NPIMap

Individual provider Active NPI

William Chunghun Sim, MD

  • Internal Medicine Physician
  • Downey, CA
National Provider Identifier
1437256906
Registry record updated Dec 20, 2011
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
G72353 Issued in CA
Practice address
11480 Brookshire Ave
200
Downey, CA 90241-9998
Phone
(562) 806-0874
Fax
(562) 927-4801
NPI assigned
Sep 19, 2006
Last updated
Dec 20, 2011By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 20, 2011

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X G72353 CA Primary

Addresses

Primary practice location

11480 Brookshire Ave
200
Downey, CA 90241-9998

Mailing address

11480 Brookshire Ave
200
Downey, CA 90241-9998
Phone (562) 806-0874

Other identifiers 1

IdentifierTypeStateIssuer
00G723520MedicaidCA

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
I20100311000876 CA Practitioner - Internal Medicine 5698800910 Reassigns benefits to 1 organization
Practice locations: Monrovia, CA; Los Angeles, CA; Long Beach, CA; Glendale, CA; Fullerton, CA; Anaheim, CA

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Stanford University School of Medicine, 1990
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Frischer Medical Group IncGroup PAC ID 8628016532, 4 clinicians

Practice addresses (Care Compare)

11480 Brookshire Ave
Suite 200
Downey, CA 90241-5021
Phone (562) 806-0874

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
75 of 100Reported as individual

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
William C Sim MD Internal Medicine CurrentSince Dec 15, 2024 Accepting new patients
Frischer Medical Group Inc Internal Medicine CurrentSince Jan 16, 1997 Accepting new patients
Elim Healthcare, Inc Past Accepting new patients
Elim Silvertown, Inc. PastSince May 26, 2024 Accepting new patients

Locations

11480 Brookshire Ave
Ste 200
Downey, CA 90241
Phone (562) 528-9792

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: williamsim@fmgrp.allscriptsdirect.net

Ownership & related parties

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

FacilityTypeRoleSince
Artemis Hospice and Palliative CareLos Angeles, CA, CCN B31643 Hospice Contracted Managing Employee Feb 10, 2025

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 13

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

View all 13

NPI Registry JSON

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

{
    "created_epoch": "1158624000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1324339200000",
    "number": "1437256906",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11480 BROOKSHIRE AVE",
            "address_2": "200",
            "city": "DOWNEY",
            "state": "CA",
            "postal_code": "902419998",
            "telephone_number": "562-806-0874",
            "fax_number": "562-927-4801"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11480 BROOKSHIRE AVE",
            "address_2": "200",
            "city": "DOWNEY",
            "state": "CA",
            "postal_code": "902419998",
            "telephone_number": "562-806-0874",
            "fax_number": "562-927-4801"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIM",
        "first_name": "WILLIAM",
        "middle_name": "CHUNGHUN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-09-19",
        "last_updated": "2011-12-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G72353",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G723520",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Downey, CA

Sources for this page

Verify at the official NPI Registry.