HUIMAHN ALEX CHOI MD
NPI 1841443108
Psychiatry & Neurology - Neurocritical Care in Houston, TX

Active since October 30, 2008PECOS EnrolledAccepts Medicare Assignment
6400 FANNIN ST., STE 2800, HOUSTON, TX 77030(713) 486-8000(713) 486-8088 Get Directions Write a Review

NPPES record last updated: January 23, 2020. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 23, 2020, Sep 7, 2018, Aug 10, 2018 (3 updates tracked since 2018).

About Huimahn Alex Choi Md NPPES

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

HUIMAHN ALEX CHOI MD (NPI 1841443108) is an individual neurocritical care provider in Houston, Texas, licensed in Texas (P2838) and active in the NPI registry since October 2008. He is enrolled in Medicare PECOS, is affiliated with Memorial Hermann - Texas Medical Center, and is a graduate of Columbia University College Of Physicians And Surgeons (2005).

NPPES Registry Identity

NPI1841443108
Entity TypeIndividualMale
Primary Taxonomy2084A2900X
Provider Legal NameHUIMAHN ALEX CHOICredential: MD
Location Address6400 FANNIN ST., STE 2800Houston, TX 77030
Mailing Address6400 Fannin St, Ste. 2070Houston, TX 77030-1521 · (713) 486-8000 · Fax (713) 395-8115
Fax(713) 486-8088
Sole ProprietorNo
Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 2005
Enumeration DateOctober 30, 2008
Last NPPES UpdateJanuary 23, 20203 updates tracked since enumeration
NPI 1841443108 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPsychiatry & Neurology · Neurocritical CareAllopathic & Osteopathic Physicians
Taxonomy Code2084A2900X
License Licensed in TX · P2838
Definition
The medical subspecialty of Neurocritical Care is devoted to the comprehensive, multisystem care of the critically-ill neurological patient. Like other intensivists, the neurointensivist generally assumes the primary role for coordinating the care of his or her patients in the ICU, both the neurological and medical management of the patient. They may also provide consultative services for these patients as requested within the health system.
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License P2838 (TX)
6400 FANNIN ST., STE 2800, Houston, TX 77030

Accepted Insurance

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

Huimahn Alex Choi 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 ID8820121957
PECOS Enrollment IDI20120807000618
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 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.

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.
344 services116 patients
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.
192 services98 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.
34 services34 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
23 services20 patients
Ultrasonic guidance for blood vessel access 76937
Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.
22 services19 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.
17 services13 patients

Hospital Affiliations CMS Care Compare 4

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

Memorial Hermann - Texas Medical Center

Acute Care Hospitals · Houston, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450068
Location6411 FanninHouston, TX 77030 · Harris County
Emergency services Birthing friendly

Memorial Hermann Hospital System

Acute Care Hospitals · Houston, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450184
Location1635 North Loop WestHouston, TX 77008 · Harris County
Emergency services Birthing friendly

Baptist Beaumont Hospital

Acute Care Hospitals · Beaumont, TX
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450346
Location3080 College StreetBeaumont, TX 77701 · Jefferson County
Emergency services Birthing friendly

Memorial Hermann Memorial City Hospital

Acute Care Hospitals · Houston, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450610
Location921 GessnerHouston, TX 77024 · Harris County
Emergency services Birthing friendly

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.

Clinical Neuropsychologist
6400 FANNIN ST., STE 2800
HOUSTON, TX 77030
Physician Assistant
6400 FANNIN ST., STE 2800
HOUSTON, TX 77030
Psychiatry & Neurology (Neurocritical Care)
6400 FANNIN ST., STE 2800
HOUSTON, TX 77030
Nurse Practitioner (Acute Care)
6400 FANNIN ST., STE 2800
HOUSTON, TX 77030
Physician Assistant
6400 FANNIN ST., STE 2800
HOUSTON, TX 77030
Psychiatry & Neurology (Neurology)
6400 FANNIN ST., STE 2800
HOUSTON, TX 77030
Registered Nurse (Neuroscience)
6400 FANNIN ST., STE 2800
HOUSTON, TX 77030
Nurse Practitioner (Acute Care)
6400 FANNIN ST., STE 2800
HOUSTON, TX 77030

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 Huimahn Choi's NPI number?

The NPI number for Huimahn Choi is 1841443108. It was assigned to this individual provider in the NPPES registry on October 30, 2008.

Where is Huimahn Choi located?

Huimahn Choi practices at 6400 Fannin St., Ste 2800, Houston, TX 77030. The listed phone number is (713) 486-8000.

What is Huimahn Choi's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurocritical Care, with taxonomy code 2084A2900X.

Is Huimahn Choi enrolled in Medicare?

Yes. Huimahn Choi 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.

What insurance does Huimahn Choi accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list Huimahn Choi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Huimahn Choi affiliated with any hospitals?

According to CMS data, Huimahn Choi is affiliated with Memorial Hermann - Texas Medical Center, Memorial Hermann Hospital System, Baptist Beaumont Hospital and Memorial Hermann Memorial City Hospital.

When was this NPI record last updated?

The NPPES record for Huimahn Choi was last updated on January 23, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.