1. Home
  2. Directory
  3. California
  4. Yorba Linda
  5. Allergy Immunology
  6. NPI Profile

HAE YOUNG AARON SONG MD
NPI 1831181569
Allergy & Immunology in Yorba Linda, CA

Active since August 18, 2005PECOS EnrolledAccepts Medicare Assignment
16960 BASTANCHURY RD STE H, YORBA LINDA, CA 92886(714) 777-8845(714) 777-8856 Get Directions Write a Review

NPPES record last updated: October 27, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Hae Young Aaron Song Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HAE YOUNG AARON SONG MD (NPI 1831181569) is an individual allergy & immunology provider in Yorba Linda, California, licensed in California (A068359) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Washington School Of Medicine (1997).

NPPES Registry Identity

NPI1831181569
Entity TypeIndividualMale
Primary Taxonomy207K00000X
Provider Legal NameHAE YOUNG AARON SONGCredential: MD
Location Address16960 BASTANCHURY RD STE HYorba Linda, CA 92886-1711
Mailing Address16960 Bastanchury Rd Ste HYorba Linda, CA 92886-1711 · (714) 777-8845 · Fax (714) 777-8856
Phone(714) 777-8845
Fax(714) 777-8856
Sole ProprietorNo
Medical School CMSUniversity Of Washington School Of MedicineGraduated 1997
Enumeration DateAugust 18, 2005
Last NPPES UpdateOctober 27, 2021
NPPES CertifiedOctober 27, 2021
✔ NPI 1831181569 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
License✔ Licensed in CA · A068359
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
16960 BASTANCHURY RD STE H, Yorba Linda, CA 92886
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Hae Young Aaron Song Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2769414994
PECOS Enrollment IDI20050908000319
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Hae Young Song reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Allergy Associates Of Orange County, Inc.
3.0 mi
Medical Specialty
19871 YORBA LINDA BLVD, SUITE 104
Yorba Linda, CA 92886
  • Reassigned Medicare billing, California enrollment
NPI 1902065220 (714) 777-8845
Faculty Physicians And Surgeons Of Llusm
8.2 mi
Pediatrics
2140 GRAND AVE, STE 120
Chino Hills, CA 91709
  • Reassigned Medicare billing, California enrollment
  • 2,584 clinicians in this Medicare group
NPI 1811205131 (909) 558-3111

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Test for allergy using allergenic extract 95004
An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.
972 services19 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
82 services44 patients
Test to measure expiratory airflow and volume 94010
This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.
62 services34 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
30 services30 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
29 services21 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
14 services14 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
100%61 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Hae Young Song's NPI number?

The NPI number for Hae Young Song is 1831181569. It was assigned to this individual provider in the NPPES registry on August 18, 2005.

Where is Hae Young Song located?

Hae Young Song practices at 16960 Bastanchury Rd Ste H, Yorba Linda, CA 92886. The listed phone number is (714) 777-8845.

What is Hae Young Song's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Hae Young Song enrolled in Medicare?

Yes. Hae Young Song is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Hae Young Song's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hae Young Song reassigns Medicare benefits to 2 organizations: Allergy Associates Of Orange County, Inc. (Yorba Linda, CA) and Faculty Physicians And Surgeons Of Llusm (Chino Hills, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Hae Young Song's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Hae Young Song was last updated on October 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.