Nathan Nellessen
NPI 1548849102 · Occupational Medicine Physician · Loma Linda, CA
Nathan Nellessen is a Occupational Medicine Physician provider in Loma Linda, CA (NPI 1548849102).
Provider details
- NPI number
- 1548849102
- Entity type
- Individual
- Primary specialty
- Occupational Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2021-04-02
- Last updated
- 2023-07-20
- Certified
- 2023-07-20
Frequently asked questions
- What is Nathan Nellessen's NPI number?
- Nathan Nellessen's National Provider Identifier (NPI) is 1548849102, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Nellessen's specialty?
- Nathan Nellessen is listed in the NPPES registry with a primary specialty of Occupational Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Nellessen located?
- Nathan Nellessen's practice location on file with NPPES is 11234 Anderson St, Loma Linda, CA 92354-2804.
- What is Nathan Nellessen's phone number?
- The practice phone number listed in the NPPES registry for Nathan Nellessen is (909) 558-6491.
- Is Nathan Nellessen's NPI active?
- Yes — Nathan Nellessen's NPI (1548849102) is active in the NPPES registry as of the last update on 2023-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.