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Marcia Sack, MSRD
NPI 1194862441 · Registered Dietitian · Simi Valley, CA
Marcia Sack, MSRD is a Registered Dietitian provider in Simi Valley, CA (NPI 1194862441).
Provider details
- NPI number
- 1194862441
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- MSRD
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Detailed profile(83/100 index)
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
83% 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
335 Fresh Meadows Rd
Simi Valley, CA 93065-6818
Phone: (805) 527-3559
Fax: (805) 527-2634
Street-level locationGet directions
Mailing address
335 Fresh Meadows Rd
Simi Valley, CA 93065-6818
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is Marcia Sack's NPI number?
- Marcia Sack's National Provider Identifier (NPI) is 1194862441, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcia Sack's specialty?
- Marcia Sack is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Marcia Sack located?
- Marcia Sack's practice location on file with NPPES is 335 Fresh Meadows Rd, Simi Valley, CA 93065-6818.
- What is Marcia Sack's phone number?
- The practice phone number listed in the NPPES registry for Marcia Sack is (805) 527-3559.
- Is Marcia Sack's NPI active?
- Yes — Marcia Sack's NPI (1194862441) 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.