Lakeside Pulmonary Medicine PLLC

Primary specialty

Pulmonary Disease PhysicianTaxonomy code 207RP1001X

Legal business name

LAKESIDE PULMONARY MEDICINE PLLC

Practice address

435 Upton Dr
Saint Joseph, MI 49085-1058

Phone

(269) 588-1994

NPI assigned

Apr 6, 2026

Organization subpart

No

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

Authorized official

Name

Dr. Cory M O'Brien, DO

Title

Owner

Phone

(517) 290-5639

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MI

Enrollment records 1

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Corey Michael O'Brien, D.O.

  • Pulmonary Disease Physician
  • Lansing, MI
  • NPI 1437321213
  Medicare reassignment NPD

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

{
    "created_epoch": "1775433600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1775433600000",
    "number": "1508707100",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "435 UPTON DR",
            "city": "SAINT JOSEPH",
            "state": "MI",
            "postal_code": "490851058"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "435 UPTON DR",
            "city": "SAINT JOSEPH",
            "state": "MI",
            "postal_code": "490851058",
            "telephone_number": "269-588-1994"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "LAKESIDE PULMONARY MEDICINE PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-04-06",
        "last_updated": "2026-04-06",
        "certification_date": "2026-04-06",
        "status": "A",
        "authorized_official_last_name": "O'BRIEN",
        "authorized_official_first_name": "CORY",
        "authorized_official_middle_name": "M",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "517-290-5639",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DO"
    },
    "taxonomies": [
        {
            "code": "207RP1001X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lakeshore Acupuncture, LLC
• Lakeshore Anesthesia Staffing LLC
• Lakeside Cancer Specialists, PLLC
• Lakeside Diabetes & Endocrine Center PLLC
• Lakeside Healthcare Specialists PLLC
• Lakeside Urology PC
• Kara Lampinen, CCC-SLP
• William Lon Peterson Lancaster, PA-C
• Isabella Assunta Lane, DO
• Paige Elizabeth Lanham, LLMSW

• Pulmonary Disease Physician in Saint Joseph, MI
• Providers in Saint Joseph, MI by specialty
• Pulmonary Disease Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.