Samuel Thomas Johnston, MD
Internal Medicine Physician · Birmingham, AL
Samuel Thomas Johnston, MD is an internal medicine physician with a practice address in Birmingham, Alabama, and NPI 1073193124, issued on Apr 13, 2021. Check the license (Alabama MD.44901, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Samuel Thomas Johnston
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD.44901 AL
Self-reported in NPPES; status is on the state search - Practice location
- 833 Princeton Avenue SW, Birmingham, AL 35211
- Phone
- (205) 971-5745
- Enumerated
- Apr 13, 2021
- Record last updated
- Jan 26, 2026
- Medicare enrollment
- Enrolled (PECOS I20240212003159); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,705 in Alabama → Look up another NPI →
Also registered at 833 Princeton Avenue SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Samuel Thomas Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license MD.44901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
149 Medicare Part D claims for 28 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium16 claims
- Amlodipine Besylate13 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.
Industry payments in 2024: $332.94
8 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals 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
- Oak Mountain Group Services, LLCBirmingham, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Samuel Thomas Johnston among 1,705 internal medicine physician records in Alabama
Samuel Thomas Johnston, MD is one of 1,705 internal medicine physician records with a practice address in Alabama. 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 2021, is newer than 88% of them.
- NPI issued2021 · 88% of these records are older, 8% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2020 · median 2003 among the 1,136 with a school on file
- Record last updated2026 · 55% 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 Alabama practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
487 internal medicine physician records list a practice address in Birmingham
They are 487 of the 15,795 NPPES records with a practice address in Birmingham, and 1,705 internal medicine physician records in Alabama.
All 1,705 in Alabama → Every provider in Birmingham → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Emily Baillio, M.D.Birmingham, AL 352111245207877
- Steve Boger, M.D.Birmingham, AL 352111740209048
- John Dumas, M.D.Birmingham, AL 352111932119419
- Osama Eisa, M.D.Birmingham, AL 352111457365785
- Timothy Eller, M.D.Birmingham, AL 352111700827433
- Sulaf Hage, M.D.Birmingham, AL 352111265478143
- William Hall, M.D.Birmingham, AL 352111316901150
- James Lindsey, M.D.Birmingham, AL 352111851337547
Common questions
What is Samuel Thomas Johnston, MD's NPI number?
Samuel Thomas Johnston, MD's National Provider Identifier (NPI) is 1073193124, issued on Apr 13, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Samuel Thomas Johnston, MD located?
The NPPES record lists a practice address at 833 Princeton Avenue SW, Birmingham, AL, 35211. Phone: (205) 971-5745. Providers update this record themselves, so call before visiting.
How can I verify Samuel Thomas Johnston, MD's license?
NPPES lists Alabama license number MD.44901, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Samuel Thomas Johnston, MD prescribe under Medicare Part D?
In 2024, Samuel Thomas Johnston, MD had 149 Medicare Part D claims for 28 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.