Thien-An Hoang, M.D
NPI 1871792796 · Family Medicine Physician · Lake St Louis, MO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thien-An Hoang, M.D is a Family Medicine Physician provider in Lake St Louis, MO (NPI 1871792796).
Provider details
- NPI number
- 1871792796
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 2013041288 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
964 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 220 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 182 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 179 | $123 |
| Urine Microalbumin (protein) Level82043 | 55 | $6 |
| Creatinine Level to Test for Kidney Function Or Muscle Injury82570 | 55 | $5 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 55 | $87 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 150 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 776 | 233 |
| Amlodipine Besylate | 427 | 121 |
| Losartan Potassium | 397 | 121 |
| Levothyroxine Sodium | 381 | 98 |
| Omeprazole | 346 | 94 |
| Lisinopril | 289 | 85 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$472 across 25 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-11
- Last updated
- 2015-02-18
Frequently asked questions
- What is Thien-An Hoang's NPI number?
- Thien-An Hoang's National Provider Identifier (NPI) is 1871792796, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thien-An Hoang's specialty?
- Thien-An Hoang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thien-An Hoang located?
- Thien-An Hoang's practice location on file with NPPES is 200 Medical Plz, Lake St Louis, MO 63367-1379.
- What is Thien-An Hoang's phone number?
- The practice phone number listed in the NPPES registry for Thien-An Hoang is (636) 561-4100.
- Does Thien-An Hoang accept Medicare?
- Thien-An Hoang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thien-An Hoang's NPI active?
- Yes — Thien-An Hoang's NPI (1871792796) is active in the NPPES registry as of the last update on 2015-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.