Charles Grunau, MD
NPI 1851325344 · Emergency Medicine Physician · Somerville, NJ
Charles Grunau, MD is a Emergency Medicine Physician provider in Somerville, NJ (NPI 1851325344).
Provider details
- NPI number
- 1851325344
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA02409400 (NJ)
Specialties & taxonomies
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
- 2006-07-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is Charles Grunau's NPI number?
- Charles Grunau's National Provider Identifier (NPI) is 1851325344, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Grunau's specialty?
- Charles Grunau is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Grunau located?
- Charles Grunau's practice location on file with NPPES is 110 Rehill Avenue, Somerville, NJ 08876.
- What is Charles Grunau's phone number?
- The practice phone number listed in the NPPES registry for Charles Grunau is (908) 685-2920.
- Is Charles Grunau's NPI active?
- Yes — Charles Grunau's NPI (1851325344) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.