Quick answers
- Does An L. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says An L. Nguyen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does An L. Nguyen see?
- In 2024, CMS data shows 104 Original Medicare patients and 5,192 services for An L. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is An L. Nguyen's NPI number?
- 1841559283. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for An L. 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.
| Original Medicare patients | 104 |
|---|---|
| Services billed to Medicare | 5,192 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Test for allergy using allergenic extract (95004)2,315 services
- Test for allergy using allergenic extract injected into skin (95024)759 services
- Professional service for preparation and provision of single-dose vial of allergen (95144)563 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)87 services
- Administration and interpretation of patient-focused health risk assessment (96160)36 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 cholesterol75%
- High blood pressure74%
- Arthritis53%
- Asthma38%
- Ischemic heart disease25%
- Diabetes24%
Practice locations
Addresses where An L. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 4710 Bellaire Blvd, Suite 200Bellaire, TX 77401 (713) 661‑1444
Group practices
Medicare enrollment lists An L. Nguyen as a member of this group (CMS data updated October 2, 2026).
- McGovern Allergy Clinic, P.A.4 clinicians in the group
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in Bellaire
Clinicians with the same Medicare primary specialty in Bellaire, TX — not a recommendation.
Other clinicians in McGovern Allergy Clinic, P.A.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1841559283 |
| Corrections | Report an error or suggest an update → |
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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians