Individual provider Active NPI

Michael Ernest Korchak, M.D.

  • Cornea and External Diseases Specialist Physician
  • Upper Marlboro, MD
National Provider Identifier
1750647186
Registry record updated Jun 23, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cornea and External Diseases Specialist PhysicianTaxonomy code 207WX0120X
License
D83188 Issued in MD
Practice address
1221 Mercantile LN
Upper Marlboro, MD 20774-5374
Phone
(301) 618-5500
NPI assigned
Apr 10, 2012
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 23, 2021

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Ophthalmology Physician 207W00000X 283240 NY
Cornea and External Diseases Specialist PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207WX0120X D83188 MD Primary

Addresses

Primary practice location

1221 Mercantile LN
Upper Marlboro, MD 20774-5374

Mailing address

1035 N Kensington St
Arlington, VA 22205-2337
Phone (917) 373-9666

Other practice location 1

1305 York Ave
Floor 11
New York, NY 10021-5663
Phone (646) 962-5458

Electronic endpoints 1

TypeEndpointUseAffiliation
SOAP URL https://careepiceast.kp.org:14430/Interconnect-prodmam/wcf/epic.community.hie/xcpdrespondinggateways Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, VA, MD3 enrollments
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 3

Enrollment IDStateProvider typePAC IDDetails
I20170912000876 DC Practitioner - Ophthalmology 4587956602 Reassigns benefits to 1 organization
I20250728000198 VA Practitioner - Ophthalmology 4587956602 Reassigns benefits to 2 organizations
I20260211003586 MD Practitioner - Ophthalmology 4587956602 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Ophthalmology
Education
Georgetown University School of Medicine, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Kaiser Foundation Health Plan of the Mid Atlantic States, IncGroup PAC ID 3779495858, shared by 17 NPIs, 1,921 clinicians

Practice addresses (Care Compare)

1221 Mercantile LN
Largo, MD 20774-5374
Phone (301) 618-5700

13285 Minnieville Rd
Woodbridge, VA 22192-4018
Phone (703) 986-2400

14139 Potomac Mills Rd
Woodbridge, VA 22192-4644
Phone (703) 257-3000

Procedures performed for Medicare patients

ProcedureNumber of procedures
Cataract surgery1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
D83188MDMDCornea and External Diseases Specialist Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Dec 23, 2025 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Jul 31, 2017 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Multi-Specialty CurrentSince Dec 23, 2025 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Jul 31, 2017 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince May 19, 2025 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Multi-Specialty CurrentSince May 19, 2025 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Dec 23, 2025 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Multi-Specialty Current Accepting new patients

Locations

7070 Samuel Morse Dr
Columbia, MD 21046
Phone (410) 309-4600

1701 Twin Springs Rd
Halethorpe, MD 21227
Phone (410) 737-5000

4000 Garden City Dr
Fl 4
Hyattsville, MD 20785
Phone (227) 229-8532

2101 E Jefferson St
#4E
Rockville, MD 20852

2101 E Jefferson St
Ste 4EAST
Rockville, MD 20852

2101 E Jefferson St
Ste 6
Rockville, MD 20852

2101 E Jefferson St
Ste 4EPFS
Rockville, MD 20852

2391 Greenspring Dr
Timonium, MD 21093
Phone (410) 847-3000

6701 N Charles St
Towson, MD 21204
Phone (443) 849-2000

1221 Mercantile Ln
Upper Marlboro, MD 20774
Phone (301) 618-5500

13285 Minnieville Rd
Woodbridge, VA 22192
Phone (703) 986-2400

14139 Potomac Mills Rd
Woodbridge, VA 22192
Phone (703) 257-3000

Organizations & group practices 8

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": "1334016000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1624406400000",
    "number": "1750647186",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1035 N KENSINGTON ST",
            "city": "ARLINGTON",
            "state": "VA",
            "postal_code": "222052337",
            "telephone_number": "917-373-9666"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1221 MERCANTILE LN",
            "city": "UPPER MARLBORO",
            "state": "MD",
            "postal_code": "207745374",
            "telephone_number": "301-618-5500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1305 York Ave",
            "address_2": "Floor 11",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100215663",
            "country_code": "US",
            "telephone_number": "646-962-5458",
            "fax_number": "646-962-0609",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KORCHAK",
        "first_name": "MICHAEL",
        "middle_name": "ERNEST",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2012-04-10",
        "last_updated": "2021-06-23",
        "certification_date": "2021-06-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "NY",
            "license": "283240",
            "primary": false
        },
        {
            "code": "207WX0120X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Ophthalmology, Cornea and External Diseases Specialist",
            "state": "MD",
            "license": "D83188",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepiceast.kp.org:14430/Interconnect-prodmam/wcf/epic.community.hie/xcpdrespondinggateways",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "1221 Mercantile Ln",
            "city": "Upper Marlboro",
            "state": "MD",
            "country_code": "US",
            "postal_code": "207745374",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Upper Marlboro, MD

Sources for this page

Verify at the official NPI Registry.