David Robert Buyer, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

036092425 Issued in IL

Practice address

850 S Wabash Ave Ste 210
Chicago, IL 60605-3642

Phone

(312) 598-3520

Fax

(312) 598-3525

NPI assigned

Feb 22, 2006

Last updated

Mar 18, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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.

Opted out of Medicare

Yes, effective May 23, 2024 through May 23, 2028

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Interoperability endpoints

• Direct secure messaging: davidbuyer@drbmdsc.allscriptsdirect.net

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.

• David R. Buyer, MD, SC

  dba Quintessential Care

  • Internal Medicine Physician
  • Chicago, IL
  • NPI 1962784124
  Authorized official Same address or phone
• West Loop University Medicine, LTD.

  • Internal Medicine Physician
  • Chicago, IL
  • NPI 1730154030
  NPD (past)

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

{
    "created_epoch": "1140566400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742256000000",
    "number": "1831164888",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "850 S WABASH AVE STE 210",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606053642",
            "telephone_number": "312-942-5100",
            "fax_number": "312-942-5109"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "850 S WABASH AVE STE 210",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606053642",
            "telephone_number": "312-598-3520",
            "fax_number": "312-598-3525"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BUYER",
        "first_name": "DAVID",
        "middle_name": "ROBERT",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-02-22",
        "last_updated": "2025-03-18",
        "certification_date": "2025-03-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036092425",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036092425",
            "state": "IL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "davidbuyer@drbmdsc.allscripts.net",
            "affiliation": "N",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCD",
            "address_1": "850 S Wabash Ave Ste 210",
            "city": "Chicago",
            "state": "IL",
            "country_code": "US",
            "postal_code": "606053642",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Sara A Buxton
• Shawn Buxton, DO
• Sue Buxton, APRN, CRNA
• Buy Contact Lenses LLC
• Bridget Ann Buyea, M.D.
• Masciel Sarela Buys
• Kathryn Buzenius
• Buzy As a Beaver Transportation, Inc
• Mary Buzzard, DPT
• Tessa Ellen Buzzetti, PA

• Internal Medicine Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Internal Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 18, 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; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.