Nancy Sierra, MD
NPI 1083609846 · Emergency Medicine Physician · Newark, NJ
Nancy Sierra, MD is a Emergency Medicine Physician provider in Newark, NJ (NPI 1083609846).
Provider details
- NPI number
- 1083609846
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 25MA05590000 (NJ)
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
- 2005-09-16
- Last updated
- 2009-07-28
Frequently asked questions
- What is Nancy Sierra's NPI number?
- Nancy Sierra's National Provider Identifier (NPI) is 1083609846, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Sierra's specialty?
- Nancy Sierra is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Sierra located?
- Nancy Sierra's practice location on file with NPPES is 268 Dr Martin Luther King Jr Blvd, Newark, NJ 07102-2011.
- What is Nancy Sierra's phone number?
- The practice phone number listed in the NPPES registry for Nancy Sierra is (973) 877-5000.
- Is Nancy Sierra's NPI active?
- Yes — Nancy Sierra's NPI (1083609846) is active in the NPPES registry as of the last update on 2009-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.