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HICHANG J CHOI MD
NPI 1245308238
Internal Medicine in Los Alamitos, CA

Active since November 30, 2006PECOS EnrolledCLIA 05D0937104 · Microscopy
4336 KATELLA AVE, LOS ALAMITOS, CA 90720(562) 799-6000(562) 799-6001 Get Directions Write a Review

NPPES record last updated: September 16, 2010. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Hichang J Choi Md NPPES

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

HICHANG J CHOI MD (NPI 1245308238) is an individual internal medicine provider in Los Alamitos, California, licensed in California (A75490) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, holds a CLIA Microscopy certificate valid through April 24, 2028, and is a graduate of Other (1999).

NPPES Registry Identity

NPI1245308238
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameHICHANG J CHOICredential: MD
Location Address4336 KATELLA AVELos Alamitos, CA 90720-3564
Mailing Address4336 Katella AveLos Alamitos, CA 90720-3564 · (562) 799-6000 · Fax (562) 799-6001
Phone(562) 799-6000
Fax(562) 799-6001
Sole ProprietorYes
Medical School CMSOtherGraduated 1999
Enumeration DateNovember 30, 2006
Last NPPES UpdateSeptember 16, 2010
✔ NPI 1245308238 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 · A75490
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.
4336 KATELLA AVE, Los Alamitos, CA 90720
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Other Identifiers 3

Medicare PINW19291CA
Medicare UPINH68210
Medicaid00A754900CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Hichang J Choi Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7719904531
PECOS Enrollment IDI20051101000202
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.

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 for Provider-Performed Microscopy Procedures (PPMP) 05D0937104

Hi Chang Choi, MD Inc · Los Alamitos, CA
Active · expires Apr 24, 2028
CLIA Number05D0937104
Laboratory TypeCommunity Clinic
Certificate Effective DateApril 25, 2026
Certificate Expiration DateApril 24, 2028
Laboratory DirectorHi Chang J. Choi, MD
Laboratory Phone(562) 799-6000
Laboratory LocationHi Chang Choi, MD Inc3801 Katella Ave Ste 207, Los Alamitos, CA 90720
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Areas of Expertise CMS Part B claims 4

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.
137 services61 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
92 services58 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.
73 services54 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
52 services35 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90720 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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
7 suppliers23 claims38 services$4.17 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
6 suppliers11 claims11 services$0.82 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

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

KIND HEART HOSPICE
Hospice Care, Community Based
4336 KATELLA AVE
LOS ALAMITOS, CA 90720
Orange County (562) 883-2945

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 Hichang Choi's NPI number?

The NPI number for Hichang Choi is 1245308238. It was assigned to this individual provider in the NPPES registry on November 30, 2006.

Where is Hichang Choi located?

Hichang Choi practices at 4336 Katella Ave, Los Alamitos, CA 90720. The listed phone number is (562) 799-6000.

What is Hichang Choi's specialty?

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

Is Hichang Choi enrolled in Medicare?

Yes. Hichang Choi is registered in the Medicare PECOS enrollment system.

Does Hichang Choi hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D0937104) is associated with this NPI, valid through April 24, 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 Hichang Choi was last updated on September 16, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.