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ESTHER YOUNG YOON M.D.
NPI 1174725683
Family Medicine in Glendale, CA

Active since June 05, 2007PECOS EnrolledAccepts Medicare AssignmentCLIA 05D2337154 · Waiver
1901 BROADVIEW DR, GLENDALE, CA 91208(818) 246-3306(818) 246-3333 Get Directions Write a Review

NPPES record last updated: January 28, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 28, 2021, Oct 24, 2019 (2 updates tracked since 2019).

About Esther Young Yoon M.d. NPPES

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

ESTHER YOUNG YOON M.D. (NPI 1174725683) is an individual family medicine provider in Glendale, California, licensed in California (A99299) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through January 15, 2028, and is a graduate of University Of Southern California Keck School Of Medicine (2005).

NPPES Registry Identity

NPI1174725683
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameESTHER YOUNG YOONCredential: M.D.
Location Address1901 BROADVIEW DRGlendale, CA 91208-1201
Mailing Address1901 Broadview DrGlendale, CA 91208-1201 · (818) 246-3306 · Fax (818) 246-3333
Phone(818) 246-3306
Fax(818) 246-3333
Sole ProprietorYes
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2005
Enumeration DateJune 5, 2007
Last NPPES UpdateJanuary 28, 20212 updates tracked since enumeration
NPPES CertifiedJanuary 28, 2021
✔ NPI 1174725683 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A99299
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1901 BROADVIEW DR, Glendale, CA 91208
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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

Esther Young Yoon M.d. 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 ID2062504434
PECOS Enrollment IDI20070815000758
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 Esther Yoon reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Esther Yoon MD, Inc
Same address
Family Medicine
1901 BROADVIEW DR
Glendale, CA 91208
  • Reassigned Medicare billing, California enrollment
NPI 1104182856 (818) 246-3306
Comcare Primary Medical Group A California General Partnership
5.0 mi
Family Medicine
333 E MAGNOLIA BLVD STE 103
Burbank, CA 91502
  • Reassigned Medicare billing, California enrollment
  • 15 clinicians in this Medicare group
NPI 1578901237 (818) 279-3562

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2337154

Esther Yoon MD, Inc · Glendale, CA
Active · expires Jan 15, 2028
CLIA Number05D2337154
Laboratory TypePhysician Office
Certificate Effective DateJanuary 16, 2026
Certificate Expiration DateJanuary 15, 2028
Laboratory DirectorYoon Esther
Laboratory Phone(818) 246-3306
Laboratory LocationEsther Yoon MD, Inc1901 Broadview Dr, Glendale, CA 91208
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 10

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.

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.
176 services114 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.
165 services94 patients
Annual alcohol misuse screening, 5 to 15 minutes G0442
An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.
105 services105 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
100 services100 patients
Annual depression screening, 5 to 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
98 services98 patients
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490
Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.
36 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91208 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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

Diabetes: Medical Attention for Nephropathy
The percentage of patients 18-75 years of age with diabetes who had a nephropathy screening test or evidence of nephropathy during the measurement period
91%55 patients4/55-star benchmark: 99%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
60%2,262 patients1/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
66%741 patients3/55-star benchmark: 97%
Preventive Care and Screening: Influenza Immunization
Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization
31%454 patients2/55-star benchmark: 88%
Preventive Care and Screening: Screening for Depression and Follow-Up Plan
Percentage of patients aged 12 years and older screened for depression on the date of the encounter using an age appropriate standardized depression screening tool AND if positive, a follow-up plan is documented on the date of the positive screen
76%725 patients4/55-star benchmark: 96%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients screenedForUse: 93% · 701 patients
Patients tobacco: 93% · 701 patients
90%40 patients4/55-star benchmark: 98%
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.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SIXTH OPTOMETRIC CARE OF CALIFORNIA PC
Optometrist
1901 BROADVIEW DR
GLENDALE, CA 91208
Los Angeles County (818) 369-7787
DR. DAVID S HAN M.D.
Family Medicine
1901 BROADVIEW DR
GLENDALE, CA 91208
Los Angeles County (818) 246-3306
ESTHER YOON MD, INC
Family Medicine
1901 BROADVIEW DR
GLENDALE, CA 91208
Los Angeles County (818) 246-3306
NANE GHAZARYAN
Optometrist
1901 BROADVIEW DR
GLENDALE, CA 91208
Los Angeles County (818) 369-7787

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 Esther Yoon's NPI number?

The NPI number for Esther Yoon is 1174725683. It was assigned to this individual provider in the NPPES registry on June 5, 2007.

Where is Esther Yoon located?

Esther Yoon practices at 1901 Broadview Dr, Glendale, CA 91208. The listed phone number is (818) 246-3306.

What is Esther Yoon's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Esther Yoon enrolled in Medicare?

Yes. Esther Yoon 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 Esther Yoon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Esther Yoon reassigns Medicare benefits to 2 organizations: Esther Yoon MD, Inc (Glendale, CA) and Comcare Primary Medical Group A California General Partnership (Burbank, 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 Esther Yoon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Does Esther Yoon hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2337154) is associated with this NPI, valid through January 15, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Esther Yoon was last updated on January 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.