Hong Loan Nguyen, M.D.
NPI 1538696224 · Internal Medicine Physician · Houston, TX
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hong Loan Nguyen, M.D. is a Internal Medicine Physician provider in Houston, TX (NPI 1538696224).
Provider details
- NPI number
- 1538696224
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- S4031 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
46 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 46 | $119 |
Typical Medicare-allowed amounts for these services range $119–$119 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 6624 Fannin St Fl 19Houston, TX 77030-2312Phone: (713) 442-0000
Registry dates
- Enumerated
- 2017-05-12
- Last updated
- 2026-05-12
- Certified
- 2026-05-12
Frequently asked questions
- What is Hong Loan Nguyen's NPI number?
- Hong Loan Nguyen's National Provider Identifier (NPI) is 1538696224, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hong Loan Nguyen's specialty?
- Hong Loan Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Hong Loan Nguyen located?
- Hong Loan Nguyen's practice location on file with NPPES is 1 Baylor Plz, Bcm 620, Houston, TX 77030-3411.
- What is Hong Loan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Hong Loan Nguyen is (713) 798-5588.
- Does Hong Loan Nguyen accept Medicare?
- Hong Loan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hong Loan Nguyen's NPI active?
- Yes — Hong Loan Nguyen's NPI (1538696224) is active in the NPPES registry as of the last update on 2026-05-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.