Stephen T. Penepacker, MD

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

C180768 Issued in CA

Practice address

2178 Johnson Ave
San Luis Obispo, CA 93401-4535

Phone

(805) 781-4700

Fax

(805) 781-1232

NPI assigned

Jul 14, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

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 1

Specialty

Psychiatry

Education

University of Illinois College of Med (CHI/Peor/Rock/CHM-Urb), 1999

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

County of San Luis ObispoGroup PAC ID 9032020094, 10 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• French Hospital Medical Center Hospital, San Luis Obispo, CA, CCN 050232
• Marian Regional Medical Center Hospital, Santa Maria, CA, CCN 050107

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: spenepac@direct.dupagehealth.org

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.

• County of San Luis Obispo

  dba Community Mental Health Services

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Paso Robles, CA
  • NPI 1134287634
  Medicare reassignment Care Compare group NPD
• County of San Luis Obispo

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Arroyo Grande, CA
  • NPI 1932563053
  NPD
• County of San Luis Obispo Drug and Alcohol Services

  • Marriage & Family Therapist
  • San Luis Obispo, CA
  • NPI 1013115468
  NPD (past)

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

• Dignity Community Care

  dba French Hospital Medical Center

  • General Acute Care Hospital
  • San Luis Obispo, CA
  • NPI 1881760452
  Care Compare affiliation
• Dignity Health

  • General Acute Care Hospital
  • Santa Maria, CA
  • NPI 1760510937
  Care Compare affiliation

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

{
    "created_epoch": "1152835200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765238400000",
    "number": "1336165125",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2178 JOHNSON AVE",
            "city": "SAN LUIS OBISPO",
            "state": "CA",
            "postal_code": "934014535",
            "telephone_number": "805-781-4700",
            "fax_number": "805-781-1232"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2178 JOHNSON AVE",
            "city": "SAN LUIS OBISPO",
            "state": "CA",
            "postal_code": "934014535",
            "telephone_number": "805-781-4700",
            "fax_number": "805-781-1232"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1350 E Grand Ave",
            "address_purpose": "LOCATION",
            "city": "Arroyo Grande",
            "state": "CA",
            "postal_code": "934202422",
            "country_code": "US",
            "telephone_number": "805-474-2154",
            "fax_number": "805-474-2160",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PENEPACKER",
        "first_name": "STEPHEN",
        "middle_name": "T.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-14",
        "last_updated": "2025-12-09",
        "certification_date": "2025-12-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "C180768",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Dianne Pelletier
• Teresa Marie Pemberton, LMFT
• Sierra Pena, MD
• Theresa Marie Pena, RDH
• Molly Pendley
• Brian Scott Penton, M.D.
• People Persons Services LLC
• People's Self-Help Housing
• Mary Peracca, LMFT
• Jamie Pereira, LCSW

• Psychiatry Physician in San Luis Obispo, CA
• Providers in San Luis Obispo, CA by specialty
• Psychiatry Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 9, 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.

Verify at the official NPI Registry.