Individual provider Active NPI

Colleen Elizabeth Hanlon

  • Anesthesiology Physician
  • Baltimore, MD
National Provider Identifier
1255800538
Registry record updated Apr 30, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
D0102030 Issued in MD
Practice address
600 N Wolfe St
Baltimore, MD 21287-0005
Phone
(410) 955-3080
NPI assigned
Nov 16, 2018
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 30, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X D0102030 MD Primary

Addresses

Primary practice location

600 N Wolfe St
Baltimore, MD 21287-0005

Mailing address

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

Other practice location 1

Mercy Medical Center, 345 St. Paul Place
Bunting Building, 7th Floor
Baltimore, MD 21202
Phone (410) 332-9694

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD
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

Enrollment IDStateProvider typePAC IDDetails
I20250518000025 MD Practitioner - Anesthesiology 7416475017 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Johns Hopkins University School of Medicine, 2021
Medicare assignment
May accept Medicare assignment
Group practices
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

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
D0102030MDMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Johns Hopkins University Current Accepting new patients
Johns Hopkins University CurrentSince Jun 1, 2025 Accepting new patients
Johns Hopkins University CurrentSince Jun 1, 2025 Accepting new patients

Locations

600 N Wolfe St
Baltimore, MD 21287

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

Interoperability endpoints

  • Direct secure messaging: cmaher431745@direct.hopkinsmedicine.org

Organizations & group practices 3

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": "1542326400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1745971200000",
    "number": "1255800538",
    "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": "600 N WOLFE ST",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212870005",
            "telephone_number": "410-955-3080"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "Mercy Medical Center, 345 St. Paul Place",
            "address_2": "Bunting Building, 7th Floor",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "21202",
            "country_code": "US",
            "telephone_number": "410-332-9694",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HANLON",
        "first_name": "COLLEEN",
        "middle_name": "ELIZABETH",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-11-16",
        "last_updated": "2025-04-30",
        "certification_date": "2025-04-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MD",
            "license": "D0102030",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Baltimore, MD

Sources for this page

Verify at the official NPI Registry.