Active NPI
Mark Greenbaum, MD
- Specialist
- Bronx, NY
National Provider Identifier
1003884180
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Specialist
- License
- 152004
- Practice address
- 3010 Grand Concourse
Bronx, NY 10458-1504 - Phone
- (203) 856-8550
- Fax
- (203) 557-3148
- NPI assigned
- Mar 14, 2006
- Last updated
- Jul 13, 2026
- Sex
- Male
- Sole proprietor
- No
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 |
|---|---|---|---|---|
| Specialist | 174400000X | 152004 | NY | Primary |
Addresses
Primary practice location
3010 Grand Concourse
Bronx, NY 10458-1504
Mailing address
3010 Grand Concourse
Bronx, NY 10458-1504
Phone (203) 856-8550
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 05853H | Other | NY | GHI MEDICARE |
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)
- Not enrolled
- HHS exclusion list flag
- CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found.
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| New York University | Past | Accepting new patients | |
| Integrative Medical Care PC | Specialist | Past | Accepting new patients |
| Nitin D.Narkhede, MD,LLC | Past | Accepting new patients | |
| Middletown Health Wellness Chiropractic PC | Past | Accepting new patients | |
| Kaplan & Gottlieb DC P.C | Past | Accepting new patients |
Organizations & group practices 5
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
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NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1142294400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1003884180",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "3010 GRAND CONCOURSE",
"city": "BRONX",
"state": "NY",
"postal_code": "104581504",
"telephone_number": "203-856-8550",
"fax_number": "203-557-3148"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "3010 GRAND CONCOURSE",
"city": "BRONX",
"state": "NY",
"postal_code": "104581504",
"telephone_number": "203-856-8550",
"fax_number": "203-557-3148"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GREENBAUM",
"first_name": "MARK",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-03-14",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "174400000X",
"taxonomy_group": "",
"desc": "Specialist",
"state": "NY",
"license": "152004",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "GHI MEDICARE",
"identifier": "05853H",
"state": "NY"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Bronx, NY
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.