Nancy Dierenfield, D.C.
NPI 1649486325 · Chiropractor · Sioux City, IA
Nancy Dierenfield, D.C. is a Chiropractor provider in Sioux City, IA (NPI 1649486325).
Provider details
- NPI number
- 1649486325
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- D.C.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 947 (NE)
Specialties & taxonomies
Chiropractic Providers
Chiropractic Providers
Chiropractic Providers
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
- 2007-05-16
- Last updated
- 2019-08-07
Frequently asked questions
- What is Nancy Dierenfield's NPI number?
- Nancy Dierenfield's National Provider Identifier (NPI) is 1649486325, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Dierenfield's specialty?
- Nancy Dierenfield is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Nancy Dierenfield located?
- Nancy Dierenfield's practice location on file with NPPES is 4501 Southern Hills Dr, Sioux City, IA 51106.
- What is Nancy Dierenfield's phone number?
- The practice phone number listed in the NPPES registry for Nancy Dierenfield is (712) 274-7246.
- Is Nancy Dierenfield's NPI active?
- Yes — Nancy Dierenfield's NPI (1649486325) is active in the NPPES registry as of the last update on 2019-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.