Individual provider Active NPI

Stephen R Dieker Jr., MD

  • Anesthesiology Physician
  • Eureka, CA
National Provider Identifier
1174731004
Registry record updated Oct 21, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
A116949 Issued in CA
Practice address
2752 Harrison Ave
Suite a
Eureka, CA 95501-4738
Phone
(707) 268-0190
Fax
(707) 445-3076
NPI assigned
May 21, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 21, 2021

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 2007016507 MO
Anesthesiology Physician 207L00000X A116949 CA Primary

Addresses

Primary practice location

2752 Harrison Ave
Suite a
Eureka, CA 95501-4738

Mailing address

2752 Harrison Ave
Suite a
Eureka, CA 95501-4738
Phone (707) 268-0190

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address sdieker1657645@oc.providencedirect.org

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, CO2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20110930000515 CA Practitioner - AnesthesiologyPractitioner - Critical Care (Intensivists) 1557533296 Reassigns benefits to 1 organization
I20250814004838 CO Practitioner - Anesthesiology 1557533296 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
AnesthesiologyAlso: Critical Care (Intensivists)
Education
Other, 2005
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Providence Medical FoundationGroup PAC ID 8921993205, 1,461 clinicians
US Anesthesia Partners of Colorado IncGroup PAC ID 6002072055, 472 clinicians

Practice addresses (Care Compare)

1165 Montgomery Dr
Santa Rosa, CA 95405-4801
Phone (707) 546-3210

2222 N Nevada Ave
Penrose Hospital
Colorado Springs, CO 80907-6819
Phone (303) 438-3999

2700 Dolbeer St
Eureka, CA 95501-4736
Phone (707) 445-8121

2710 Dolbeer St
Eureka, CA 95501-4736
Phone (707) 267-2060

3300 Renner Dr
Fortuna, CA 95540-3120
Phone (707) 725-3361

500 Doyle Park Dr
Santa Rosa, CA 95405-4559

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A116949CAMDAnesthesiology Physician
2007016507MOMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
US Anesthesia Partners of Colorado Inc. Anesthesiology CurrentSince Jul 28, 2025 Accepting new patients
Providence Medical Foundation Current Accepting new patients
Providence Medical Foundation CurrentSince Aug 22, 2011 Accepting new patients
Providence Medical Foundation Anesthesiology CurrentSince Aug 22, 2011 Accepting new patients
Providence Medical Foundation Past Accepting new patients
St. Joseph Health Northern California, LLC Past Accepting new patients

Locations

200 W Ctr St Promenade
Ste 400
Anaheim, CA 92805

2752 Harrison Ave
#A
Eureka, CA 95501
Phone (707) 268-0190

2700 Dolbeer St
Eureka, CA 95501
Phone (707) 269-4229

3300 Renner Dr
Fortuna, CA 95540
Phone (707) 725-3361

500 Doyle Park Dr
Ste 100
Santa Rosa, CA 95405
Phone (714) 449-4842

1165 Montgomery Dr
#1112
Santa Rosa, CA 95405
Phone (707) 546-3210

2222 N Nevada Ave
Colorado Springs, CO 80907
Phone (719) 776-5333

8000 E Maplewood Ave
Ste 120
Greenwood Village, CO 80111

10101 Ridgegate Pkwy
Lone Tree, CO 80124
Phone (720) 225-1000

12222 Merit Dr
Ste 600
Dallas, TX 75251
Phone (972) 361-1844

Organizations & group practices 6

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.

Hospital & facility affiliations 6

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1179705600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1634774400000",
    "number": "1174731004",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2752 HARRISON AVE",
            "address_2": "SUITE A",
            "city": "EUREKA",
            "state": "CA",
            "postal_code": "955014738",
            "telephone_number": "707-268-0190",
            "fax_number": "707-445-3076"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2752 HARRISON AVE",
            "address_2": "SUITE A",
            "city": "EUREKA",
            "state": "CA",
            "postal_code": "955014738",
            "telephone_number": "707-268-0190",
            "fax_number": "707-445-3076"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DIEKER",
        "first_name": "STEPHEN",
        "middle_name": "R",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-05-21",
        "last_updated": "2021-10-21",
        "certification_date": "2021-10-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MO",
            "license": "2007016507",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "A116949",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "sdieker1657645@oc.providencedirect.org",
            "affiliation": "N",
            "address_1": "2700 Dolbeer St",
            "city": "Eureka",
            "state": "CA",
            "country_code": "US",
            "postal_code": "955014736",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Eureka, CA

Sources for this page

Verify at the official NPI Registry.