NPIMap

Individual provider Active NPI

Ryan Mayer, M.D.

  • Orthopaedic Trauma Physician
  • Pomona, CA
National Provider Identifier
1255793527
Registry record updated Aug 6, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Trauma PhysicianTaxonomy code 207XX0801X
License
A178874 Issued in CA
Practice address
160 E Artesia St Ste 255
Pomona, CA 91767-2921
Phone
(095) 964-3469
Fax
(095) 964-3449
NPI assigned
Mar 24, 2016
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 6, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Trauma Physician 207XX0801X A178874 CA Primary

Addresses

Primary practice location

160 E Artesia St Ste 255
Pomona, CA 91767-2921

Mailing address

160 E Artesia St Ste 255
Pomona, CA 91767-2921
Phone (095) 964-3469

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20220727002624 CA Practitioner - Orthopedic Surgery 4587936190 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
University of California, Irvine, California College of Medicine, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

160 E Artesia St
Suite 255
Pomona, CA 91767-2921
Phone (909) 596-4346

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
89.24 of 100Reported as group
Quality
62.82
Improvement activities
40
Cost
83.93

Procedures performed for Medicare patients

ProcedureNumber of procedures
Coronary artery bypass graft (CABG)1-10
Removal of tissue11

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Premier Orthopaedic Trauma Specialists, PMC Orthopaedic Surgery Current Accepting new patients
Sports Medicine and Orthopaedic Institute Orthopaedic Surgery CurrentSince Sep 1, 2022 Accepting new patients
Upland Outpatient Surgery Center LP CurrentSince Sep 1, 2022 Accepting new patients
San Antonio Regional Hospital Past Accepting new patients
Pomona Valley Hospital Medical Center Past Accepting new patients
Yong Luke Lee Medical Corporation Past Accepting new patients

Locations

2140 Grand Ave
Ste 120
Chino Hills, CA 91709
Phone (909) 392-2002

5000 San Bernardino St
Montclair, CA 91763
Phone (909) 625-4111

160 E Artesia St
Ste 255
Pomona, CA 91767
Phone (909) 620-0900

4445 Magnolia Ave
Riverside, CA 92501
Phone (800) 498-7156

400 N Mountain Ave
Ste 100
Upland, CA 91786

999 San Bernardino Rd
Upland, CA 91786
Phone (909) 920-4841

600 N Euclid Ave
Ste 202
Upland, CA 91786
Phone (840) 237-3344

400 N Mountain Ave
Ste 310
Upland, CA 91786
Phone (909) 920-0876

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: ryan.mayer.1@20474.direct.athenahealth.com
  • Direct secure messaging: rmayer20815@ukhcdirect.org

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 5

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": "1458777600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754438400000",
    "number": "1255793527",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "160 E ARTESIA ST STE 255",
            "city": "POMONA",
            "state": "CA",
            "postal_code": "917672921",
            "telephone_number": "095-964-3469",
            "fax_number": "909-596-4344"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "160 E ARTESIA ST STE 255",
            "city": "POMONA",
            "state": "CA",
            "postal_code": "917672921",
            "telephone_number": "095-964-3469",
            "fax_number": "095-964-3449"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAYER",
        "first_name": "RYAN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-03-24",
        "last_updated": "2025-08-06",
        "certification_date": "2025-08-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207XX0801X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Orthopaedic Trauma",
            "state": "CA",
            "license": "A178874",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Pomona, CA

Sources for this page

Verify at the official NPI Registry.