Individual provider Active NPI

John Howard Pollack, MD

  • Family Medicine Physician
  • Baltimore, MD
National Provider Identifier
1225657513
Registry record updated Aug 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
D0100875 Issued in MD
Practice address
1111 N Charles St
Baltimore, MD 21201-5505
Phone
(410) 837-2050
NPI assigned
Apr 16, 2020
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 25, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X D0100875 MD Primary
Family Medicine Physician 207Q00000X A181533 CA

Addresses

Primary practice location

1111 N Charles St
Baltimore, MD 21201-5505

Mailing address

3120 Erdman Ave
Baltimore, MD 21213-1720
Phone (410) 558-4800

Other names 1

  • Jack Pollack Other name

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
I20240812000082 MD Practitioner - Family Practice 9638532633 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Georgetown University School of Medicine, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Medstar Medical Group II LLCGroup PAC ID 0547413825, 3,726 clinicians
Baltimore Medical System, Inc.Group PAC ID 5395653455, 86 clinicians

Practice addresses (Care Compare)

1406 Crain S Hwy 106
Glen Burnie, MD 21061-4086
Phone (410) 768-6440

5525 Eastern Ave
Baltimore, MD 21224-2796
Phone (410) 558-4804

9000 Franklin Square Dr
Baltimore, MD 21237-3901
Phone (443) 777-7000

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A181533CAMDFamily Medicine Physician
D0100875MDMDFamily Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Medstar Medical Group II LLC CurrentSince Apr 4, 2025 Accepting new patients
Baltimore Medical System, Inc. CurrentSince Sep 1, 2024 Accepting new patients

Locations

3120 Erdman Ave
Baltimore, MD 21213
Phone (410) 558-4800

29955 Three Notch Rd
Ste 100
Charlotte Hall, MD 20622
Phone (301) 290-5300

1000 Stewart Ave
Glen Burnie, MD 21061

1406 Crain Hwy S
Ste 106
Glen Burnie, MD 21061
Phone (410) 768-6440

Interoperability endpoints

  • Direct secure messaging: john.pollack@6298537164804.direct.elationemr.com
  • Direct secure messaging: john.pollack.p1@direct.bmsi.nextgenshare.com
  • Direct secure messaging: jpollack582793@direct.ochin.org

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.

Hospital & facility affiliations 2

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": "1586995200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787616000000",
    "number": "1225657513",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3120 ERDMAN AVE",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212131720",
            "telephone_number": "410-558-4800",
            "fax_number": "410-276-7226"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1111 N CHARLES ST",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212015505",
            "telephone_number": "410-837-2050"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "POLLACK",
        "first_name": "JOHN",
        "middle_name": "HOWARD",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-04-16",
        "last_updated": "2026-08-25",
        "certification_date": "2026-08-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "MD",
            "license": "D0100875",
            "primary": true
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "A181533",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "JACK",
            "last_name": "POLLACK",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Baltimore, MD

Sources for this page

Verify at the official NPI Registry.