Mohamed Bassyounyaboueleinin Elnaggar, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

210209 Issued in CA

Practice address

200 W Arbor Dr
San Diego, CA 92103-9000

Phone

(800) 926-8273

Fax

(888) 539-8781

NPI assigned

Jun 29, 2017

Last updated

Jul 13, 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 4

Addresses

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

Internal Medicine

Education

Other, 2008

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Hartford Healthcare Medical Group Specialists PLLCGroup PAC ID 3173866241, 1,555 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Hartford Hospital Hospital, Hartford, CT, CCN 070025
• Middlesex Hospital Hospital, Middletown, CT, CCN 070020
• William W Backus Hospital Hospital, Norwich, CT, CCN 070024
• Manchester Memorial Hospital Hospital, Manchester, CT, CCN 070027
• Griffin Hospital Hospital, Derby, CT, CCN 070031

Merit-based Incentive Payment System (MIPS)

Final score

90.42 of 100Reported as group

Quality

83.36

Promoting interoperability

100

Improvement activities

40

Cost

75.9

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mohamed.elnaggar@xdr.hhchealthdirect.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.

• Hartford Healthcare Medical Group Specialists, PLLC

  • Surgery Physician
  • Hartford, CT
  • NPI 1023584216
  Medicare reassignment Care Compare group NPD
• Midstate Medical Center

  • General Acute Care Hospital
  • Meriden, CT
  • NPI 1154425288
  Medicare reassignment
• The Hospital of Central Connecticut at New Britain General and Bradley

  dba The Hospital of Central Connecticut

  • Hospitalist Physician
  • New Britain, CT
  • NPI 1063461481
  Medicare reassignment
• Hartford Healthcare Medical Group Specialists LLC

  • Customized Equipment (DME)
  • Groton, CT
  • NPI 1295367068
  NPD

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

• Hartford Hospital

  • General Acute Care Hospital
  • Hartford, CT
  • NPI 1770696643
  Care Compare affiliation
• Hartford Hospital

  • General Acute Care Hospital
  • Hartford, CT
  • NPI 1902834880
  Care Compare affiliation
• Manchester Memorial Hospital, Inc.

  • General Acute Care Hospital
  • Manchester, CT
  • NPI 1881564664
  Care Compare affiliation
• Middlesex Hospital

  • General Acute Care Hospital
  • Middletown, CT
  • NPI 1760454334
  Care Compare affiliation
• The Griffin Hospital

  • General Acute Care Hospital
  • Derby, CT
  • NPI 1184639973
  Care Compare affiliation
• The William W Backus Hospital

  • General Acute Care Hospital
  • Norwich, CT
  • NPI 1467517235
  Care Compare affiliation
• The William W Backus Hospital

  • General Acute Care Hospital
  • Norwich, CT
  • NPI 1639135718
  Care Compare affiliation
• William W Backus Hospital

  • Psychiatric Hospital Unit
  • Norwich, CT
  • NPI 1730243536
  Care Compare affiliation

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

{
    "created_epoch": "1498694400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1801317888",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "FILE 57326",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900747326",
            "telephone_number": "800-926-8273"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 W ARBOR DR",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921039000",
            "telephone_number": "800-926-8273",
            "fax_number": "888-539-8781"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "9300 Campus Point Dr",
            "address_purpose": "LOCATION",
            "city": "LA Jolla",
            "state": "CA",
            "postal_code": "920371300",
            "country_code": "US",
            "telephone_number": "800-926-8273",
            "fax_number": "888-539-8781",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6655 Alvarado Rd",
            "address_purpose": "LOCATION",
            "city": "San Diego",
            "state": "CA",
            "postal_code": "921205208",
            "country_code": "US",
            "telephone_number": "800-926-8273",
            "fax_number": "888-539-8781",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "9350 Campus Point Dr",
            "address_purpose": "LOCATION",
            "city": "LA Jolla",
            "state": "CA",
            "postal_code": "920371300",
            "country_code": "US",
            "telephone_number": "800-926-8273",
            "fax_number": "888-539-8781",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "80 Seymour Street",
            "address_purpose": "LOCATION",
            "city": "Hartford",
            "state": "CT",
            "postal_code": "061025037",
            "country_code": "US",
            "telephone_number": "860-972-0549",
            "fax_number": "860-545-5221",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1155 Mill St # W11",
            "address_purpose": "LOCATION",
            "city": "Reno",
            "state": "NV",
            "postal_code": "895021576",
            "country_code": "US",
            "telephone_number": "775-785-7104",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4250 1st Ave",
            "address_purpose": "LOCATION",
            "city": "San Diego",
            "state": "CA",
            "postal_code": "921032026",
            "country_code": "US",
            "telephone_number": "800-926-8273",
            "fax_number": "888-539-8781",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ELNAGGAR",
        "first_name": "MOHAMED",
        "middle_name": "BASSYOUNYABOUELEININ",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-06-29",
        "last_updated": "2026-07-13",
        "certification_date": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "210209",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "67275",
            "primary": false
        },
        {
            "code": "207RI0008X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hepatology",
            "state": "CA",
            "license": "210209",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alyssa Rena Elmore, PHARMD
• Dudley G Elmore III, RN,FNP
• Kyle Patrick Elmore, DDS
• Elias Elmouttaqi
• Khaled Elnaggar
• Eloise R. Johnston & Associates (Laurie Silverman & Associates)
• Eloise V. Foster, PH.D.
• Joanna K Elrick
• Reham Elsayed
• Brooke Mehgan Elsberry

• Internal Medicine Physician in San Diego, CA
• Providers in San Diego, CA by specialty
• Internal Medicine Physician in California

• 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.
• 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.