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Ferdinand Alfonso, MD
NPI 1356339733 · Neurology Physician · Duarte, CA
Ferdinand Alfonso, MD is a Neurology Physician provider in Duarte, CA (NPI 1356339733).
Provider details
- NPI number
- 1356339733
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A40114 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
931 Buena Vista St
Suite 503
Duarte, CA 91010-1712
Phone: (626) 357-8003
Fax: (626) 357-8402
Street-level locationGet directions
Mailing address
931 Buena Vista St
Duarte, CA 91010-1712
Registry dates
- Enumerated
- 2005-10-11
- Last updated
- 2011-10-27
Frequently asked questions
- What is Ferdinand Alfonso's NPI number?
- Ferdinand Alfonso's National Provider Identifier (NPI) is 1356339733, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ferdinand Alfonso's specialty?
- Ferdinand Alfonso is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Ferdinand Alfonso located?
- Ferdinand Alfonso's practice location on file with NPPES is 931 Buena Vista St, Duarte, CA 91010-1712.
- What is Ferdinand Alfonso's phone number?
- The practice phone number listed in the NPPES registry for Ferdinand Alfonso is (626) 357-8003.
- Is Ferdinand Alfonso's NPI active?
- Yes — Ferdinand Alfonso's NPI (1356339733) is active in the NPPES registry as of the last update on 2011-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.