Nicholas Callahan, MPH DMD MD

Primary specialty

Oral & Maxillofacial Surgery (D.M.D.)Taxonomy code 204E00000X

License

036147058 Issued in IL

Practice address

801 S Paulina St
Chicago, IL 60612

Phone

(312) 413-2379

Fax

(312) 996-5987

NPI assigned

Aug 25, 2010

Last updated

Aug 25, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 9

Addresses

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

Maxillofacial Surgery

Education

State University of New York Downstate Medical Center, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

The Board of Trustees of the University of IllinoisGroup PAC ID 3072422716, 1,134 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• University of Illinois Hospital and Clinics Hospital, Chicago, IL, CCN 140150

Merit-based Incentive Payment System (MIPS)

Final score

93.28 of 100Reported as group

Quality

73.53

Promoting interoperability

100

Improvement activities

40

Cost

70.73

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ncallahan276330@direct.myadvocateaurora.org

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.

• The Board of Trustees of the University of Illinois

  • Anatomic Pathology Physician
  • Chicago, IL
  • NPI 1386863819
  Medicare reassignment Care Compare group NPD
• Board of Trustees of the University of Illinois

  • Dentist
  • Chicago, IL
  • NPI 1992873921

  Oral and Maxillofacial Surgery

  NPD
• The Board of Trustees of the University of Illinois

  dba Occupational Health Service Institute (OHSI)

  • Occupational Medicine Physician
  • Chicago, IL
  • NPI 1043727571
  NPD
• The Board of Trustees of the University of Illinois

  dba UIC Physician Group

  • Internal Medicine Physician
  • Chicago, IL
  • NPI 1134118649
  NPD (past)
• The Board of Trustees of the University of Illinois

  dba University of Illinois Hospital and Clinics

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1861431751
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• The Board of Trustees of the University of Illinois

  dba University of Illinois Hospital and Clinics

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1861431751
  Care Compare affiliation

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

{
    "created_epoch": "1282694400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787616000000",
    "number": "1083920227",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "801 S PAULINA ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606127210",
            "telephone_number": "312-413-2379",
            "fax_number": "312-996-5987"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "801 S PAULINA ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "60612",
            "telephone_number": "312-413-2379",
            "fax_number": "312-996-5987"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "451 Clarkson Ave",
            "address_2": "Dental Clinic",
            "address_purpose": "LOCATION",
            "city": "Brooklyn",
            "state": "NY",
            "postal_code": "112032054",
            "country_code": "US",
            "telephone_number": "718-245-4914",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CALLAHAN",
        "first_name": "NICHOLAS",
        "name_prefix": "Dr.",
        "credential": "MPH DMD MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2010-08-25",
        "last_updated": "2026-08-25",
        "certification_date": "2026-08-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223S0112X",
            "taxonomy_group": "",
            "desc": "Dentist, Oral and Maxillofacial Surgery",
            "state": "IL",
            "license": "021102880",
            "primary": false
        },
        {
            "code": "1223S0112X",
            "taxonomy_group": "",
            "desc": "Dentist, Oral and Maxillofacial Surgery",
            "state": "IL",
            "license": "036147058",
            "primary": false
        },
        {
            "code": "1223S0112X",
            "taxonomy_group": "",
            "desc": "Dentist, Oral and Maxillofacial Surgery",
            "state": "IL",
            "license": "019031599",
            "primary": false
        },
        {
            "code": "1223X0400X",
            "taxonomy_group": "",
            "desc": "Dentist, Orthodontics and Dentofacial Orthopedics",
            "state": "IL",
            "license": "021002880",
            "primary": false
        },
        {
            "code": "1223X0400X",
            "taxonomy_group": "",
            "desc": "Dentist, Orthodontics and Dentofacial Orthopedics",
            "state": "IL",
            "license": "036147058",
            "primary": false
        },
        {
            "code": "1223X0400X",
            "taxonomy_group": "",
            "desc": "Dentist, Orthodontics and Dentofacial Orthopedics",
            "state": "IL",
            "license": "019031599",
            "primary": false
        },
        {
            "code": "204E00000X",
            "taxonomy_group": "",
            "desc": "Oral & Maxillofacial Surgery",
            "state": "IL",
            "license": "036147058",
            "primary": true
        },
        {
            "code": "204E00000X",
            "taxonomy_group": "",
            "desc": "Oral & Maxillofacial Surgery",
            "state": "IL",
            "license": "019031599",
            "primary": false
        },
        {
            "code": "204E00000X",
            "taxonomy_group": "",
            "desc": "Oral & Maxillofacial Surgery",
            "state": "IL",
            "license": "021002880",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Catherine Ann Coffey Callahan, M.S., CCC-SLP
• Connor Callahan
• Jay Callahan, PHD, LCSW
• Maria Callahan, OTR/L
• Miles Callahan
• Samantha M Callahan, DPT
• Emma Louise Callamaro
• Karen Callan, CPNP
• Ciara Francesca Callanan, MD
• Annie Lamorena Callangan, M.D.

• Oral & Maxillofacial Surgery (D.M.D.) in Chicago, IL
• Providers in Chicago, IL by specialty
• Oral & Maxillofacial Surgery (D.M.D.) in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 25, 2026; 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.