NPIMap

Individual provider Active NPI

Chady Atallah, M.D.

  • Colon & Rectal Surgery Physician
  • Baltimore, MD
National Provider Identifier
1558637025
Registry record updated May 20, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Colon & Rectal Surgery PhysicianTaxonomy code 208C00000X
License
D0085648 Issued in MD
Practice address
Johns Hopkins
600 N Wolfe St - Tower 110
Baltimore, MD 21287
Phone
(410) 955-5020
NPI assigned
Mar 28, 2012
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 20, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Colon & Rectal Surgery Physician 208C00000X D0085648 MD Primary

Addresses

Primary practice location

Johns Hopkins
600 N Wolfe St - Tower 110
Baltimore, MD 21287

Mailing address

6201 Greenleigh Ave
Middle River, MD 21220-2004

Other practice location 1

8600 Old Georgetown Rd
Bethesda, MD 20814
Phone (301) 896-2578

Other practice location 2

660 S Euclid Ave
Saint Louis, MO 63110-1010
Phone (314) 362-5000

Other practice location 3

1 Barnes Jewish Hospital Plz
Saint Louis, MO 63110-1003
Phone (314) 747-3000

Electronic endpoints 2

TypeEndpointUseAffiliation
CONNECT URL https://esmd.officeally.io:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service Other Bluemark LLC / Office Ally
Direct Messaging Address catallah508927@nyumc.direct-ci.com

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20221215001593 NY Practitioner - Colorectal Surgery (Proctology) 2961650288 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Colorectal Surgery (Proctology)
Education
Other, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
New York UniversityGroup PAC ID 1355232422, 5,925 clinicians

Practice addresses (Care Compare)

240 E 38TH St
New York, NY 10016-2708
Phone (212) 263-7300

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
90.8 of 100Reported as group
Quality
91.79
Promoting interoperability
100
Improvement activities
40
Cost
75.18

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy14
Removal of tissue1-10
Removal of skin lesions1-10
Removal of the uterus1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
D0085648MDMDColon & Rectal Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
New York University CurrentSince Jan 1, 2023 Accepting new patients
New York University CurrentSince Jan 1, 2023 Accepting new patients
Frederick Health Hospital Inc Past Accepting new patients
NYU Langone Hospitals Past Accepting new patients

Locations

530 1st Ave
New York, NY 10016
Phone (212) 263-7216

240 E 38th St
New York, NY 10016
Phone (212) 263-6033

530 1st Ave
Ste 6B
New York, NY 10016
Phone (212) 263-7301

13303 Jamaica Ave
Richmond Hill, NY 11418
Phone (718) 206-6942

14 Wall St
Fl 9
Wall Street, NY 10005
Phone (646) 501-3224

Networks

  • Healthfirst Medicare Network H5989
  • Healthfirst Medicare Network H9678
  • Healthfirst Medicare Network H3359
  • Healthfirst Medicare Network H1722

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 and National Provider Directory roles.

Hospital & facility affiliations 8

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": "1332892800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779235200000",
    "number": "1558637025",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6201 GREENLEIGH AVE",
            "city": "MIDDLE RIVER",
            "state": "MD",
            "postal_code": "212202004"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "JOHNS HOPKINS",
            "address_2": "600 N WOLFE ST - TOWER 110",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "21287",
            "telephone_number": "410-955-5020"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8600 Old Georgetown Rd",
            "address_purpose": "LOCATION",
            "city": "Bethesda",
            "state": "MD",
            "postal_code": "20814",
            "country_code": "US",
            "telephone_number": "301-896-2578",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "660 S Euclid Ave",
            "address_purpose": "LOCATION",
            "city": "Saint Louis",
            "state": "MO",
            "postal_code": "631101010",
            "country_code": "US",
            "telephone_number": "314-362-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1 Barnes Jewish Hospital Plz",
            "address_purpose": "LOCATION",
            "city": "Saint Louis",
            "state": "MO",
            "postal_code": "631101003",
            "country_code": "US",
            "telephone_number": "314-747-3000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ATALLAH",
        "first_name": "CHADY",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-03-28",
        "last_updated": "2026-05-20",
        "certification_date": "2026-05-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208C00000X",
            "taxonomy_group": "",
            "desc": "Colon & Rectal Surgery",
            "state": "MD",
            "license": "D0085648",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "https://esmd.officeally.io:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service",
            "affiliation": "Y",
            "endpointDescription": "2.16.840.1.113883.3.2019.3",
            "affiliationName": "Bluemark LLC / Office Ally",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "CMS esMD eMDR",
            "address_1": "1300 SE Cardinal Ct Ste 190",
            "city": "Vancouver",
            "state": "WA",
            "country_code": "US",
            "postal_code": "986839683",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "catallah508927@nyumc.direct-ci.com",
            "affiliation": "N",
            "address_1": "530 1st Ave",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100166402",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Baltimore, MD

Sources for this page

Verify at the official NPI Registry.