Alexander Emerson, MD
NPI 1699208421 · Allergy & Immunology Physician · Louisville, KY
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Emerson, MD is a Allergy & Immunology Physician provider in Louisville, KY (NPI 1699208421).
Provider details
- NPI number
- 1699208421
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 60954 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
Mailing address
Registry dates
- Enumerated
- 2017-04-08
- Last updated
- 2026-01-12
- Certified
- 2026-01-12
Frequently asked questions
- What is Alexander Emerson's NPI number?
- Alexander Emerson's National Provider Identifier (NPI) is 1699208421, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Emerson's specialty?
- Alexander Emerson is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Emerson located?
- Alexander Emerson's practice location on file with NPPES is 2944 Breckenridge Ln, Louisville, KY 40220-1409.
- What is Alexander Emerson's phone number?
- The practice phone number listed in the NPPES registry for Alexander Emerson is (502) 995-5525.
- Does Alexander Emerson accept Medicare?
- Alexander Emerson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Emerson's NPI active?
- Yes — Alexander Emerson's NPI (1699208421) is active in the NPPES registry as of the last update on 2026-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.