James Alonso, M.D.
NPI 1063506566 · Neurology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Alonso, M.D. is a Neurology Physician provider in Saint Louis, MO (NPI 1063506566).
Provider details
- NPI number
- 1063506566
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036150767 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,211 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 575 | $75 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 261 | $124 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 143 | $123 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 100 | $77 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 65 | $87 |
| Measurement of Brain Wave Activity (eeg), Awake and Drowsy95816 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 68 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levetiracetam | 226 | 47 |
| Gabapentin | 164 | 57 |
| Topiramate | 151 | 26 |
| Lamotrigine | 117 | 24 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 87 | 26 |
| Pregabalin | 85 | 18 |
| Divalproex Sodium | 83 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,044 across 226 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
Additional practice locations (2)
- 4700 Memorial Dr Ste 250Belleville, IL 62226-5373Phone: (618) 257-6480
- 3009 N Ballas RdSte 102bSaint Louis, MO 63131-2322Phone: (314) 996-7080Fax: (314) 996-7085
Registry dates
- Enumerated
- 2006-10-02
- Last updated
- 2023-11-06
- Certified
- 2023-11-06
Frequently asked questions
- What is James Alonso's NPI number?
- James Alonso's National Provider Identifier (NPI) is 1063506566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Alonso's specialty?
- James Alonso is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is James Alonso located?
- James Alonso's practice location on file with NPPES is 3009 N Ballas Rd Ste 102b, Saint Louis, MO 63131-2343.
- What is James Alonso's phone number?
- The practice phone number listed in the NPPES registry for James Alonso is (314) 996-7080.
- Does James Alonso accept Medicare?
- James Alonso is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Alonso's NPI active?
- Yes — James Alonso's NPI (1063506566) is active in the NPPES registry as of the last update on 2023-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.