HUIMAHN ALEX CHOI (MD) – Neurocritical Care Physician, NPI 1841443108
Neurocritical Care Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,738 NEUROLOGY in TX
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Provider Addresses for HUIMAHN ALEX CHOI (MD)
Fannin Street, Texas Medical Center, Houston, Harris County, Texas, 77030, United States
HOUSTON, TX 77030
Phone: (713) 486-8000
Fax: (713) 486-8088
Type: Location
Memorial Hermann Medical Plaza, 6400, Fannin Street, Texas Medical Center, Houston, Harris County, Texas, 77030, United States
STE. 2070
HOUSTON, TX 770301521
Phone: (713) 486-8000
Fax: (713) 395-8115
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $271.
Total Amount is formed as General ($271) + Research ($0) + Ownership ($0) = $271.
Last reported payment date: 2024-10-16 • Largest payer in this snapshot: UCB, Inc. ($159).
Total Amount
$271
General + Research + Ownership
Payments
4
Total payment records
General Amount
$271
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| UCB, Inc. | $159 |
| Integra LifeSciences Corporation | $71 |
| Potrero Medical, Inc. | $40 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2012-08-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20120807000618 | I | Neurology | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99291 | Critical care, first 30-74 minutes | 225 | 87 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 121 | 76 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 42 | 27 | $0 |
| 99292 | Critical care, each additional 30 minutes | 23 | 15 | $0 |
| 99238 | Hospital discharge day management, 30 minutes or less | 19 | 19 | $0 |
Insurance plans in this area (ZIP 77030)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CRITICAL CARE (INTENSIVISTS) | TX | 36556 | Insertion of central venous catheter for infusion, patient 5 years or older | 17 | 17 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Neurosurgery, Neurology | TX | |
| N E U R O L O G Y | TX | |
| - | TX | |
| O P H T H A L M O L O G Y | MD | |
| O P T O M E T R Y | TX | |
| Clinical Psychologist | TX | |
| Nurse Practitioner | TX | |
| Neurology, Sleep Medicine | TX | |
| O P H T H A L M O L O G Y | MD | |
| O P T O M E T R Y | TX |
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