Carlos Humberto Mazariegos Letran, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

125.077178 Issued in IL

Practice address

2615 Chester Ave
Bakersfield, CA 93301-2014

Phone

(661) 395-3000

NPI assigned

May 20, 2020

Last updated

Nov 25, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

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 Medicine

Education

Other, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Galen Inpatient Physicians PCGroup PAC ID 3678464633, 1,045 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Adventist Health Bakersfield Hospital, Bakersfield, CA, CCN 050455
• Adventist Health Delano Hospital, Delano, CA, CCN 050608
• Adventist Health Tehachapi Valley Hospital, Tehachapi, CA, CCN 051301

Merit-based Incentive Payment System (MIPS)

Final score

82.4 of 100Reported as group

Quality

65.6

Improvement activities

40

Cost

71.06

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: cmazariegosletran126048@direct.luhs.org

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.

• Galen Inpatient Physicians, PC

  • Hospitalist Physician
  • Manteca, CA
  • NPI 1689320459
  Medicare reassignment Care Compare group NPD
• Hospitalist Medicine Physicians of California, Inc

  • Internal Medicine Physician
  • Apple Valley, CA
  • NPI 1184663965
  Medicare reassignment NPD
• Galen Inpatient Physicians PC

  • Hospitalist Physician
  • Los Angeles, CA
  • NPI 1205787686
  NPD
• Loyola University Medical Center

  dba Foster G. McGaw Hospital

  • General Acute Care Hospital
  • Maywood, IL
  • NPI 1376521575
  NPD
• Sports Medicine Grant, Inc

  dba Sports Medicine Grant & Orthopaedic Associates

  • Orthopaedic Surgery Physician
  • Columbus, OH
  • NPI 1588649842
  NPD (past)

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

• Adventist Health Delano

  dba Delano Regional Medical Center

  • General Acute Care Hospital
  • Delano, CA
  • NPI 1144237272
  Care Compare affiliation
• Adventist Health Medical Center Tehachapi

  dba Adventist Health Medical Center Tehachapi Valley

  • Critical Access Hospital
  • Tehachapi, CA
  • NPI 1275538530
  Care Compare affiliation
• San Joaquin Community Hospital

  • General Acute Care Hospital
  • Bakersfield, CA
  • NPI 1538157508
  Care Compare affiliation

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

{
    "created_epoch": "1589932800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764028800000",
    "number": "1477176899",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2615 CHESTER AVE",
            "city": "BAKERSFIELD",
            "state": "CA",
            "postal_code": "933012014",
            "telephone_number": "661-395-3000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2615 CHESTER AVE",
            "city": "BAKERSFIELD",
            "state": "CA",
            "postal_code": "933012014",
            "telephone_number": "661-395-3000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAZARIEGOS LETRAN",
        "first_name": "CARLOS",
        "middle_name": "HUMBERTO",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-05-20",
        "last_updated": "2025-11-25",
        "certification_date": "2025-11-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CA",
            "license": "A187387",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "125.077178",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ashley Mayorga
• Mayowa Olugbami (Pine Medical Transportation)
• Kristin Maytubby, PSY.D., LCSW
• Nichol Arline Maytubby, DPT
• Summer Rae Mazantini
• Bongani Peter Mazibuko
• Rosemary W Mazur
• Mazzeo Medical Corporation
• Armi Lynn Mazzeo, M.D.
• Joseph Jacob Mazzullo, PMHNP

• Internal Medicine Physician in Bakersfield, CA
• Providers in Bakersfield, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 25, 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.