Stephen Shepherd Johnston, MD

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

R73777 Issued in AZ

Practice address

2492 E River Rd
Tucson, AZ 85718-9552

Phone

(520) 722-8994

NPI assigned

May 15, 2013

Last updated

Feb 6, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in AZ, VA, LA, TX, KY, OH, TN, NM, AL, FL, ND11 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 11

Specialty

Diagnostic Radiology

Education

University of Arizona College of Medicine, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Unc Physicians Network LLCGroup PAC ID 5496940546, 985 clinicians

Allen Parish Hospital District No 3Group PAC ID 3274431341, 47 clinicians

Wetumpka Urgent Care LLCGroup PAC ID 6800053133, 50 clinicians

Radiology Associates LLCGroup PAC ID 8628041464, 83 clinicians

Allegiance Hospital of Many, LLCGroup PAC ID 3274607551, 40 clinicians

CLHG-Oakdale LLCGroup PAC ID 1355623943, 37 clinicians

Desoto Hospital AssociationGroup PAC ID 2163321829, 35 clinicians

Franklin Parish Hospital Service Dist 1Group PAC ID 7810893302, 80 clinicians

Richland Parish Hospital Service District No 1-BGroup PAC ID 2163481599, 41 clinicians

CLHG-Acadian LLCGroup PAC ID 0840521209, 31 clinicians

Caldwell Memorial Hospital, Inc.Group PAC ID 9638063944, 26 clinicians

ER Physician Group at Jackson HospitalGroup PAC ID 8729059472, 153 clinicians

Hospital Service District No 1 Parish of Avoyelles State of laGroup PAC ID 3375440910, 27 clinicians

Concord Radiology PLLCGroup PAC ID 8628332061, 217 clinicians

Peterson Medical AssociatesGroup PAC ID 1355467887, 192 clinicians

Prime Healthcare Services-Gadsden Physician Management LLCGroup PAC ID 7113231945, 79 clinicians

Concordia Parish Hospital Service District Number OneGroup PAC ID 4587559935, shared by 5 NPIs, 28 clinicians

CLHG-Ville Platte LLCGroup PAC ID 4486903309, 41 clinicians

Savoy Medical Management Group, IncGroup PAC ID 1557403953, 37 clinicians

Ivy Creek of Elmore LLCGroup PAC ID 8426075508, 99 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Unc Health Nash Hospital, Rocky Mount, NC, CCN 340147
• Our Lady of the Lake Regional Medical Center Hospital, Baton Rouge, LA, CCN 190064
• Fmol Health St Francis Hospital, Monroe, LA, CCN 190125
• Richardson Medical Center Hospital, Rayville, LA, CCN 190151
• Ascension Saint Thomas Hospital Hospital, Nashville, TN, CCN 440082

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles (60 of 109)

Locations (25 of 95)

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/10998/brand/1/csg/1/fhir/r4
• FHIR API: https://fhir-myrecord.cerner.com/r4/21ed112e-ec5e-43b1-8ddc-cd3753841e6e/
• FHIR API: https://fhir-usa.unify.chbase.com/org/caldmem-57e7c173

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Allegiance Hospital of Many, LLC

  dba Sabine Medical Center

  • General Acute Care Hospital
  • Many, LA
  • NPI 1568626273
  Medicare reassignment Care Compare group NPD
• Allen Parish Hospital District No 3

  dba Allen Parish Hospital

  • Psychiatric Hospital Unit
  • Kinder, LA
  • NPI 1982601944
  Medicare reassignment Care Compare group NPD
• Caldwell Memorial Hospital, Inc.

  • Emergency Medicine Physician
  • Columbia, LA
  • NPI 1023283793
  Medicare reassignment Care Compare group NPD
• CLHG-Acadian LLC

  dba Acadian Medical Center

  • Family Medicine Physician
  • Eunice, LA
  • NPI 1942977657

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• CLHG-Oakdale LLC

  dba Oberlin Express Care

  • Rural Health Clinic/Center
  • Oberlin, LA
  • NPI 1063111920
  Medicare reassignment Care Compare group NPD
• CLHG-Ville Platte LLC

  dba Mercy Regional Medical Center

  • Anesthesiology Physician
  • Ville Platte, LA
  • NPI 1285811927

  Diagnostic Radiology

  Medicare reassignment Care Compare group NPD
• Concord Radiology PLLC

  • Diagnostic Radiology Physician
  • Lubbock, TX
  • NPI 1598260515

  AZ

  Medicare reassignment Care Compare group NPD
• Desoto Hospital Association

  • General Acute Care Hospital
  • Mansfield, LA
  • NPI 1467455154
  Medicare reassignment Care Compare group NPD
• ER Physician Group at Jackson Hospital

  • General Practice Physician
  • Marianna, FL
  • NPI 1407801194
  Medicare reassignment Care Compare group NPD
• Franklin Parish Hospital Service Dist 1

  dba Franklin Medical Center

  • Rural Acute Care Hospital
  • Winnsboro, LA
  • NPI 1619143120
  Medicare reassignment Care Compare group NPD
• Hospital Service District No 1 Parish of Avoyelles State of Louisiana

  • Critical Access Hospital
  • Bunkie, LA
  • NPI 1316157845
  Medicare reassignment Care Compare group NPD
• Peterson Medical Associates

  • Obstetrics & Gynecology Physician
  • Kerrville, TX
  • NPI 1770800575

  Internal Medicine

  Medicare reassignment Care Compare group NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Nash Hospitals Inc

  dba Nash General Hospital

  • General Acute Care Hospital
  • Rocky Mount, NC
  • NPI 1619969219
  Care Compare affiliation
• Our Lady of the Lake Hospital Inc.

  dba Our Lady of the Lake Regional Medical Center

  • General Acute Care Hospital
  • Baton Rouge, LA
  • NPI 1366436123
  Care Compare affiliation
• Richland Parish Hospital Service District No 1-B

  dba Richardson Medical Center

  • General Acute Care Hospital
  • Rayville, LA
  • NPI 1255370144
  Care Compare affiliation
• Saint Thomas West Hospital

  dba Ascension Saint Thomas Hospital

  • General Acute Care Hospital
  • Nashville, TN
  • NPI 1629025648
  Care Compare affiliation
• St Francis Medical Center, Inc

  • General Acute Care Hospital
  • Monroe, LA
  • NPI 1295723229
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1368576000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770336000000",
    "number": "1730525841",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2492 E RIVER RD",
            "city": "TUCSON",
            "state": "AZ",
            "postal_code": "857189552",
            "telephone_number": "520-722-8994"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2492 E RIVER RD",
            "city": "TUCSON",
            "state": "AZ",
            "postal_code": "857189552",
            "telephone_number": "520-722-8994"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4250 Hospital Dr",
            "address_purpose": "LOCATION",
            "city": "Marianna",
            "state": "FL",
            "postal_code": "324461917",
            "country_code": "US",
            "telephone_number": "850-526-2200",
            "fax_number": "850-718-2844",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "JOHNSTON",
        "first_name": "STEPHEN",
        "middle_name": "SHEPHERD",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2013-05-15",
        "last_updated": "2026-02-06",
        "certification_date": "2026-02-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "LA",
            "license": "330999",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "FL",
            "license": "ME170763",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "AZ",
            "license": "R73777",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lindsey Johnston, PT, DPT
• Lucas A Johnston, DPT, PT
• Maria E Johnston, FNP
• Olivia M Johnston, ED.S.
• Robert Stephen Johnston, RN, FNP
• Steven Johnstun, RRT
• George F Johny
• Keith Joiner, MD
• Harry Joiser, LPC 21977
• Maj-Brith Jolivet

• Diagnostic Radiology Physician in Tucson, AZ
• Providers in Tucson, AZ by specialty
• Diagnostic Radiology Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 6, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.