Merrill Zahtz, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

036-056-363 Issued in IL

Practice address

6374 N Lincoln Ave
Chicago, IL 60659-1275

Phone

(872) 270-5999

NPI assigned

Mar 21, 2006

Last updated

Aug 5, 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

Medicare fee-for-service enrollment

Enrolled in IL

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.

Enrollment records 1

Specialty

Internal Medicine

Education

Other, 1975

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Midwest Refuah Health CenterGroup PAC ID 5193103653, 12 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/JCEHCD

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.

• Midwest Refuah Health Center

  • Clinic/Center
  • Chicago, IL
  • NPI 1518601004
  Medicare reassignment Care Compare group NPD
• Merrill J Zahtz MD SC

  • Specialist
  • Skokie, IL
  • NPI 1104076405
  NPD (past) Authorized official
• Midwest Refuah Health Center

  • Radiology Clinic/Center
  • Chicago, IL
  • NPI 1962219691
  NPD
• PMR Illinois Holding, LLC

  • Specialist
  • Miami Gardens, FL
  • NPI 1770038671
  NPD
• Lakeshorehealthcare

  • Group Psychotherapy Psychologist
  • Chicago, IL
  • NPI 1881643906
  NPD (past)
• Midwest Refuah Health Center

  • Federally Qualified Health Center (FQHC)
  • Chicago, IL
  • NPI 1003622101

  Internal Medicine

  NPD (past)
• Midwest Refuah Health Center

  • Multi-Specialty Clinic/Center
  • Chicago, IL
  • NPI 1982301370
  NPD (past)

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

{
    "created_epoch": "1142899200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754352000000",
    "number": "1225097819",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3525 W GRANVILLE AVE",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606592221"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6374 N LINCOLN AVE",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606591275",
            "telephone_number": "872-270-5999"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZAHTZ",
        "first_name": "MERRILL",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-03-21",
        "last_updated": "2025-08-05",
        "certification_date": "2025-08-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036-056-363",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0360563631",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sarah L Zahnd
• John Michael Zahour, MD
• Erin Zahradnik
• Naser A Zahran, M.D.
• Marilyn Zahrt
• Yael Zahtz, PSYD
• Zaid Dental LLC
• Zaid Dentistry Inc.
• Carly Zaid, OTR/L
• Jordan M Zaid, MD

• 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 Aug 5, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.