Tien H. Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Tien H. Nguyen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)637 services
2. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)175 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)144 services
4. Ultrasonic guidance for blood vessel access (76937)84 services
5. Injection, midazolam hydrochloride, per 1 mg (J2250)83 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Diabetes68%
• Chronic kidney disease53%
• Arthritis52%
• Ischemic heart disease52%

Hospitals where Tien H. Nguyen works

Medicare's Facility Affiliation Data lists Tien H. Nguyen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Adventist Health BakersfieldBakersfield, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050455
• Bakersfield Memorial HospitalBakersfield, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050036
• Mercy HospitalBakersfield, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050295

Practice locations

Addresses where Tien H. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).

• 4901 Centennial Plaza WayBakersfield, CA 93312 (661) 387‑8333

Group practices

Medicare enrollment lists Tien H. Nguyen as a member of this group (CMS data updated October 2, 2026).

• Hao D Bui MD Inc5 clinicians in the group

Specialties

• Vascular Surgeryprimary
• General Surgeryalso

Find other Vascular Surgery doctors in California →

Other vascular surgeons in Bakersfield

Clinicians with the same Medicare primary specialty in Bakersfield, CA — not a recommendation.

• Amit R. Shah, MD
• Ghassan Abu-Hamad, MD
• Venkat R. Yalamanchili, MD
• Yazen H. Qumsiyeh, MD
• Hao D. Bui, MD
• Allan L. Capote, MD
• Sara Honari, MD
• Pejman Rohani, DO

All vascular surgeons in Bakersfield →

Other clinicians in Hao D Bui MD Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Yazen H. Qumsiyeh, MD
• Hao D. Bui, MD
• Allan L. Capote, MD
• Sara Honari, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians