Physician Profile
Thien A. Nguyen, M.D.
Unclaimed ProfileAbout Dr. Nguyen
Thien A. Nguyen, M.D. is a healthcare provider in Katy, TX specializing in critical care medicine. Thien is also listed as specializing in internal medicine and pulmonary disease. Medicare claims data shows Thien provided 656 services to 230 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, and critical care, first 30-74 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (281) 703-3020
- Email not available
Practice Locations
PO BOX 475
Katy, TX 77492
1401 St Joseph Pkwy
Houston, TX 77002
600 Elizabeth St
Corpus Christi, TX 78404
Conditions Commonly Evaluated or Treated
Within Critical Care Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Blood & metabolism
- Dangerous electrolyte imbalance
Brain & nerve
- Hemorrhagic stroke
- Ruptured Brain Aneurysm
- Spinal Cord Injury
- Sudden Muscle Weakness Crisis
Brain & Nervous System
- Brain Swelling
- Fainting and syncope
- ICU Delirium and Confusion
- Ischemic stroke
- Status epilepticus
- Traumatic brain injury
Breathing & Lungs
- Collapsed lung
- Respiratory failure
- Severe asthma attack
- Severe Blood Clot in Lung
- Severe Pneumonia
Digestive emergencies
- Severe internal bleeding
Environmental emergencies
- Heat stroke
- Smoke Inhalation
Heart & Circulation
- Cardiac Arrest
- Shock
- Torn Aorta
Heart & vascular
- Dangerous high blood pressure
- Sudden Heart Muscle Weakness
Infection & Sepsis
- Sepsis or blood infection
- Severe Allergic Shock
Infections
- Flesh-Eating Infection
- Meningitis
Injury & trauma
- Broken ribs
- Serious car crash injuries in child
Lung & breathing
- Critical COVID Complications
- Fluid in the Lungs
Medication reactions
- Severe Skin Peeling Reaction
Metabolic Emergencies
- Dangerous high blood sugar
- High Acid in Blood
Muscle & kidney
- Crush Injury
Organ Failure
- Acute kidney injury
- Multiple Organ Failure
- Severe Pancreatitis
- Sudden Liver Failure
Pregnancy emergencies
- Seizures During Pregnancy
Recovery
- Post-ICU Weakness
Substance emergencies
- Alcohol withdrawal
Toxicity & Trauma
- Drug overdose or poisoning
- Hypothermia and frostbite
- Severe Burns
Procedures & services
Airway & Breathing
- Airway Scope and Suctioning
- Breathing machine management
- Chest tube insertion
- Emergency intubation
- Tracheostomy
Airway procedures
- Emergency surgical airway
Brain procedures
- Skull Bone Removal For Pressure Relief
Breathing support
- BiPAP therapy
- Breathing tube removal
- Inhaled Nitric Oxide Therapy
- Oxygen therapy
Consultation & Recovery
- Family ICU Consultation and Goals of Care
- Post-ICU Recovery Care
Digestive procedures
- Urgent upper endoscopy
Emergency surgery
- Emergency Chest Opening for Trauma
Fluid Drainage
- Draining lung fluid
- Paracentesis
Heart procedures
- Heart Fluid Drainage (Pericardiocentesis)
Heart support
- Intra-aortic balloon pump placement
ICU recovery
- Bedsore and Wound Dressing
- Early ICU Physical Rehab
Lab tests & monitoring
- Blood Gas Testing
Life Support
- Cardioversion for rapid heartbeat
- CPR and defibrillation
- ECMO (Heart-Lung Machine)
- Stomach Positioning for Lung Failure
- Targeted Body Cooling
- Temporary Pacemaker Placement
- Ventilator Support
Medication therapies
- Emergency Clot-Busting Medication
Medications & Infusions
- Emergency Blood Transfusion
- ICU Sedation and Pain Relief
- IV Blood Pressure Support (Pressors)
Monitoring
- Bladder and Belly Pressure Check
- Brain Blood Flow Ultrasound
- Brain Pressure Monitor Placement
- Continuous Brain Wave Monitoring
- Emergency ultrasound
- Heart Pressure Catheter Monitoring
- Lumbar puncture
Nutrition & Digestion
- Feeding tube placement
Nutrition support
- IV Nutrition For Preemies
Organ Support
- Continuous Dialysis in the ICU
- Plasmapheresis
Vascular Access
- Arterial catheter placement
- Central line placement
Procedures Most Often Billed to Medicare
656 services · 230 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
235 | More often than most peers in Critical Care Medicine |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
204 | More often than most peers in Critical Care Medicine |
| Critical care, first 30-74 minutes | Office visit | 99291 |
156 | As often as other peers in Critical Care Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
30 | Less often than most peers in Critical Care Medicine |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
17 | Less often than most peers in Critical Care Medicine |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
14 | Less often than most peers in Critical Care Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other critical care physicians in Katy 2
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2010 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Thien A. Nguyen specialize in?
Thien A. Nguyen is a critical care physician in Katy, TX. That is the designation recorded for this NPI in the federal registry, where it is listed as “Critical Care Medicine”.
NPI registry
Where is Thien A. Nguyen located?
Thien A. Nguyen is listed at Po Box 475, Katy, TX 77492. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Thien A. Nguyen's phone number?
The number on file is (281) 703-3020. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Thien A. Nguyen?
Thien A. Nguyen's National Provider Identifier is 1477872505. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Thien A. Nguyen train?
Thien A. Nguyen attended Other, graduating in 2010. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Thien A. Nguyen have?
Thien A. Nguyen has 16 years experience. Calculated from a graduation year of 2010, reported in the CMS National Downloadable File.
CMS public data
What does Thien A. Nguyen do most often?
According to Medicare billing data, Thien A. Nguyen the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Thien A. Nguyen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Thien A. Nguyen. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.