Individual provider Active NPI

Ajit Singh

  • Internal Medicine Physician
  • Baltimore, MD
National Provider Identifier
1205413887
Registry record updated Jun 30, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
D0104074 Issued in MD
Practice address
1800 Orleans St
Baltimore, MD 21287-0010
Phone
(410) 955-5000
NPI assigned
Mar 28, 2021
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 30, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X D0104074 MD Primary

Addresses

Primary practice location

1800 Orleans St
Baltimore, MD 21287-0010

Mailing address

6201 Greenleigh Ave
Baltimore, MD 21220-2004
Phone (410) 933-6423

Other practice location 1

800 Spruce St
Philadelphia, PA 19107-6130
Phone (203) 947-0915

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA, MD2 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
I20240618001632 PA Practitioner - Internal Medicine 9638612765 Reassigns benefits to 1 organization
I20250618003412 MD Practitioner - Internal MedicinePractitioner - Hospitalist 9638612765 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal MedicineAlso: Hospitalist
Education
University of Pittsburgh School of Medicine, 2021
Medicare assignment
May accept Medicare assignment
Group practices
Johns Hopkins UniversityGroup PAC ID 4981745098, 711 clinicians
Johns Hopkins UniversityGroup PAC ID 8921903147, 2,886 clinicians

Practice addresses (Care Compare)

600 N Wolf St
Baltimore, MD 21287-0005
Phone (410) 955-5000

600 N Wolfe St
Blalock 266
Baltimore, MD 21287-0005
Phone (410) 502-4340

6201 Greenleigh Ave
Middle River, MD 21220-2004

Hospital & facility affiliations

  • Johns Hopkins Hospital, the Hospital, Baltimore, MD, CCN 210009

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
D0104074MDMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Clinical Care Associates of the University of CurrentSince Jun 25, 2024 Accepting new patients
Johns Hopkins University CurrentSince Jul 1, 2025 Accepting new patients
Johns Hopkins University CurrentSince Jul 1, 2025 Accepting new patients
Johns Hopkins University Internal Medicine CurrentSince Jul 1, 2025 Accepting new patients
Clinical Care Associates of the University of Pennsylvania Health CurrentSince Jun 25, 2024 Accepting new patients
Johns Hopkins University CurrentSince Jul 1, 2025 Accepting new patients
Johns Hopkins University Current Accepting new patients
Clinical Care Associates of the University of Pennsylvania Health Internal Medicine Current Accepting new patients
The Johns Hopkins Hospital Past Accepting new patients
The Pennsylvania Hospital of the University of Pennsylvania Health Sys Past Accepting new patients

Locations

5601 Loch Raven Blvd
Baltimore, MD 21239
Phone (443) 444-4714

600 N Wolfe St
Baltimore, MD 21287

1800 Orleans St
Baltimore, MD 21287
Phone (410) 502-2037

6201 Greenleigh Ave
Middle River, MD 21220
Phone (410) 933-2704

800 Spruce St
Fl 1
Philadelphia, PA 19107
Phone (215) 829-5873

800 Spruce St
#1W
Philadelphia, PA 19107
Phone (215) 829-7817

800 Spruce St
William Penn Annex West, PA 19107
Phone (215) 829-3867

777 Township Line Rd
Ste 200
Yardley, PA 19067
Phone (215) 860-0775

Interoperability endpoints

  • Direct secure messaging: asingh1384603@direct.hopkinsmedicine.org

Organizations & group practices 10

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 1

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": "1616889600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751241600000",
    "number": "1205413887",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6201 GREENLEIGH AVE",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212202004",
            "telephone_number": "410-933-6423"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1800 ORLEANS ST",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212870010",
            "telephone_number": "410-955-5000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "800 Spruce St",
            "address_purpose": "LOCATION",
            "city": "Philadelphia",
            "state": "PA",
            "postal_code": "191076130",
            "country_code": "US",
            "telephone_number": "203-947-0915",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SINGH",
        "first_name": "AJIT",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-03-28",
        "last_updated": "2025-06-30",
        "certification_date": "2025-06-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MD",
            "license": "D0104074",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Baltimore, MD

Sources for this page

Verify at the official NPI Registry.