Sarah Martin Mendenhall, M.D.

Primary specialty

Geriatric Medicine (Internal Medicine) PhysicianTaxonomy code 207RG0300X

Practice address

1229 N North Branch St
#210
Chicago, IL 60622-2473

Phone

(312) 939-5090

Fax

(312) 640-4496

NPI assigned

Jun 7, 2006

Sex

Female

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 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Focus Internal Medicine, SC

  • Internal Medicine Physician
  • South Elgin, IL
  • NPI 1467465492
  NPD (past)
• Lake Mi Mobile Doctors P.C.

  dba Mobile Doctors of Austin

  • Geriatric Medicine (Internal Medicine) Physician
  • Austin, TX
  • NPI 1982962924
  NPD (past)

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

{
    "created_epoch": "1149638400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1558301705",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1229 N NORTH BRANCH ST",
            "address_2": "#210",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606222473",
            "telephone_number": "312-939-5090",
            "fax_number": "312-640-4496"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1229 N NORTH BRANCH ST",
            "address_2": "#210",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606222473",
            "telephone_number": "312-939-5090",
            "fax_number": "312-640-4496"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MENDENHALL",
        "first_name": "SARAH",
        "middle_name": "MARTIN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-07",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Geriatric Medicine",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "36-100298",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Danielle Mendelson, LCSW
• Ellen Mendelson, MD
• Marla Mendelson, MD
• Marlee Jae Mendelson, LSW
• Scott Mendelson
• Kathryn Mendes
• Ezequiel Mendez-Huerta, MD
• Angie Mendez, M.ED
• Carmen Mendez, OTR/L
• Gabriela Mendez, MD

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.