Individual provider Active NPI

Mark Mazer, MD

  • Psychiatry Physician
  • Baltimore, MD
National Provider Identifier
1427577105
Registry record updated Aug 8, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatry PhysicianTaxonomy code 2084P0800X
License
D0097631 Issued in MD
Practice address
701 W Pratt St FL 2
Baltimore, MD 21201-1023
Phone
(410) 328-6018
Fax
(410) 328-6391
NPI assigned
Sep 14, 2017
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 8, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Child & Adolescent Psychiatry Physician 2084P0804X D0097631 MD
Psychiatry Physician 2084P0800X D0097631 MD Primary

Addresses

Primary practice location

701 W Pratt St FL 2
Baltimore, MD 21201-1023

Mailing address

701 W Pratt St FL 2
Baltimore, MD 21201-1023

Other practice location 1

22 S Greene St
Baltimore, MD 21201-1590
Phone (410) 328-6018

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
I20250822001393 MD Practitioner - Psychiatry 7810497047 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Psychiatry
Education
Other, 2019
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

701 W Pratt St
FL 2
Baltimore, MD 21201-1023

PO Box
Suite 64515
Baltimore, MD 21264

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
University of Maryland Psychiatry Associates, PA Psychiatry CurrentSince Aug 11, 2025 Accepting new patients
University of Maryland Psychiatry Associates PA Child & Adolescent Psychiatry PastSince Oct 12, 2025 Accepting new patients

Locations

701 W Pratt St
Fl 2
Baltimore, MD 21201
Phone (410) 328-2207

701 W Pratt St
Baltimore, MD 21201
Phone (410) 328-5881

22 S Greene St
Baltimore, MD 21201
Phone (410) 328-5793

Interoperability endpoints

  • Direct secure messaging: mmazer1028018@direct.umm.edu

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1505347200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754611200000",
    "number": "1427577105",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "701 W PRATT ST FL 2",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212011023"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "701 W PRATT ST FL 2",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212011023",
            "telephone_number": "410-328-6018",
            "fax_number": "410-328-6391"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "22 S Greene St",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212011590",
            "country_code": "US",
            "telephone_number": "410-328-6018",
            "fax_number": "410-328-6391",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAZER",
        "first_name": "MARK",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-09-14",
        "last_updated": "2025-08-08",
        "certification_date": "2025-08-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0804X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Child & Adolescent Psychiatry",
            "state": "MD",
            "license": "D0097631",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "MD",
            "license": "D0097631",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Baltimore, MD

Sources for this page

Verify at the official NPI Registry.