Gary Maassen, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

R7H60 Issued in MO

Practice address

5034 Griffin Rd
Saint Louis, MO 63128-3418

Phone

(314) 843-7333

Fax

(314) 843-9946

NPI assigned

Nov 7, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 9

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Interoperability endpoints

• Direct secure messaging: gary.maassen.p1@direct.essehealth.nextgenshare.com

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

{
    "created_epoch": "1131321600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1348444800000",
    "number": "1831170968",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 23340",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631563340",
            "telephone_number": "314-843-7333",
            "fax_number": "314-843-9946"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5034 GRIFFIN RD",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631283418",
            "telephone_number": "314-843-7333",
            "fax_number": "314-843-9946"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAASSEN",
        "first_name": "GARY",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-07",
        "last_updated": "2012-09-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MO",
            "license": "R7H60",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "GHP",
            "identifier": "127466",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "26093",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HEALTHLINK",
            "identifier": "260293",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "UHC",
            "identifier": "0400519",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA",
            "identifier": "4540903",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ESSENCE",
            "identifier": "000000010024",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "GHP",
            "identifier": "127490",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MERCY",
            "identifier": "F92833",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "25688",
            "state": "MO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sherry X Ma, MD, PHD
• Abdallah A Al-Husseiney Maach, MD
• Hilde Anne Maagad
• Robi Nicolas Maamari, MD
• Jamal Maarouf, M.D.
• Sydnee Ann Marie Maberry, LMSW
• Kirstie Marie Mayol Mabitad, DO
• Roukaya Fatma Mabizari, CAA
• Scott Ervin Mabry, MD
• Mac Consulting, Inc

• Internal Medicine Physician in Saint Louis, MO
• Providers in Saint Louis, MO by specialty
• Internal Medicine Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 24, 2012; 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.