John Leander PO, MD, PHD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

37948 Issued in AZ

Practice address

3902 E Grant Rd
Tucson, AZ 85712-2558

Phone

(520) 468-4801

NPI assigned

Sep 20, 2007

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

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 1

Specialty

Internal MedicineAlso: Infectious Disease

Education

Other, 2003

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Oak Street Health Physicians Group of Arizona PLLCGroup PAC ID 3274939988, 76 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Tucson Medical Center Hospital, Tucson, AZ, CCN 030006

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

Practice roles

Locations

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

• Oak Street Health Physicians Group of Arizona PLLC

  • Primary Care Clinic/Center
  • Apache Junction, AZ
  • NPI 1063083590

  Family Medicine

  Medicare reassignment Care Compare group NPD
• Iora Senior Health, LLC

  • Internal Medicine Physician
  • Phoenix, AZ
  • NPI 1619376456
  Medicare reassignment NPD
• Iora Senior Health, LLC

  • Internal Medicine Physician
  • Tucson, AZ
  • NPI 1003292244
  NPD
• Iora Senior Health, LLC

  • Internal Medicine Physician
  • Arvada, CO
  • NPI 1760867428
  NPD
• Arizona Specialty Physicians

  • Multi-Specialty Clinic/Center
  • Gilbert, AZ
  • NPI 1922049634
  NPD (past)
• Sunset Community Health Center Inc

  • Federally Qualified Health Center (FQHC)
  • Yuma, AZ
  • NPI 1063433720
  NPD (past)
• Iora Health Massachusetts, P.C.

  • Internal Medicine Physician
  • Hyannis, MA
  • NPI 1851858666
  NPD (past)
• Iora Health, LLC

  • Internal Medicine Physician
  • Hanover, NH
  • NPI 1700285616
  NPD (past)

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

• Tucson Medical Center

  • General Acute Care Hospital
  • Tucson, AZ
  • NPI 1174512792
  Care Compare affiliation

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

{
    "created_epoch": "1190246400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749686400000",
    "number": "1366638561",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 245039",
            "city": "TUCSON",
            "state": "AZ",
            "postal_code": "857245039",
            "telephone_number": "520-626-6887",
            "fax_number": "520-626-5183"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3902 E GRANT RD",
            "city": "TUCSON",
            "state": "AZ",
            "postal_code": "857122558",
            "telephone_number": "520-468-4801"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "7040 E Golf Links Rd",
            "address_purpose": "LOCATION",
            "city": "Tucson",
            "state": "AZ",
            "postal_code": "857301000",
            "country_code": "US",
            "telephone_number": "520-200-6709",
            "fax_number": "520-532-1602",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PO",
        "first_name": "JOHN LEANDER",
        "name_prefix": "Dr.",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-09-20",
        "last_updated": "2025-06-12",
        "certification_date": "2025-06-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "MA",
            "license": "218627",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "AZ",
            "license": "37948",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "AZ",
            "license": "37948",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Anna Plotkin
• David I Plumb, M.D.
• Sarah E Plummer, RNFA, FNP-C
• Robert R Plymyer, M.S., L.P.C.
• Pneuma House
• Megan Renee Pocock, M.S., CCC-SLP
• Dorothy Poczulp
• Gary A Podolny, MD
• Daniel Podsiadlo
• Chenin Poels

• Internal Medicine Physician in Tucson, AZ
• Providers in Tucson, AZ by specialty
• Internal Medicine Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 12, 2025; 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.