Jeffery Mack, M.D.
Internal Medicine Physician · Malvern, AR
Jeffery Mack, M.D. is an internal medicine physician with a practice address in Malvern, Arkansas, and NPI 1326571779, issued on Apr 4, 2017. Check the license (Arkansas E-13380, as entered in NPPES) on the Arkansas State Medical Board; the Medicare figures below come from public CMS files.
- Name
- Jeffery Mack
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- E-13380 AR
Self-reported in NPPES; status is on the state search - Practice location
- 1001 Schneider Dr, Malvern, AR 72104
- Phone
- (501) 851-7402
- Enumerated
- Apr 4, 2017
- Record last updated
- Oct 6, 2022
- Fax
- (501) 851-4753
- Medicare enrollment
- Enrolled (PECOS I20200804000384); accepts Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 768 in Arkansas → Look up another NPI →
Also registered at 1001 Schneider Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jeffery Mack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArkansas State Medical Board
Search for license E-13380Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
306 Medicare Part D claims for 164 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Cefdinir42 claims
- Prednisone28 claims
- Azithromycin21 claims
- Levofloxacin13 claims
- Clonidine Hcl11 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.
Bills Medicare through 2 group practices
- Arkansas Health GroupArkadelphia, AR
- Ess Hospitalist LLCCrossett, AR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffery Mack among 768 internal medicine physician records in Arkansas
Jeffery Mack, M.D. is one of 768 internal medicine physician records with a practice address in Arkansas. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 67% of them.
- NPI issued2017 · 67% of these records are older, 29% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2017 · median 2010 among the 519 with a school on file
- Record last updated2022 · 50% 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 Arkansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 internal medicine physician records list a practice address in Malvern
They are 5 of the 500 NPPES records with a practice address in Malvern, and 768 internal medicine physician records in Arkansas.
All 768 in Arkansas → Every provider in Malvern → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Altimus Bollen, M.D.Malvern, AR 721041720054125
- Bruce Burton, MDMalvern, AR 721041952497240
- Heath Mitchell, MDMalvern, AR 721041053872176
- Absalom Tilley, M.D.Malvern, AR 721041275558918
- Blair Greenwood, M.D.Mayflower, AR 721061932137148
- Noah Risner, D.O.Mc Crory, AR 721011689267742
- Jessie WamplerMc Crory, AR 721011568102069
- Robert Wilkerson, M.D.Morrilton, AR 721101245322387
Common questions
What is Jeffery Mack, M.D.'s NPI number?
Jeffery Mack, M.D.'s National Provider Identifier (NPI) is 1326571779, issued on Apr 4, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jeffery Mack, M.D. located?
The NPPES record lists a practice address at 1001 Schneider Dr, Malvern, AR, 72104. Phone: (501) 851-7402. Providers update this record themselves, so call before visiting.
How can I verify Jeffery Mack, M.D.'s license?
NPPES lists Arkansas license number E-13380, as entered by the provider. Search the Arkansas State Medical Board at https://armedicalboard.adh.arkansas.gov/public/verify/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jeffery Mack, M.D. prescribe under Medicare Part D?
In 2024, Jeffery Mack, M.D. had 306 Medicare Part D claims for 164 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.