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SAMUEL THOMAS JOHNSTON MD
NPI 1073193124
Internal Medicine in Birmingham, AL

Active since April 13, 2021PECOS EnrolledAccepts Medicare Assignment
833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-E, BIRMINGHAM, AL 35211(205) 971-5745 Get Directions Write a Review

NPPES record last updated: January 26, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 26, 2026, Apr 13, 2021 (2 updates tracked since 2021).

About Samuel Thomas Johnston Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SAMUEL THOMAS JOHNSTON MD (NPI 1073193124) is an individual internal medicine provider in Birmingham, Alabama, licensed in Alabama (MD.44901) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, is affiliated with North Mississippi Medical Center, and is a graduate of University Of Alabama School Of Medicine (2020).

NPPES Registry Identity

NPI1073193124
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSAMUEL THOMAS JOHNSTONCredential: MD
Location Address833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-EBirmingham, AL 35211
Mailing Address540 56th St SBirmingham, AL 35212-3620 · (205) 747-9544
Phone(205) 971-5745
Sole ProprietorNo
Medical School CMSUniversity Of Alabama School Of MedicineGraduated 2020
Enumeration DateApril 13, 2021
Last NPPES UpdateJanuary 26, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 26, 2026
✔ NPI 1073193124 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in AL · MD.44901
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
833 PRINCETON AVENUE SW, Birmingham, AL 35211
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Alabama, Oscar Health Plan, Inc., UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Samuel Thomas Johnston Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2860835337
PECOS Enrollment IDI20240212003159
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Samuel Johnston reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Oak Mountain Group Services, LLC
8.0 mi
Physical Medicine & Rehabilitation
3070 HEALTHY WAY
Vestavia Hills, AL 35243
  • Reassigned Medicare billing, Alabama enrollment
  • 215 clinicians in this Medicare group
NPI 1609321165 (205) 977-7216
Nephrology & Hypertension Associates, Ltd.
119 mi
Nephrology
1542 MEDICAL PARK CIR
Tupelo, MS 38801
  • Reassigned Medicare billing, Mississippi enrollment
  • 23 clinicians in this Medicare group
NPI 1902975139 (662) 844-4711

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

North Mississippi Medical Center

Acute Care Hospitals · Tupelo, MS
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number250004
Location830 S Gloster StreetTupelo, MS 38801 · Lee County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 35211 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$122.31 typical visit price
range $52.65 – $161.63
Typical copayment $30.57 (range $13.16 – $40.40)
Most-billed visit code 99204
Established Patient
$93.72 typical visit price
range $16.56 – $131.65
Typical copayment $23.43 (range $4.14 – $32.91)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HAYA SALAHIA MD
Student in an Organized Health Care Education/Training Program
833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-E
BIRMINGHAM, AL 35211
Jefferson County (205) 783-7694
VICTOR MANUEL ORTIZ-SORIANO MD
Student in an Organized Health Care Education/Training Program
833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-E
BIRMINGHAM, AL 35211
Jefferson County (205) 783-7694
DAVID ANDREW BERRY DO
Student in an Organized Health Care Education/Training Program
833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-E
BIRMINGHAM, AL 35211
Jefferson County (205) 783-7694
JEFFREY YANG XU DO
Student in an Organized Health Care Education/Training Program
833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-E
BIRMINGHAM, AL 35211
Jefferson County (205) 783-3098
SYDNEY ALEXANDRA BLAND MD
Student in an Organized Health Care Education/Training Program
833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-E
BIRMINGHAM, AL 35211
Jefferson County (205) 783-3098
IAN COLWILL CUMMINS MD
Student in an Organized Health Care Education/Training Program
833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-E
BIRMINGHAM, AL 35211
Jefferson County (205) 783-7694
JOHN PAUL GRECO MD
Student in an Organized Health Care Education/Training Program
833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-E
BIRMINGHAM, AL 35211
Jefferson County (205) 783-7663
BLAKE AUSTIN CLEMENTS DO
Student in an Organized Health Care Education/Training Program
833 PRINCETON AVENUE SW, PROFESSIONAL OFFICE BUILDING 3, SUITE 200-E
BIRMINGHAM, AL 35211
Jefferson County (205) 783-3098

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Samuel Johnston's NPI number?

The NPI number for Samuel Johnston is 1073193124. It was assigned to this individual provider in the NPPES registry on April 13, 2021.

Where is Samuel Johnston located?

Samuel Johnston practices at 833 Princeton Avenue SW Professional Office Building 3, Suite 200-E, Birmingham, AL 35211. The listed phone number is (205) 971-5745.

What is Samuel Johnston's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Samuel Johnston enrolled in Medicare?

Yes. Samuel Johnston is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Samuel Johnston's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Samuel Johnston reassigns Medicare benefits to 2 organizations: Oak Mountain Group Services, LLC (Vestavia Hills, AL) and Nephrology & Hypertension Associates, Ltd. (Tupelo, MS). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Samuel Johnston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Samuel Johnston accept?

Health plans from Blue Cross and Blue Shield of Alabama, Oscar Health Plan, Inc. and UnitedHealthcare list Samuel Johnston as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Samuel Johnston affiliated with any hospitals?

According to CMS data, Samuel Johnston is affiliated with North Mississippi Medical Center.

When was this NPI record last updated?

The NPPES record for Samuel Johnston was last updated on January 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.