Active NPI
Mark Steven Kestner, MD
- Surgical Critical Care Physician
- Portland, OR
National Provider Identifier
1407964968
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Surgical Critical Care Physician
- License
- MD23365
- Practice address
- 501 N Graham St
Suite 580
Portland, OR 97227-1654 - Phone
- (503) 528-0704
- Fax
- (503) 528-0708
- NPI assigned
- Aug 26, 2006
- Sex
- Male
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Surgery Physician | 208600000X | MD23365 | OR | |
| Surgical Critical Care Physician | 2086S0102X | MD23365 | OR | Primary |
| Trauma Surgery Physician | 2086S0127X | MD23365 | OR |
Addresses
Primary practice location
501 N Graham St
Suite 580
Portland, OR 97227-1654
Mailing address
2801 N Gantenbein Ave
Portland, OR 97227-1623
Phone (503) 413-4647
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 287209 | Medicaid | OR |
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)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| MD23365 | OR | MD | Surgery Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Pacific Surgical PC | Past | Accepting new patients | |
| TS Billings, LLC | Trauma Surgery | Past | Accepting new patients |
Organizations & group practices 2
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.
-
- Specialist
- Portland, OR
- NPI 1396792990
-
- Trauma Surgery Physician
- Portland, OR
- NPI 1497776488
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1156550400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1407964968",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2801 N GANTENBEIN AVE",
"city": "PORTLAND",
"state": "OR",
"postal_code": "972271623",
"telephone_number": "503-413-4647"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "501 N GRAHAM ST",
"address_2": "SUITE 580",
"city": "PORTLAND",
"state": "OR",
"postal_code": "972271654",
"telephone_number": "503-528-0704",
"fax_number": "503-528-0708"
}
],
"practiceLocations": [],
"basic": {
"last_name": "KESTNER",
"first_name": "MARK",
"middle_name": "STEVEN",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2006-08-26",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "208600000X",
"taxonomy_group": "",
"desc": "Surgery",
"state": "OR",
"license": "MD23365",
"primary": false
},
{
"code": "2086S0102X",
"taxonomy_group": "",
"desc": "Surgery, Surgical Critical Care",
"state": "OR",
"license": "MD23365",
"primary": true
},
{
"code": "2086S0127X",
"taxonomy_group": "",
"desc": "Surgery, Trauma Surgery",
"state": "OR",
"license": "MD23365",
"primary": false
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "287209",
"state": "OR"
}
],
"endpoints": [],
"other_names": []
}Other providers in Portland, OR
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.