Helen Hwang, MD
NPI 1427408178 · Neurology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Hwang, MD is a Neurology Physician provider in Saint Louis, MO (NPI 1427408178).
Provider details
- NPI number
- 1427408178
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2020016524 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
284 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) |
|---|---|---|
| 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 | 93 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 67 | $122 |
| Administration of Psychological Or Neuropsychological Test By Technician, First 30 Minutes96138 | 41 | $32 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 33 | $174 |
| Injection of Chemical for Paralysis of Nerve Muscles on Side of Neck Excluding Voice Box64616 | 21 | $191 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 454 | 127 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa Er | 141 | 34 |
| Gabapentin | 79 | 21 |
| Clonazepam | 67 | 17 |
| Mirtazapine | 66 | 16 |
| Amantadine Hclbrand: Amantadine | 52 | 17 |
| Quetiapine Fumarate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-06-14
- Last updated
- 2025-04-17
Frequently asked questions
- What is Helen Hwang's NPI number?
- Helen Hwang's National Provider Identifier (NPI) is 1427408178, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Hwang's specialty?
- Helen Hwang is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Hwang located?
- Helen Hwang's practice location on file with NPPES is 4921 Parkview Pl, Saint Louis, MO 63110-1032.
- What is Helen Hwang's phone number?
- The practice phone number listed in the NPPES registry for Helen Hwang is (314) 362-6908.
- Does Helen Hwang accept Medicare?
- Helen Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Hwang's NPI active?
- Yes — Helen Hwang's NPI (1427408178) is active in the NPPES registry as of the last update on 2025-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.