Bruce Nelson, M.D.
NPI 1649269614 · Allergy & Immunology (Internal Medicine) Physician · Mission Viejo, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bruce Nelson, M.D. is a Allergy & Immunology (Internal Medicine) Physician provider in Mission Viejo, CA (NPI 1649269614).
Provider details
- NPI number
- 1649269614
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G046205 (CA)
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
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
Mailing address
Registry dates
- Enumerated
- 2005-10-20
- Last updated
- 2008-11-06
Frequently asked questions
- What is Bruce Nelson's NPI number?
- Bruce Nelson's National Provider Identifier (NPI) is 1649269614, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bruce Nelson's specialty?
- Bruce Nelson is listed in the NPPES registry with a primary specialty of Allergy & Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Bruce Nelson located?
- Bruce Nelson's practice location on file with NPPES is 26800 Crown Valley Pkwy, Mission Viejo, CA 92691-6384.
- What is Bruce Nelson's phone number?
- The practice phone number listed in the NPPES registry for Bruce Nelson is (949) 364-6000.
- Does Bruce Nelson accept Medicare?
- Bruce Nelson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bruce Nelson's NPI active?
- Yes — Bruce Nelson's NPI (1649269614) is active in the NPPES registry as of the last update on 2008-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.