Mark Blackwelder, M.D.
Internal Medicine Physician · Ruston, LA
Mark Blackwelder, M.D. is an internal medicine physician with a practice address in Ruston, Louisiana, and NPI 1245200880, issued on Jan 25, 2006. Check the license (Louisiana 18456, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark Blackwelder
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 18456 LA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 S Farmerville St, Ruston, LA 71270
- Phone
- (318) 255-3690
- Enumerated
- Jan 25, 2006
- Record last updated
- Oct 15, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100303001150); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In Shreveport, 1985
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,749 in Louisiana → Look up another NPI →
Also registered at 1200 S Farmerville St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Blackwelder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 18456Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average internal medicine physician in 2024
8,078 Medicare Part D claims for 382 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 59 claims were for opioids.
Most prescribed
- Levothyroxine Sodium418 claims
- Pantoprazole Sodium354 claims
- Rosuvastatin Calcium336 claims
- Atorvastatin Calcium326 claims
- Farxiga319 claims
- Amlodipine Besylate296 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 MIPS final score for 2023 (Medicare payment program): 78.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $417.99
23 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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 one group practice
- Green Clinic LLCRuston, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Blackwelder among 1,749 internal medicine physician records in Louisiana
Mark Blackwelder, M.D. 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 58% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1985 · median 2008 among the 1,216 with a school on file
- Record last updated2009 · 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).
8 internal medicine physician records list a practice address in Ruston
They are 8 of the 752 NPPES records with a practice address in Ruston, and 1,749 internal medicine physician records in Louisiana.
All 1,749 in Louisiana → Every provider in Ruston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Allan Hild, M.D.Ruston, LA 712701467422345
- James Jones, M.D.Ruston, LA 712701467422824
- Holly Kidd, D.O.Ruston, LA 712701376513788
- Thomas Morris, M.D.Ruston, LA 712701972573665
- Martina Tamakloe, MDRuston, LA 712701396770566
- Sedo Tamakloe, MDRuston, LA 712701386652006
- Elvin Tubre, M.D.Ruston, LA 712701336108877
- Kyle Bruyninckx, MDRayville, LA 712691972770378
Common questions
What is Mark Blackwelder, M.D.'s NPI number?
Mark Blackwelder, M.D.'s National Provider Identifier (NPI) is 1245200880, issued on Jan 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Blackwelder, M.D. located?
The NPPES record lists a practice address at 1200 S Farmerville St, Ruston, LA, 71270. Phone: (318) 255-3690. Providers update this record themselves, so call before visiting.
How can I verify Mark Blackwelder, M.D.'s license?
NPPES lists Louisiana license number 18456, 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 Blackwelder, M.D. prescribe under Medicare Part D?
In 2024, Mark Blackwelder, M.D. had 8,078 Medicare Part D claims for 382 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mark Blackwelder, M.D.'s MIPS final score?
The 2023 MIPS final score is 78.3 of 100. 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.