Christopher El Mouhayyar

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

1.080789 Issued in CT

Practice address

20 York St
New Haven, CT 06510-3202

Phone

(203) 688-4242

NPI assigned

Jun 19, 2019

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 CT

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

NephrologyAlso: Internal Medicine

Education

Other, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Yale UniversityGroup PAC ID 9436061736, 2,632 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• DaVita Branford Dialysis Dialysis facility, Branford, CT, CCN 072517
• Yale-New Haven Hospital Hospital, New Haven, CT, CCN 070022
• Bridgeport Hospital Hospital, Bridgeport, CT, CCN 070010

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: celmouhayyar724086@direct.ynhh.org

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.

• Yale University

  • Anesthesiology Physician
  • New Haven, CT
  • NPI 1205822236

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Yale University

  • Durable Medical Equipment & Medical Supplies
  • Fairfield, CT
  • NPI 1548066962
  NPD

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

• Dva Renal Healthcare Inc

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • Branford, CT
  • NPI 1174598981

  Dialysis facility

  Care Compare affiliation Name & address match
• Bridgeport Hospital

  • General Acute Care Hospital
  • Bridgeport, CT
  • NPI 1649260845
  Care Compare affiliation
• Bridgeport Hospital

  • General Acute Care Hospital
  • Bridgeport, CT
  • NPI 1992910152
  Care Compare affiliation
• Yale New Haven Hospital

  • General Acute Care Hospital
  • New Haven, CT
  • NPI 1336139500
  Care Compare affiliation
• Yale New Haven Hospital

  • General Acute Care Hospital
  • New Haven, CT
  • NPI 1578778726
  Care Compare affiliation

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

{
    "created_epoch": "1560902400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753228800000",
    "number": "1003476227",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20 YORK ST",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103220"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20 YORK ST",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103202",
            "telephone_number": "203-688-4242"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "EL MOUHAYYAR",
        "first_name": "CHRISTOPHER",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2019-06-19",
        "last_updated": "2025-07-23",
        "certification_date": "2025-07-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "1.080789",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CONNECTICUT DEPARTMENT OF PUBLIC HEALTH",
            "identifier": "80789",
            "state": "CT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Udeme D Ekong, M.D.
• Mohammad Ali El Amine, MD
• Omar El Charif
• Roland El Ghazal, M.D.
• Roula El Masri, MD
• Lea G El-Achkar, PHARMD
• Paul Saad El-Fishawy, MD
• Joe Maroun El-Khoury, PHD
• Sadaf Elahy, DDS
• Mohamed Ahmed Elsayed Elkob Elashwal, M.D.

• Internal Medicine Physician in New Haven, CT
• Providers in New Haven, CT by specialty
• Internal Medicine Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 23, 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.