Active NPI
Mitchell James Clarke Elliott, MD
- Hematology & Oncology Physician
- New Haven, CT
National Provider Identifier
1275474868
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Hematology & Oncology Physician
- License
- 85015
- Practice address
- 300 George St Ste 120
New Haven, CT 06511-6624 - Phone
- (646) 530-3499
- NPI assigned
- Apr 6, 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 |
|---|---|---|---|---|
| Hematology & Oncology Physician | 207RH0003X | 85015 | CT | Primary |
Addresses
Primary practice location
300 George St Ste 120
New Haven, CT 06511-6624
Mailing address
300 George St Ste 120
New Haven, CT 06511-6624
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
Care Compare profile
Medicare Care Compare- Specialty
- Medical Oncology
- Education
- Other, 2019
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
PO Box
Suite 7309
New Haven, CT 06519
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 85015 | CT | MD | Hematology & Oncology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1775433600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1779753600000",
"number": "1275474868",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "300 GEORGE ST STE 120",
"city": "NEW HAVEN",
"state": "CT",
"postal_code": "065116624"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "300 GEORGE ST STE 120",
"city": "NEW HAVEN",
"state": "CT",
"postal_code": "065116624",
"telephone_number": "646-530-3499"
}
],
"practiceLocations": [],
"basic": {
"last_name": "ELLIOTT",
"first_name": "MITCHELL",
"middle_name": "JAMES CLARKE",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2026-04-06",
"last_updated": "2026-05-26",
"certification_date": "2026-05-26",
"status": "A"
},
"taxonomies": [
{
"code": "207RH0003X",
"taxonomy_group": "",
"desc": "Internal Medicine, Hematology & Oncology",
"state": "CT",
"license": "85015",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in New Haven, CT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 26, 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.