Ena Nielsen, MD
NPI 1942761101 · Orthopaedic Surgery Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ena Nielsen, MD is a Orthopaedic Surgery Physician provider in San Diego, CA (NPI 1942761101).
Provider details
- NPI number
- 1942761101
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A194997 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$296 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-03-28
- Last updated
- 2024-04-18
- Certified
- 2024-04-18
Frequently asked questions
- What is Ena Nielsen's NPI number?
- Ena Nielsen's National Provider Identifier (NPI) is 1942761101, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ena Nielsen's specialty?
- Ena Nielsen is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Ena Nielsen located?
- Ena Nielsen's practice location on file with NPPES is 3030 Childrens Way, San Diego, CA 92123-4232.
- What is Ena Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Ena Nielsen is (858) 966-6789.
- Does Ena Nielsen accept Medicare?
- Ena Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ena Nielsen's NPI active?
- Yes — Ena Nielsen's NPI (1942761101) is active in the NPPES registry as of the last update on 2024-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.