John Lawrence Schaller, M.D., M.P.H.

Primary specialty

Preventive Medicine/Occupational Environmental Medicine PhysicianTaxonomy code 2083P0500X

License

G66859 Issued in CA

Practice address

4645 E Cotton Center Blvd BLDG 1 # 200
Phoenix, AZ 85040-8874

Phone

(602) 659-1123

NPI assigned

Mar 19, 2007

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1174262400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1093830333",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4645 E COTTON CENTER BLVD BLDG 1 # 200",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850408874",
            "telephone_number": "602-659-1123"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4645 E COTTON CENTER BLVD BLDG 1 # 200",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850408874",
            "telephone_number": "602-659-1123"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SCHALLER",
        "first_name": "JOHN",
        "middle_name": "LAWRENCE",
        "name_prefix": "Dr.",
        "credential": "M.D., M.P.H.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-03-19",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "AZ",
            "license": "17949",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G66859",
            "primary": false
        },
        {
            "code": "2083P0500X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Preventive Medicine/Occupational Environmental Medicine",
            "state": "AZ",
            "license": "17949",
            "primary": false
        },
        {
            "code": "2083P0500X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Preventive Medicine/Occupational Environmental Medicine",
            "state": "CA",
            "license": "G66859",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jessica Schafman, NP
• Lara Schaheen, MD
• John Schaible, M.D.
• Julie Schaible, CRNA
• Geolene I Schaller, PA-C
• Amy Schallett, PT
• Andrew Dumas Schanen, LPC
• Erin Schankel, CRNA
• Alan A Schapker, M.D.
• Scott A Schapker, M.D.

• Preventive Medicine/Occupational Environmental Medicine Physician in Phoenix, AZ
• Providers in Phoenix, AZ by specialty
• Preventive Medicine/Occupational Environmental Medicine Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.