Karthik Natarajan Thenkondar, MD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

A122951 Issued in CA

Practice address

556 S Fair Oaks Ave Ste 101
Pasadena, CA 91105-2657

Phone

(323) 600-3132

NPI assigned

Jun 3, 2010

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

Internal MedicineAlso: General Practice

Education

Other, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Lakeside Medical Organization a Medical Group IncGroup PAC ID 7618005166, 64 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Providence St Joseph Hospital Hospital, Eureka, CA, CCN 050006

Merit-based Incentive Payment System (MIPS)

Final score

80.57 of 100Reported as group

Quality

62.42

Promoting interoperability

76

Improvement activities

40

Cost

76.15

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Interoperability endpoints

• Direct secure messaging: karthik.thenkondar.p4@direct.regal.nextgenshare.com
• Direct secure messaging: kthenkondar67623@direct.whhs.com
• Direct secure messaging: karthik.thenkondar.p1@direct.lakeside.nextgenshare.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Lakeside Medical Organization, a Medical Group Inc.

  • Internal Medicine Physician
  • West Hills, CA
  • NPI 1831426642
  Medicare reassignment Care Compare group
• Karthik Consulting Corp

  • Family Medicine Physician
  • Pasadena, CA
  • NPI 1780503565
  Authorized official Same address or phone

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

• St. Joseph Health Northern California, LLC

  dba Providence Humboldt Home Infusion

  • Home Infusion Therapy Pharmacy
  • Eureka, CA
  • NPI 1568422319

  Hospital

  Care Compare affiliation
• St. Joseph Health Northern California, LLC

  dba Providence St. Joseph Hospital

  • General Acute Care Hospital
  • Eureka, CA
  • NPI 1609858950
  Care Compare affiliation
• St. Joseph Health Northern California, LLC

  dba Providence St. Joseph Hospital

  • General Acute Care Hospital
  • Eureka, CA
  • NPI 1891900635
  Care Compare affiliation

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

{
    "created_epoch": "1275523200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783382400000",
    "number": "1972823672",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2700 DOLBEER ST",
            "city": "EUREKA",
            "state": "CA",
            "postal_code": "955014736",
            "telephone_number": "707-445-8121"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "556 S FAIR OAKS AVE STE 101",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911052657",
            "telephone_number": "323-600-3132"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THENKONDAR",
        "first_name": "KARTHIK",
        "middle_name": "NATARAJAN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2010-06-03",
        "last_updated": "2026-07-07",
        "certification_date": "2026-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "A122951",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• The Integrative Depth Psychology Institute, Inc.
• The Jones Psychology Group, Inc.
• The Leela Integrative Medicine Center, Inc
• The Sensory Brain
• Jennifer Thelen
• Andreea Theodore
• Deirdre Terese Theriault, RN
• Ernendy Thermidor
• Nicole Denise Thibeau, PHARMD
• Thirdgenrx Inc (Brown & Welin Pharmacy)

• Family Medicine Physician in Pasadena, CA
• Providers in Pasadena, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 7, 2026; 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.