Active NPI
Gregory Stephen Kazarian, MD
- Orthopaedic Surgery Physician
- New York, NY
National Provider Identifier
1932736634
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Orthopaedic Surgery Physician
- License
- 312600-01
- Practice address
- 535 E 70TH St
New York, NY 10021-4823 - Phone
- (212) 606-1000
- NPI assigned
- Mar 24, 2020
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Orthopaedic Surgery Physician | 207X00000X | 312600-01 | NY | Primary |
Addresses
Primary practice location
535 E 70TH St
New York, NY 10021-4823
Mailing address
2 Marissa Cir
Worcester, MA 01604-2674
Phone (508) 742-7957
Other names 1
- Dr. Greg Stephen Kazarian
Electronic endpoints 4
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| FHIR URL | https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/R4/ | Direct | |
| FHIR URL | https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/DSTU2 | Direct | |
| Direct Messaging Address | kazariang@hss.edu | Direct | |
| Direct Messaging Address | gkazarian109072@direct.HSS.edu | Direct |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Orthopedic Surgery
- Education
- Other, 2020
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
535 E 70TH St
New York, NY 10021-4823
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Interoperability endpoints
- gkazarian109072@direct.hss.edu
Organizations & group practices 1
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.
-
- Orthopaedic Surgery Physician
- New York, NY
- NPI 1902243488
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1585008000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783641600000",
"number": "1932736634",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2 MARISSA CIR",
"city": "WORCESTER",
"state": "MA",
"postal_code": "016042674",
"telephone_number": "508-742-7957"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "535 E 70TH ST",
"city": "NEW YORK",
"state": "NY",
"postal_code": "100214823",
"telephone_number": "212-606-1000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "KAZARIAN",
"first_name": "GREGORY",
"middle_name": "STEPHEN",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2020-03-24",
"last_updated": "2026-07-10",
"certification_date": "2026-07-10",
"status": "A"
},
"taxonomies": [
{
"code": "207X00000X",
"taxonomy_group": "",
"desc": "Orthopaedic Surgery",
"state": "NY",
"license": "312600-01",
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "FHIR",
"endpointTypeDescription": "FHIR URL",
"endpoint": "https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/R4/",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "CCDA",
"address_1": "535 E 70th St",
"city": "New York",
"state": "NY",
"country_code": "US",
"postal_code": "100214823",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "FHIR",
"endpointTypeDescription": "FHIR URL",
"endpoint": "https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/DSTU2",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "CCDA",
"address_1": "535 E 70th St",
"city": "New York",
"state": "NY",
"country_code": "US",
"postal_code": "100214823",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "kazariang@hss.edu",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "CCDA",
"address_1": "535 E 70th St",
"city": "New York",
"state": "NY",
"country_code": "US",
"postal_code": "100214823",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "gkazarian109072@direct.HSS.edu",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "CCDA",
"address_1": "535 E 70th St",
"city": "New York",
"state": "NY",
"country_code": "US",
"postal_code": "100214823",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": [
{
"first_name": "GREG",
"last_name": "KAZARIAN",
"middle_name": "STEPHEN",
"prefix": "DR.",
"credential": "MD",
"code": "5",
"type": "Other Name"
}
]
}Other providers in New York, NY
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 10, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- 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.