Active NPI
MKR Medical PC
- Cardiovascular Disease Physician
- Brooklyn, NY
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Cardiovascular Disease Physician
- License
- 253288
- Legal business name
- MKR MEDICAL PC
- Practice address
- 828 Utica Ave
Brooklyn, NY 11203-3409 - Phone
- (718) 303-0851
- NPI assigned
- Feb 6, 2014
- Last updated
- Feb 12, 2026
- Organization subpart
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- Marc Rybstein, MD
- Title
- President
- Phone
- (516) 307-9618
Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | 253288 | NY | |
| Cardiovascular Disease Physician | 207RC0000X | 253288 | NY | Primary |
Addresses
Primary practice location
828 Utica Ave
Brooklyn, NY 11203-3409
Mailing address
545 E Jericho Tpke
Huntington Station, NY 11746-7325
Phone (718) 303-0851
Other practice location 1
447 Fenimore Street
Brooklyn, NY 11225
Phone (718) 303-0851
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY
Enrollment records 1
Laboratory certificates & supplier records
Derived by NPIMapThese CMS records do not include an NPI. They are shown because their name and street address match this provider’s.
CLIA laboratory certificates
| CLIA number | Laboratory | Certificate | Expires |
|---|---|---|---|
| 33D2284253 | MKR Medical PC | Certificate of waiver | Jun 20, 2027 |
National Provider Directory
National Provider DirectoryLocations
828 Utica Ave
Brooklyn, NY 11203
Phone (718) 303-0851
340 Dogwood Ave
#105
Franklin Square, NY 11010
Phone (516) 307-9617
900 Straight Path
Ste 2
West Babylon, NY 11704
Phone (631) 824-8610
Interoperability endpoints
- https://fhir4.healow.com/fhir/r4/EEACCD
Practitioners & affiliated clinicians
Practitioners 3
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.
-
- Cardiovascular Disease Physician
- Brooklyn, NY
- NPI 1538393822
-
- Nurse Practitioner
- New York, NY
- NPI 1053462523
-
- Medical Physician Assistant
- Brooklyn, NY
- NPI 1952136954
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1391644800000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1770854400000",
"number": "1417371774",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "545 E JERICHO TPKE",
"city": "HUNTINGTON STATION",
"state": "NY",
"postal_code": "117467325",
"telephone_number": "718-303-0851"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "828 UTICA AVE",
"city": "BROOKLYN",
"state": "NY",
"postal_code": "112033409",
"telephone_number": "718-303-0851"
}
],
"practiceLocations": [
{
"address_1": "447 FENIMORE STREET",
"address_purpose": "LOCATION",
"city": "BROOKLYN",
"state": "NY",
"postal_code": "11225",
"country_code": "US",
"telephone_number": "718-303-0851",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"organization_name": "MKR MEDICAL PC",
"organizational_subpart": "NO",
"enumeration_date": "2014-02-06",
"last_updated": "2026-02-12",
"certification_date": "2026-02-12",
"status": "A",
"authorized_official_last_name": "RYBSTEIN",
"authorized_official_first_name": "MARC",
"authorized_official_title_or_position": "PRESIDENT",
"authorized_official_telephone_number": "516-307-9618",
"authorized_official_credential": "MD"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "NY",
"license": "253288",
"primary": false
},
{
"code": "207RC0000X",
"taxonomy_group": "",
"desc": "Internal Medicine, Cardiovascular Disease",
"state": "NY",
"license": "253288",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Brooklyn, NY
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 12, 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.