Active NPI
Justin Komisarof, MD
- Hematology & Oncology Physician
- Houston, TX
National Provider Identifier
1821653502
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Hematology & Oncology Physician
- License
- W5414
- Practice address
- 1515 Holcombe Blvd
Houston, TX 77030-4000 - Phone
- (713) 792-6161
- NPI assigned
- May 7, 2019
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Hematology & Oncology Physician | 207RH0003X | W5414 | TX | Primary |
| Internal Medicine Physician | 207R00000X | W5414 | TX |
Addresses
Primary practice location
1515 Holcombe Blvd
Houston, TX 77030-4000
Mailing address
P O Box 4439
Houston, TX 77210-4439
Phone (713) 792-2991
Electronic endpoints 2
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | jkomisarof51517@direct.urmc.rochester.edu | Direct | |
| Direct Messaging Address | jkomisarof51517@direct.urmc.rochester.edu | Direct |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1557187200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1787616000000",
"number": "1821653502",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "P O BOX 4439",
"city": "HOUSTON",
"state": "TX",
"postal_code": "772104439",
"telephone_number": "713-792-2991"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1515 HOLCOMBE BLVD",
"city": "HOUSTON",
"state": "TX",
"postal_code": "770304000",
"telephone_number": "713-792-6161"
}
],
"practiceLocations": [],
"basic": {
"last_name": "KOMISAROF",
"first_name": "JUSTIN",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2019-05-07",
"last_updated": "2026-08-25",
"certification_date": "2026-08-25",
"status": "A"
},
"taxonomies": [
{
"code": "207RH0003X",
"taxonomy_group": "",
"desc": "Internal Medicine, Hematology & Oncology",
"state": "TX",
"license": "W5414",
"primary": true
},
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "TX",
"license": "W5414",
"primary": false
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "jkomisarof51517@direct.urmc.rochester.edu",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "OTHER",
"address_1": "601 Elmwood Ave",
"city": "Rochester",
"state": "NY",
"country_code": "US",
"postal_code": "146420001",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "jkomisarof51517@direct.urmc.rochester.edu",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "OTHER",
"address_1": "601 Elmwood Ave",
"city": "Rochester",
"state": "NY",
"country_code": "US",
"postal_code": "146420001",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Houston, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 25, 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.