Active NPI
Matthew David Pentkowski, LAADC
- Addiction (Substance Use Disorder) Counselor
- Newport Beach, CA
National Provider Identifier
1184414534
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Addiction (Substance Use Disorder) Counselor
- Practice address
- 336 Canal St
Newport Beach, CA 92663-1802 - Phone
- (949) 698-8531
- NPI assigned
- May 8, 2025
- 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 |
|---|---|---|---|---|
| Counselor | 101Y00000X | LR10290623 | CA | |
| Addiction (Substance Use Disorder) Counselor | 101YA0400X | Primary |
Addresses
Primary practice location
336 Canal St
Newport Beach, CA 92663-1802
Mailing address
336 Canal St
Newport Beach, CA 92663-1802
Phone (949) 698-8531
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
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| LR10290623 | CA | MD | Counselor |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1746662400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1748304000000",
"number": "1184414534",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "336 CANAL ST",
"city": "NEWPORT BEACH",
"state": "CA",
"postal_code": "926631802",
"telephone_number": "949-698-8531"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "336 CANAL ST",
"city": "NEWPORT BEACH",
"state": "CA",
"postal_code": "926631802",
"telephone_number": "949-698-8531"
}
],
"practiceLocations": [],
"basic": {
"last_name": "PENTKOWSKI",
"first_name": "MATTHEW",
"middle_name": "DAVID",
"credential": "LAADC",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2025-05-08",
"last_updated": "2025-05-27",
"certification_date": "2025-05-27",
"status": "A"
},
"taxonomies": [
{
"code": "101Y00000X",
"taxonomy_group": "",
"desc": "Counselor",
"state": "CA",
"license": "LR10290623",
"primary": false
},
{
"code": "101YA0400X",
"taxonomy_group": "",
"desc": "Counselor, Addiction (Substance Use Disorder)",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Newport Beach, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 27, 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.