Mackenzie James Clarkson, MD
Internal Medicine Physician · Fairmont, WV
Mackenzie James Clarkson, MD is an internal medicine physician with a practice address in Fairmont, West Virginia, and NPI 1073908034, issued on Apr 6, 2015. Check the license (West Virginia 27820, as entered in NPPES) on the West Virginia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Mackenzie James Clarkson
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 27820 WV
Self-reported in NPPES; status is on the state search - Practice location
- 1377 Locust Ave, Fairmont, WV 26554
- Phone
- (304) 363-3500
- Enumerated
- Apr 6, 2015
- Record last updated
- May 12, 2025
- Fax
- (304) 366-4073
- Medicare enrollment
- Enrolled (PECOS I20190903001384); accepts Medicare assignment
- Medical or professional school
- West Virginia University School Of Medicine, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 754 in West Virginia → Look up another NPI →
Also registered at 1377 Locust Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bonnie Diep, MDInternal Medicine Physician1164806642
- Glenna GodfreyPhysician Assistant1720859424
- Sheldon Harris, MDFamily Medicine Physician1134783608
Verify Mackenzie James Clarkson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWest Virginia Board of Medicine
Search for license 27820Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,155 Medicare Part D claims for 131 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 51 claims were for opioids.
Most prescribed
- Atorvastatin Calcium125 claims
- Metoprolol Succinate119 claims
- Lisinopril91 claims
- Omeprazole86 claims
- Losartan Potassium67 claims
- Tamsulosin Hcl57 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): 94.1 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: $34.57
2 payments; by number, the most common kind was food and beverage; the largest payer was Exact Sciences Corporation. 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
- West Virginia University Medical CorporationReedsville, WV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mackenzie James Clarkson among 754 internal medicine physician records in West Virginia
Mackenzie James Clarkson, MD is one of 754 internal medicine physician records with a practice address in West Virginia. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 67% of them.
- NPI issued2015 · 67% of these records are older, 31% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2015 · median 2010 among the 487 with a school on file
- Record last updated2025 · 43% 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 West Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 internal medicine physician records list a practice address in Fairmont
They are 12 of the 1,582 NPPES records with a practice address in Fairmont, and 754 internal medicine physician records in West Virginia.
All 754 in West Virginia → Every provider in Fairmont → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Bonnie Diep, MDFairmont, WV 265541164806642
- Ryan Hall, M.D.Fairmont, WV 265541184944241
- Maliha Kamal, MDFairmont, WV 265541558309187
- Sudha Katragadda, MDFairmont, WV 265541295827855
- Eugenio Menez, MDFairmont, WV 265541104867811
- Thomas Miller, MDFairmont, WV 265541285732628
- Spencer OllayosFairmont, WV 265541184185084
- Cristina Pastuch, M.D.Fairmont, WV 265541871804591
Common questions
What is Mackenzie James Clarkson, MD's NPI number?
Mackenzie James Clarkson, MD's National Provider Identifier (NPI) is 1073908034, issued on Apr 6, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mackenzie James Clarkson, MD located?
The NPPES record lists a practice address at 1377 Locust Ave, Fairmont, WV, 26554. Phone: (304) 363-3500. Providers update this record themselves, so call before visiting.
How can I verify Mackenzie James Clarkson, MD's license?
NPPES lists West Virginia license number 27820, as entered by the provider. Search the West Virginia Board of Medicine at https://wvbom.wv.gov/public/search/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mackenzie James Clarkson, MD prescribe under Medicare Part D?
In 2024, Mackenzie James Clarkson, MD had 2,155 Medicare Part D claims for 131 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mackenzie James Clarkson, MD's MIPS final score?
The 2023 MIPS final score is 94.1 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.