Active NPI
Zachary Joseph Jaeger, MD
- Student in an Organized Health Care Education/Training Program
- New Haven, CT
National Provider Identifier
1891369369
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Student in an Organized Health Care Education/Training Program
- Practice address
- 20 York St
New Haven, CT 06510-3220 - Phone
- (203) 688-4242
- NPI assigned
- May 18, 2021
- Last updated
- Jun 25, 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Dermatology Physician | 207N00000X | A192350 | CA | |
| Student in an Organized Health Care Education/Training Program | 390200000X | Primary | ||
| Internal Medicine Physician | 207R00000X | 36236-R | PR |
Addresses
Primary practice location
20 York St
New Haven, CT 06510-3220
Mailing address
20 York St
New Haven, CT 06510-3220
Phone (203) 688-4242
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| CONNECT URL | n/a | Other |
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
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A192350 | CA | MD | Dermatology Physician |
| 36236-R | PR | MD | Internal Medicine Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1621296000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1782345600000",
"number": "1891369369",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "20 YORK ST",
"city": "NEW HAVEN",
"state": "CT",
"postal_code": "065103220",
"telephone_number": "203-688-4242"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "20 YORK ST",
"city": "NEW HAVEN",
"state": "CT",
"postal_code": "065103220",
"telephone_number": "203-688-4242"
}
],
"practiceLocations": [],
"basic": {
"last_name": "JAEGER",
"first_name": "ZACHARY",
"middle_name": "JOSEPH",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2021-05-18",
"last_updated": "2026-06-25",
"certification_date": "2026-06-25",
"status": "A"
},
"taxonomies": [
{
"code": "207N00000X",
"taxonomy_group": "",
"desc": "Dermatology",
"state": "CA",
"license": "A192350",
"primary": false
},
{
"code": "390200000X",
"taxonomy_group": "",
"desc": "Student in an Organized Health Care Education/Training Program",
"state": null,
"license": null,
"primary": true
},
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "PR",
"license": "36236-R",
"primary": false
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "CONNECT",
"endpointTypeDescription": "CONNECT URL",
"endpoint": "n/a",
"affiliation": "N",
"endpointDescription": "n/a",
"use": "OTHER",
"useDescription": "Other",
"useOtherDescription": "n/a",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "n/a",
"address_1": "n/a",
"city": "n/a",
"state": "MO",
"country_code": "US",
"postal_code": "63110",
"country_name": "United States",
"address_type": "DOM"
}
],
"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 Jun 25, 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.