OrganizationActive
Charles E. Groncy, MD Inc
NPI 1083629935 · Allergy Physician · Fullerton, CA
Charles E. Groncy, MD Inc is a Allergy Physician organization in Fullerton, CA (NPI 1083629935).
Provider details
- NPI number
- 1083629935
- Entity type
- Organization
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Charles Groncy, President(714) 680-6220
- License
- C36424 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
301 W Bastanchury Rd
Suite 25
Fullerton, CA 92835-3419
Phone: (714) 680-6220
Fax: (714) 680-3893
Approximate (ZIP-level) locationGet directions
Mailing address
301 W Bastanchury Rd
Fullerton, CA 92835-3419
Registry dates
- Enumerated
- 2006-07-29
- Last updated
- 2008-11-14
Frequently asked questions
- What is Charles E. Groncy, MD Inc's NPI number?
- Charles E. Groncy, MD Inc's National Provider Identifier (NPI) is 1083629935, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Charles E. Groncy, MD Inc?
- Charles E. Groncy, MD Inc is classified in the NPPES registry as Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is Charles E. Groncy, MD Inc located?
- Charles E. Groncy, MD Inc's practice location on file with NPPES is 301 W Bastanchury Rd, Fullerton, CA 92835-3419.
- What is Charles E. Groncy, MD Inc's phone number?
- The practice phone number listed in the NPPES registry for Charles E. Groncy, MD Inc is (714) 680-6220.
- Who is the authorized official for Charles E. Groncy, MD Inc?
- The authorized official listed on Charles E. Groncy, MD Inc's NPPES record is Charles Groncy, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Charles E. Groncy, MD Inc's NPI active?
- Yes — Charles E. Groncy, MD Inc's NPI (1083629935) is active in the NPPES registry as of the last update on 2008-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.