Catherine A. Gruenfelder
Registered Dietitian · Denville, NJ
Catherine A. Gruenfelder is a registered dietitian with a practice address in Denville, New Jersey, and NPI 1003765363, issued on Jan 28, 2026. Check the license (New Jersey 1057367, as entered in NPPES) with the New Jersey board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Catherine A. Gruenfelder
- Primary taxonomy
- Registered Dietitian 133V00000X
- License number
- 1057367 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 25 Pocono RD, Denville, NJ 07834
- Phone
- (973) 625-7009
- Enumerated
- Jan 28, 2026
- Record last updated
- Jan 28, 2026
- Medicare enrollment
- Enrolled (PECOS I20260415003352); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest registered dietitian records → All 2,006 in New Jersey → Look up another NPI →
Also registered at 25 Pocono RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Catherine A. Gruenfelder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Jersey board licenses this profession
Search for license 1057367Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Catherine A. Gruenfelder among 2,006 registered dietitian records in New Jersey
Catherine A. Gruenfelder is one of 2,006 registered dietitian records with a practice address in New Jersey. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2026, is newer than 95% of them.
- NPI issued2026 · 95% of these records are older, 0% newer
- In a Medicare fileNo · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 13% of these records are
- Graduated2014 · median 2010 among the 257 with a school on file
- Record last updated2026 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Registered Dietitian providers in New Jersey
There are 2,006 registered dietitian records in New Jersey. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,006 in New Jersey → Every provider in Denville → Registered Dietitian nationwide →
The 8 registered dietitian records with the nearest ZIP codes
- Katerina D'Andrea, RDNDenville, NJ 078341801351622
- Denise Devoe, RDDenville, NJ 078341043817091
- Deborah Kispert, R.D.Denville, NJ 078341689792871
- Joanne McMillian, RDDenville, NJ 078341982893707
- Kathleen Garriques, MS, RDColumbia, NJ 078321639592322
- Allison Mandell, MS, RDFlanders, NJ 078361760199871
- Catherine Ann Sebastian, MS, RDFlanders, NJ 078361548779127
- Jonathan Condon, MS, RDGreat Meadows, NJ 078381316756729
Common questions
What is Catherine A. Gruenfelder's NPI number?
Catherine A. Gruenfelder's National Provider Identifier (NPI) is 1003765363, issued on Jan 28, 2026. An NPI identifies a provider in billing; it is not a license.
Where is Catherine A. Gruenfelder located?
The NPPES record lists a practice address at 25 Pocono RD, Denville, NJ, 07834. Phone: (973) 625-7009. Providers update this record themselves, so call before visiting.
How can I verify Catherine A. Gruenfelder's license?
NPPES lists New Jersey license number 1057367, as entered by the provider. Search the New Jersey board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.