.Shreveport, LA 711181346487808
- Andrew O'Young, MDShreveport, LA 711181407884067
- Gary Williams, MDShreveport, LA 711181093747297
- Sreedevi Yerrapragada, MDShreveport, LA 711181629076120
Common questions
What is Mark Douglas Porta's NPI number?
Mark Douglas Porta's National Provider Identifier (NPI) is 1275890436, issued on Apr 12, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mark Douglas Porta located?
The NPPES record lists a practice address at 1501 Kings Hwy, Shreveport, LA, 71130. Phone: (318) 813-2502. Providers update this record themselves, so call before visiting.
How can I verify Mark Douglas Porta's license?
NPPES lists Louisiana license number 206897, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Douglas Porta prescribe under Medicare Part D?
In 2024, Mark Douglas Porta had 1,300 Medicare Part D claims for 395 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mark Douglas Porta's MIPS final score?
The 2023 MIPS final score is 79.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.