NPIMap

Organization Active NPI

Union Hospital of Cecil County, Inc.

Doing business as Union Endocrinology

  • Endocrinology, Diabetes & Metabolism Physician
  • Elkton, MD
National Provider Identifier
1851142640
Registry record updated Feb 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X
Legal business name
UNION HOSPITAL OF CECIL COUNTY, INC.
Doing business as
Union Endocrinology
Practice address
137 W High St Ste 1B
Elkton, MD 21921-8614
Phone
(410) 620-3548
NPI assigned
Mar 29, 2024
Last updated
Feb 17, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Feb 17, 2026

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

Authorized official

Name
Judy Riesen
Title
Corporate Director of Revenue Cycle
Phone
(302) 623-7168

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X
Endocrinology, Diabetes & Metabolism Physician 207RE0101X Primary
Physician Assistant 363A00000X

Addresses

Primary practice location

137 W High St Ste 1B
Elkton, MD 21921-8614

Mailing address

4000 Nexus Dr # E3
Wilmington, DE 19803-3000
Phone (302) 428-6782

Other names 1

  • Union Endocrinology Doing business as

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20040121001109 MD Part B Supplier - Clinic/Group Practice 6901719822 Receives reassigned benefits from 546 practitioners
22 other NPIs on this enrollment
This NPI is an additional NPI on the enrollment
Practice locations: Rising Sun, MD; Perryville, MD; North East, MD; Elkton, MD

Other NPIs on the same Medicare enrollment 22

NPIs listed together on one Medicare enrollment, typically parts of the same organization.

View all 22

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
21D2030808Union Endocrinology137 West High Street, Suite 1B, Elkton, MD 21921Certificate of waiverOct 4, 2027

National Provider Directory

National Provider Directory
Tax ID family
Edgar Folk III MD38 organizations share this tax ID, including this one

Other organizations with this tax ID 37

Organizations that report the same tax identification number in the National Provider Directory.

View all 37

Locations

4000 Nexus Dr
#E3
Wilmington, DE 19803

Practitioners & affiliated clinicians

Practitioners 10

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1711670400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1771286400000",
    "number": "1851142640",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4000 NEXUS DR # E3",
            "city": "WILMINGTON",
            "state": "DE",
            "postal_code": "198033000",
            "telephone_number": "302-428-6782"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "137 W HIGH ST STE 1B",
            "city": "ELKTON",
            "state": "MD",
            "postal_code": "219218614",
            "telephone_number": "410-620-3548"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "UNION HOSPITAL OF CECIL COUNTY, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2024-03-29",
        "last_updated": "2026-02-17",
        "certification_date": "2026-02-17",
        "status": "A",
        "authorized_official_last_name": "RIESEN",
        "authorized_official_first_name": "JUDY",
        "authorized_official_title_or_position": "CORPORATE DIRECTOR OF REVENUE CYCLE",
        "authorized_official_telephone_number": "302-623-7168"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Union Endocrinology",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Elkton, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 17, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.