Individual provider Active NPI

Mahmoud Mohamad Ali El-Sayed, M.D.

  • Critical Care Medicine (Internal Medicine) Physician
  • Ballwin, MO
National Provider Identifier
1982618856
Registry record updated Dec 21, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X
License
036.114709 Issued in IL
Practice address
1409 Thomas Mason PL
Ballwin, MO 63011-4423
Phone
(314) 717-1717
NPI assigned
Jul 28, 2006
Last updated
Dec 21, 2021By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 21, 2021

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Critical Care Medicine (Internal Medicine) Physician 207RC0200X 036.114709 IL Primary

Addresses

Primary practice location

1409 Thomas Mason PL
Ballwin, MO 63011-4423

Mailing address

1409 Thomas Mason PL
Ballwin, MO 63011-4423
Phone (314) 717-1717

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address melsayed192143@ewd.direct.hshs.org Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MO, IL2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20150205000336 MO Practitioner - Critical Care (Intensivists) 0143225821 Reassigns benefits to 2 organizations
I20160829002459 IL Practitioner - Critical Care (Intensivists)Practitioner - Internal Medicine 0143225821 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Critical Care (Intensivists)Also: Internal Medicine
Education
Other, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

1 Saint Elizabeth Blvd
O Fallon, IL 62269-1099
Phone (618) 234-2120

200 Health Care Dr
Greenville, IL 62246-1154
Phone (618) 664-1230

503 N Maple St
Effingham, IL 62401-2006
Phone (217) 347-1236

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
036.114709ILMDCritical Care Medicine (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Cep America Illinois Intensivists Critical Care Medicine CurrentSince Aug 1, 2016 Accepting new patients
Physician Specialists of St Lukes LLC Critical Care Medicine CurrentSince Dec 13, 2025 Accepting new patients
Southeast Missouri Hospital Physicians, LLC CurrentSince Jun 1, 2019 Accepting new patients
Cep America Illinois Intensivists Critical Care Medicine CurrentSince Aug 1, 2016 Accepting new patients

Locations

1601 Cummins Dr
Ste D
Modesto, CA 95358
Phone (510) 851-7423

4500 Memorial Dr
Belleville, IL 62226
Phone (618) 233-7750

200 Health Care Dr
Greenville, IL 62246
Phone (618) 664-0808

1 Saint Elizabeth Blvd
O Fallon, IL 62269
Phone 618234212012438

1701 Lacey St
Cpe Girardeau, MO 63701
Phone (573) 334-4822

232 S Woods Mill Rd
Town and Country, MO 63017
Phone (314) 205-6030

Organizations & group practices 4

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1154044800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1640044800000",
    "number": "1982618856",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1409 THOMAS MASON PL",
            "city": "BALLWIN",
            "state": "MO",
            "postal_code": "630114423",
            "telephone_number": "314-717-1717"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1409 THOMAS MASON PL",
            "city": "BALLWIN",
            "state": "MO",
            "postal_code": "630114423",
            "telephone_number": "314-717-1717"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "EL-SAYED",
        "first_name": "MAHMOUD",
        "middle_name": "MOHAMAD ALI",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-28",
        "last_updated": "2021-12-21",
        "certification_date": "2021-12-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "IL",
            "license": "036.114709",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "melsayed192143@ewd.direct.hshs.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CDA/CCD/TXT",
            "address_1": "1 Saint Elizabeth Blvd",
            "city": "O Fallon",
            "state": "IL",
            "country_code": "US",
            "postal_code": "622691099",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Ballwin, MO

Sources for this page

Verify at the official NPI Registry.