Individual provider Active NPI

Gerardo Reyes Guba, MD

  • Family Medicine Physician
  • Monrovia, CA
National Provider Identifier
1164402632
Registry record updated Dec 16, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
A65337 Issued in CA
Practice address
831 E Huntington Dr
Monrovia, CA 91016-3612
Phone
(626) 358-0269
NPI assigned
Jan 19, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 16, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X A65337 CA Primary

Addresses

Primary practice location

831 E Huntington Dr
Monrovia, CA 91016-3612

Mailing address

PO Box 35380
Las Vegas, NV 89133-5380
Phone (702) 579-3203

Other practice location 1

824 E Carson St
Ste 101
Carson, CA 90745
Phone (310) 233-3202

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20100825000312 CA Practitioner - Family Practice 2163546383 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
University of California, Irvine, California College of Medicine, 1996
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

1236 N Magnolia Ave
Anaheim, CA 92801-2607
Phone (714) 995-1000

450 E Huntington Dr
Arcadia, CA 91006-3748
Phone (626) 254-2100

824 E Carson St
Suite 104
Carson, CA 90745-2262
Phone (310) 830-9706

831 E Huntington Dr
Suite 101
Monrovia, CA 91016-6423
Phone (626) 358-0269

PO Box
Suite 35380
Las Vegas, NV 89133-5380

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A65337CAMDFamily Medicine Physician
65337CAMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Healthcare Partners Affiliates Medical Group CurrentSince Dec 1, 2018 Accepting new patients
Healthcare Partners Affiliates Medical Group Family Medicine CurrentSince Dec 1, 2018 Accepting new patients
Torrance Memorial Medical Center Past Accepting new patients
Memorial Medical Group Inc Past Accepting new patients

Locations

1236 N Magnolia Ave
Anaheim, CA 92801
Phone (714) 995-1000

5957 W Ramsey St
Banning, CA 92220
Phone (951) 845-8864

2910 Jefferson St
Ste 100
Carlsbad, CA 92008
Phone (760) 729-8600

824 E Carson St
Ste 101
Carson, CA 90745
Phone (310) 233-3202

824 E Carson St
Ste 104
Carson, CA 90745
Phone (310) 830-9706

831 E Huntington Dr
Monrovia, CA 91016
Phone (626) 358-0269

831 E Huntington Dr
Ste 101
Monrovia, CA 91016
Phone (626) 358-0269

601 Torrance Blvd
#1182
Redondo Beach, CA 90277

1700 N Waterman Ave
Sn Bernrdno, CA 92404
Phone (909) 883-8611

3500 Lomita Blvd
Ste 203
Torrance, CA 90505
Phone (310) 326-0210

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: gguba206244@westdirect.optum.com

Organizations & group practices 4

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 1

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": "1137628800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765843200000",
    "number": "1164402632",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35380",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891335380",
            "telephone_number": "702-579-3203"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "831 E HUNTINGTON DR",
            "city": "MONROVIA",
            "state": "CA",
            "postal_code": "910163612",
            "telephone_number": "626-358-0269"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "824 E Carson St",
            "address_2": "Ste 101",
            "address_purpose": "LOCATION",
            "city": "Carson",
            "state": "CA",
            "postal_code": "90745",
            "country_code": "US",
            "telephone_number": "310-233-3202",
            "fax_number": "310-233-3208",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GUBA",
        "first_name": "GERARDO",
        "middle_name": "REYES",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-19",
        "last_updated": "2025-12-16",
        "certification_date": "2025-12-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "A65337",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Monrovia, CA

Sources for this page

Verify at the official NPI Registry.