Alexander Wielaard, MD
NPI 1144438995 · Emergency Medicine Physician · Walnut, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Wielaard, MD is a Emergency Medicine Physician provider in Walnut, CA (NPI 1144438995).
Provider details
- NPI number
- 1144438995
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0071128 (MD)
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 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
Mailing address
Registry dates
- Enumerated
- 2007-05-17
- Last updated
- 2016-11-21
Frequently asked questions
- What is Alexander Wielaard's NPI number?
- Alexander Wielaard's National Provider Identifier (NPI) is 1144438995, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Wielaard's specialty?
- Alexander Wielaard is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Wielaard located?
- Alexander Wielaard's practice location on file with NPPES is 340 S Lemon Ave, Walnut, CA 91789-2706.
- What is Alexander Wielaard's phone number?
- The practice phone number listed in the NPPES registry for Alexander Wielaard is (706) 306-4668.
- Does Alexander Wielaard accept Medicare?
- Alexander Wielaard is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Wielaard's NPI active?
- Yes — Alexander Wielaard's NPI (1144438995) is active in the NPPES registry as of the last update on 2016-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.