Daniel Hyun, MD
NPI 1194726448 · Neurology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Hyun, MD is a Neurology Physician provider in San Antonio, TX (NPI 1194726448).
Provider details
- NPI number
- 1194726448
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- L3346 (TX)
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
20 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
1,188 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 | 644 | $114 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 142 | $148 |
| Assessment of and Care Planning for Patient With Impaired Thought Processing, Typically 60 Minutes99483 | 122 | $243 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886 | 78 | $84 |
| Measurement of Brain Wave Activity (eeg), Awake and Asleep95819 | 43 | $393 |
| Measurement of Brain Wave Activity (eeg), Digital Analysis |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 935 | 206 |
| Pregabalin | 692 | 181 |
| Duloxetine Hcl | 543 | 138 |
| Memantine Hcl | 495 | 153 |
| Lamotrigine | 481 | 129 |
| Donepezil Hcl | 389 | 134 |
| Carbidopa/Levodopabrand: Rytary | 235 | 43 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15,500 across 322 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
- 2005-08-09
- Last updated
- 2023-03-21
- Certified
- 2023-03-21
Frequently asked questions
- What is Daniel Hyun's NPI number?
- Daniel Hyun's National Provider Identifier (NPI) is 1194726448, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Hyun's specialty?
- Daniel Hyun is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Hyun located?
- Daniel Hyun's practice location on file with NPPES is 3922 Wiseman Blvd Ste 304, San Antonio, TX 78251-1685.
- What is Daniel Hyun's phone number?
- The practice phone number listed in the NPPES registry for Daniel Hyun is (210) 226-3326.
- Does Daniel Hyun accept Medicare?
- Daniel Hyun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Hyun's NPI active?
- Yes — Daniel Hyun's NPI (1194726448) is active in the NPPES registry as of the last update on 2023-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.