Active NPI
Jeff Gehlhausen, MD, PHD
- Dermatology Physician
- New Haven, CT
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Dermatology Physician
- License
- 68647
- Practice address
- 2 Church St S Ste 305
New Haven, CT 06519-1717 - Phone
- (203) 785-4445
- NPI assigned
- May 4, 2017
- 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 |
|---|---|---|---|---|
| Dermatology Physician | 207N00000X | 68647 | CT | Primary |
Addresses
Primary practice location
2 Church St S Ste 305
New Haven, CT 06519-1717
Mailing address
Vanderbilt University Medical Ctr
1161 21St Avenue South, D-3100 Medical Center North
Nashville, TN 37232-0001
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CT
- 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
- Dermatology
- Education
- Indiana University School of Medicine, 2017
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
20 York St
New Haven, CT 06510-3220
Phone (203) 688-4242
800 Howard Ave
New Haven, CT 06519-1369
Phone (203) 785-2140
Hospital & facility affiliations
Merit-based Incentive Payment System (MIPS)
- Final score
- 87.36 of 100
- Quality
- 77.36
- Promoting interoperability
- 100
- Improvement activities
- 40
- Cost
- 74.27
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Removal of skin lesions | 82 |
| Skin biopsy | 45 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine, Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 68647 | CT | MD | Dermatology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Yale University | Current | Accepting new patients | |
| Yale University | Current | Accepting new patients | |
| Yale University | Dermatology | Current | Accepting new patients |
Locations
800 Howard Ave
New Haven, CT 06519
Phone (203) 785-2140
50 Division St
New Haven, CT 06511
Phone (203) 785-2140
Interoperability endpoints
- jgehlhausen396338@direct.ynhh.org
Organizations & group practices 3
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.
-
- Adult Mental Health Clinic/Center
- Hamden, CT
- NPI 1134391824
-
- Durable Medical Equipment & Medical Supplies
- Fairfield, CT
- NPI 1548066962
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- New Haven, CT
- NPI 1336139500
-
- General Acute Care Hospital
- New Haven, CT
- NPI 1578778726
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1493856000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1766793600000",
"number": "1992231302",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "VANDERBILT UNIVERSITY MEDICAL CTR",
"address_2": "1161 21ST AVENUE SOUTH, D-3100 MEDICAL CENTER NORTH",
"city": "NASHVILLE",
"state": "TN",
"postal_code": "372320001"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2 CHURCH ST S STE 305",
"city": "NEW HAVEN",
"state": "CT",
"postal_code": "065191717",
"telephone_number": "203-785-4445"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GEHLHAUSEN",
"first_name": "JEFF",
"credential": "MD, PHD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2017-05-04",
"last_updated": "2025-12-27",
"certification_date": "2025-12-27",
"status": "A"
},
"taxonomies": [
{
"code": "207N00000X",
"taxonomy_group": "",
"desc": "Dermatology",
"state": "CT",
"license": "68647",
"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 Dec 27, 2025; 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.