Nathalie Callahan Egan, P.A.

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

PA16315 Issued in CA

Practice address

4077 Fifth Ave
San Diego, CA 92103-2105

Phone

(616) 686-3800

NPI assigned

Jul 26, 2005

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 names 1

• Nathalie K. Callahan Former name

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Merit-based Incentive Payment System (MIPS)

Final score

93.4 of 100Reported as group

Quality

82.48

Improvement activities

40

Cost

76.78

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: nathalie.callahan.1@29063.direct.athenahealth.com
• Direct secure messaging: ncallahan29745@scrippshlth.medalliesdirect.net

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.

• Emergency Medicine Group of Encinitas, Inc

  • Emergency Medicine Physician
  • Encinitas, CA
  • NPI 1902805179
  Medicare reassignment
• Pacific Emergency Providers, a Prof. Corp.

  • Emergency Medicine Physician
  • San Diego, CA
  • NPI 1497790539
  Medicare reassignment
• Scripps Health

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1487928891
  NPD
• Jabari Reeves MD Medical Corporation

  • Emergency Medicine Physician
  • San Francisco, CA
  • NPI 1942893425
  NPD (past)

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

{
    "created_epoch": "1122336000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768867200000",
    "number": "1770583262",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 EMBARCADERO CTR STE 1900",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941113723"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4077 FIFTH AVE",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921032105",
            "telephone_number": "616-686-3800"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2 Embarcadero Ctr",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941113823",
            "country_code": "US",
            "telephone_number": "888-663-6331",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "EGAN",
        "first_name": "NATHALIE",
        "middle_name": "CALLAHAN",
        "credential": "P.A.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-07-26",
        "last_updated": "2026-01-20",
        "certification_date": "2026-01-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "PA16315",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "NATHALIE",
            "last_name": "CALLAHAN",
            "middle_name": "K.",
            "credential": "P.A.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Calah Egan
• Coleen Egan
• Erin Daneel Egan, RN
• Jessica Egan, LCSW
• Kaitlyn Nicole Egan, PSYD
• Nicole Egan, LMFT
• Sarah Eileen Egan
• Laray Marie Egea-Saez
• David Egea
• Laura Eger

• Physician Assistant in San Diego, CA
• Providers in San Diego, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 20, 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.