DR. JOHN J KOO MD
NPI 1477617561
Internal Medicine in Los Angeles, CA

Active since December 21, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
12021 WILMINGTON AVE, LOS ANGELES, CA 90059(310) 668-4574 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. John J Koo Md NPPES

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

DR. JOHN J KOO MD (NPI 1477617561) is an individual internal medicine provider in Los Angeles, California, licensed in California (A95589) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Adventist Health Castle, and is a graduate of Other (2003).

NPPES Registry Identity

NPI1477617561
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JOHN J KOOCredential: MD
Location Address12021 WILMINGTON AVELos Angeles, CA 90059-3019
Mailing Address538 S Manhattan Pl Apt 205Los Angeles, CA 90020-4487 · (213) 422-9238
Sole ProprietorNo
Medical School CMSOtherGraduated 2003
Enumeration DateDecember 21, 2006
Last NPPES UpdateJuly 8, 2007
NPI 1477617561 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in CA · A95589
Definition

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.

12021 WILMINGTON AVE, Los Angeles, CA 90059

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. John J Koo 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 ID8325141617
PECOS Enrollment IDI20070306000631
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.

Areas of Expertise CMS Part B claims 7

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
589 services210 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
242 services226 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
236 services220 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
236 services224 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
50 services17 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
19 services11 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Adventist Health Castle

Acute Care Hospitals · Kailua, HI
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number120006
Location640 Ulukahiki StKailua, HI 96734 · Honolulu County
Emergency services Birthing friendly

Kona Community Hospital

Acute Care Hospitals · Kealakekua, HI
1/5 CMS rating
OwnershipGovernment - State
CMS Certification Number120019
Location79-1019 Haukapila StreetKealakekua, HI 96750 · Hawaii County
Emergency services Birthing friendly

Straub Clinic And Hospital

Acute Care Hospitals · Honolulu, HI
4/5 CMS rating
OwnershipProprietary
CMS Certification Number120022
Location888 S King StreetHonolulu, HI 96813 · Honolulu County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90059 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality100
Improvement Activities40
Cost100

Reported Quality Measures

Advance Care Plan
100%583 patients5/55-star benchmark: 100%
Documentation of Current Medications in the Medical Record
100%682 patients5/55-star benchmark: 100%
Heart Failure (HF): Angiotensin-Converting Enzyme (ACE) Inhibitor or Angiotensin Receptor Blocker (ARB) or Angiotensin Receptor-Neprilysin Inhibitor (ARNI) Therapy for Left Ventricular Systolic Dysfunction (LVSD)
100%38 patients5/55-star benchmark: 100%
Heart Failure (HF): Beta-Blocker Therapy for Left Ventricular Systolic Dysfunction (LVSD)
100%39 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.

Other Providers at the Same Location NPPES 20

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

Otolaryngology
12021 WILMINGTON AVE, DEPT OF OTOLARYNGOLOGY
LOS ANGELES, CA 90059
Physician Assistant
12021 WILMINGTON AVE
LOS ANGELES, CA 90059
Counselor (Addiction (Substance Use Disorder))
12021 WILMINGTON AVE
LOS ANGELES, CA 90059
Day Training/Habilitation Specialist
12021 WILMINGTON AVE, BUILDING 18 SUITE 4D
LOS ANGELES, CA 90059
Internal Medicine
12021 WILMINGTON AVE
LOS ANGELES, CA 90059
Physician Assistant
12021 WILMINGTON AVE
LOS ANGELES, CA 90059
Internal Medicine
12021 WILMINGTON AVE
LOS ANGELES, CA 90059
Clinic/Center
12021 WILMINGTON AVE
LOS ANGELES, CA 90059

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 John Koo's NPI number?

The NPI number for John Koo is 1477617561. It was assigned to this individual provider in the NPPES registry on December 21, 2006.

Where is John Koo located?

John Koo practices at 12021 Wilmington Ave, Los Angeles, CA 90059. The listed phone number is (310) 668-4574.

What is John Koo's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is John Koo enrolled in Medicare?

Yes. John Koo 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.

Is John Koo affiliated with any hospitals?

According to CMS data, John Koo is affiliated with Adventist Health Castle, Kona Community Hospital and Straub Clinic And Hospital.

When was this NPI record last updated?

The NPPES record for John Koo was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.