Individual provider Active NPI

Paul M Yen, M.D.

  • Endocrinology, Diabetes & Metabolism Physician
  • Baltimore, MD
National Provider Identifier
1255378477
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X
License
71446 Issued in MA
Practice address
4940 East Avenue Room B114
Johns Hopkins Bayview Med Center
Baltimore, MD 21224
Phone
(410) 550-4229
NPI assigned
May 31, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Endocrinology, Diabetes & Metabolism Physician 207RE0101X 71446 MA Primary

Addresses

Primary practice location

4940 East Avenue Room B114
Johns Hopkins Bayview Med Center
Baltimore, MD 21224

Mailing address

National Institute of Health
Ceb/Niddk 9000 Rockville Place
Bethesda, MD 20892-0001
Phone (410) 550-4229

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
71446MAMDEndocrinology, Diabetes & Metabolism Physician

NPI Registry JSON

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

{
    "created_epoch": "1149033600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1255378477",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "NATIONAL INSTITUTE OF HEALTH",
            "address_2": "CEB/NIDDK 9000 ROCKVILLE PLACE",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208920001",
            "telephone_number": "410-550-4229"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4940 EAST AVENUE ROOM B114",
            "address_2": "JOHNS HOPKINS BAYVIEW MED CENTER",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "21224",
            "telephone_number": "410-550-4229"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "YEN",
        "first_name": "PAUL",
        "middle_name": "M",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-31",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "MA",
            "license": "71446",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Baltimore, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.