Justin Huynh, M.D.
NPI 1902096613 · Internal Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Huynh, M.D. is a Internal Medicine Physician provider in Saint Louis, MO (NPI 1902096613).
Provider details
- NPI number
- 1902096613
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2009029861 (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
9 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
319 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 155 | $123 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 112 | $16 |
| Administration of Influenza Virus VaccineG0008 | 20 | $31 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 18 | $87 |
| Hemoglobin A1c Level83036 | 14 | $10 |
Typical Medicare-allowed amounts for these services range $10–$123 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 117 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 424 | 149 |
| Amlodipine Besylate | 245 | 87 |
| Lisinopril | 218 | 80 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 191 | 44 |
| Levothyroxine Sodium | 178 | 56 |
| Omeprazole | 157 | 48 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 1 record (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
Additional practice locations (8)
- 15740 S Outer 40 RdChesterfield, MO 63017-2004Phone: (636) 735-4205
- 16659 E 23rd St SIndependence, MO 64055-1922Phone: (816) 688-6000Fax: (816) 631-1885
- 8033 W Florissant Ave Ste aJennings, MO 63136-1412Phone: (314) 888-0971Fax: (314) 408-7062
- 3451 Union BlvdSaint Louis, MO 63115-1142Phone: (314) 888-0970Fax: (314) 408-7063
- 4460 S Lindbergh BlvdSaint Louis, MO 63127-1647Phone: (314) 843-7557Fax: (314) 849-8671
- 10024 Watson RdSaint Louis, MO 63126-1829Phone: (314) 919-2500
- 3863a Gravois AveSaint Louis, MO 63116-4657Phone: (314) 888-0981Fax: (314) 442-7794
- 4460 S Lindbergh BlvdSaint Louis, MO 63127-1647Phone: (314) 843-7557Fax: (314) 849-8671
Registry dates
- Enumerated
- 2007-07-29
- Last updated
- 2026-03-31
- Certified
- 2026-03-31
Frequently asked questions
- What is Justin Huynh's NPI number?
- Justin Huynh's National Provider Identifier (NPI) is 1902096613, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Huynh's specialty?
- Justin Huynh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Justin Huynh located?
- Justin Huynh's practice location on file with NPPES is 4460 S Lindbergh Blvd, Saint Louis, MO 63127-1647.
- What is Justin Huynh's phone number?
- The practice phone number listed in the NPPES registry for Justin Huynh is (314) 843-7557.
- Does Justin Huynh accept Medicare?
- Justin Huynh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Huynh's NPI active?
- Yes — Justin Huynh's NPI (1902096613) is active in the NPPES registry as of the last update on 2026-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.