Active NPI
Clifford J. Opatken, M.D., S.C.
- Pain Medicine (Anesthesiology) Physician
- Oconomowoc, WI
National Provider Identifier
1710934328
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pain Medicine (Anesthesiology) Physician
- Legal business name
- CLIFFORD J. OPATKEN, M.D., S.C.
- Practice address
- 791 E Summit Ave
Oconomowoc, WI 53066-3844 - Phone
- (262) 569-9400
- NPI assigned
- May 28, 2006
- Last updated
- Sep 11, 2025
- Organization subpart
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- Clifford J Opatken, M.D.
- Title
- Authorized Official
- Phone
- (262) 569-9400
Authorized official NPPES reports the official by name only. The link goes to the one practitioner with that name whose NPPES practice address or phone number is this organization’s.
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Anesthesiology Physician | 207L00000X | |||
| Pain Medicine (Anesthesiology) Physician | 207LP2900X | Primary |
Addresses
Primary practice location
791 E Summit Ave
Oconomowoc, WI 53066-3844
Mailing address
225 S Executive Dr
Brookfield, WI 53005-4266
Phone (262) 787-4026
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 30662700 | Medicaid | WI |
National Provider Directory
National Provider DirectoryPractitioners & affiliated clinicians
Practitioners 1
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.
-
- Anesthesiology Physician
- West Allis, WI
- NPI 1386628758
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1148774400000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1757548800000",
"number": "1710934328",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "225 S EXECUTIVE DR",
"city": "BROOKFIELD",
"state": "WI",
"postal_code": "530054266",
"telephone_number": "262-787-4026"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "791 E SUMMIT AVE",
"city": "OCONOMOWOC",
"state": "WI",
"postal_code": "530663844",
"telephone_number": "262-569-9400"
}
],
"practiceLocations": [],
"basic": {
"organization_name": "CLIFFORD J. OPATKEN, M.D., S.C.",
"organizational_subpart": "NO",
"enumeration_date": "2006-05-28",
"last_updated": "2025-09-11",
"status": "A",
"authorized_official_last_name": "OPATKEN",
"authorized_official_first_name": "CLIFFORD",
"authorized_official_middle_name": "J",
"authorized_official_title_or_position": "AUTHORIZED OFFICIAL",
"authorized_official_telephone_number": "262-569-9400",
"authorized_official_credential": "M.D."
},
"taxonomies": [
{
"code": "207L00000X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Anesthesiology",
"state": null,
"license": null,
"primary": false
},
{
"code": "207LP2900X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Anesthesiology, Pain Medicine",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "30662700",
"state": "WI"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Oconomowoc, WI
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.