OrganizationActive
J Mario V Alonso Jr Inc
NPI 1538253430 · Neurology Physician · Saint Louis, MO
J Mario V Alonso Jr Inc is a Neurology Physician organization in Saint Louis, MO (NPI 1538253430).
Provider details
- NPI number
- 1538253430
- Entity type
- Organization
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- James Alonso, President(314) 487-3155
- License
- 106036 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
2716 Telegraph Rd
Suite 105
Saint Louis, MO 63125-4078
Phone: (314) 487-3155
Street-level locationGet directions
Mailing address
2716 Telegraph Rd
Saint Louis, MO 63125-4078
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2012-01-04
Frequently asked questions
- What is J Mario V Alonso Jr Inc's NPI number?
- J Mario V Alonso Jr Inc's National Provider Identifier (NPI) is 1538253430, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is J Mario V Alonso Jr Inc?
- J Mario V Alonso Jr Inc is classified in the NPPES registry as Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is J Mario V Alonso Jr Inc located?
- J Mario V Alonso Jr Inc's practice location on file with NPPES is 2716 Telegraph Rd, Saint Louis, MO 63125-4078.
- What is J Mario V Alonso Jr Inc's phone number?
- The practice phone number listed in the NPPES registry for J Mario V Alonso Jr Inc is (314) 487-3155.
- Who is the authorized official for J Mario V Alonso Jr Inc?
- The authorized official listed on J Mario V Alonso Jr Inc's NPPES record is James Alonso, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is J Mario V Alonso Jr Inc's NPI active?
- Yes — J Mario V Alonso Jr Inc's NPI (1538253430) is active in the NPPES registry as of the last update on 2012-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.