SANG HOON AHN M.D. – NPI #1568581759
Internal Medicine

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Health Care Provider Taxonomy Code for Internal Medicine

SANG HOON AHN is a physician located in FULLERTON, CA. NPPES has assigned the NPI number 1568581759 to SANG HOON AHN on March 28, 2007. It is a Type-1 NPI, indicating this NPI number is associated with an individual. According to the NPI data, there are 2 additional location(s) assigned to this provider which are listed below. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207R00000X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine.

The NPI profile was last updated on Feb 18, 2026. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for SANG HOON AHN below.

NPI Profile for
SANG HOON AHN

NPI Number
1568581759
Enumeration Date

(more than 19 years ago)
Entity Type
Type-1  Individual (Male)
Legal Name
SANG HOON AHN
Credentials
M.D.
Primary location
1950 SUNNY CREST DR STE 2800
FULLERTON, CA 92835-3641
Phone: (657) 888-9919 Fax: (657) 888-9941
2 Other location(s):
5832 Beach Blvd Unit 201
Buena Park, CA 90621-5501
Phone: (714) 522-0908
Fax: (714) 522-0919
500 S Virgil Ave
SUITE 502
Los Angeles, CA 90020-1446
Phone: (213) 388-0908
Fax: (213) 388-0919
Mailing address
1520 HOLLYDALE DR
FULLERTON, CA 92831-1115
Phone: (213) 245-0788 Fax:
Sole Proprietor
Yes
Updated
Certification Date
Feb 18, 2026

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Identifiers

Identifiers for SANG HOON AHN

Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.

DescriptionIssuerStateIdentifier
medicaidCA00A955620
Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207R00000X
- Internal Medicine (Primary)		 CA A95562
207RX0202X
- Internal Medicine / Medical Oncology		 CA A95562

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.

Endpoint

Health Information Exchange (HEI)

HEI is the mobilization of health care information electronically across organizations within a region, community or hospital system. Endpoints provide a simple and secure way for participants to send authenticated, encrypted health information directly to known, trusted recipients over the internet such as primary care physicians, specialists, hospitals, labs, etc.

Endpoint
[email protected]
Endpoint type
Direct Messaging Address
Endpoint Description
Content Type
CSV
Affiliation
Y
Endpoint Location
500 S VIRGIL AVE,
LOS ANGELES, CA 77025-1669

Additional Information

Offers Telehealth Services
Yes - Telehealth services allows you to talk to your health care provider using audio/video communications, such as Zoom, without actually going in to the doctor's office
Accepts Medicare
This provider accepts Medicare-approved amount as payment in full. The Medicare-approved amount is the total the provider can be paid. When a provider accepts the Medicare-approved amount as payment, you won't be billed for more than the Medicare deductible & coinsureance.
Medicare Ordering & Referring
Provider can:
  • Refer to Part B
  • Order Durable Medical Equipment
  • Refer to Home Health Agency
  • Order Power Mobility Devices
Affiliations
SANG HOON AHN is affiliated with the following medical group(s):
  • HOSPITAL
    • HOLLYWOOD PRESBYTERIAN MEDICAL CENTER
      1300 N VERMONT AVE
      LOS ANGELES, CA 90027
    • KECK HOSPITAL OF USC
      1500 SAN PABLO STREET
      LOS ANGELES, CA 90033
  • HOME HEALTH AGENCY
    • WESTERN HOME CARE, INC
      6131 ORANGETHORPE AVENUE, SUITE 360
      BUENA PARK, CA 90620

Why is my NPI data (personal information) being displayed publicly?
If you have an active NPI profile, your profile is required to be disclosed according to the FOIA and eFOIA. HIPAA also requires covered providers to share their NPI with other providers, health plans, clearinghouses and any entity that may need it for billing purposes.

How do I correct or change the NPI data displayed here?
At any time, providers can make changes to their NPI profile at NPPES. Login to NPPES to make changes online or call (800) 465-3203 for assistance. Changes made at NPPES will be reflected on this web site within a few days.

Can I hide my NPI profile from the public?
Unfortunately, No. The NPPES discloses health care provider data under the Freedom of Information Act to the public, which means anyone may request such information directly from the National Plan & Provider Enumeration System. See the complete CMS Data Dissemination Notice here.