Marilyn Day, MD
NPI 1790427086 · Student in an Organized Health Care Education/Training Program · Stony Brook, NY
Marilyn Day, MD is a Student in an Organized Health Care Education/Training Program provider in Stony Brook, NY (NPI 1790427086).
Provider details
- NPI number
- 1790427086
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
Mailing address
Registry dates
- Enumerated
- 2022-04-08
- Last updated
- 2022-04-08
- Certified
- 2022-04-08
Frequently asked questions
- What is Marilyn Day's NPI number?
- Marilyn Day's National Provider Identifier (NPI) is 1790427086, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marilyn Day's specialty?
- Marilyn Day is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Marilyn Day located?
- Marilyn Day's practice location on file with NPPES is 101 Nicolls Road, Stony Brook, NY 11794-8091.
- What is Marilyn Day's phone number?
- The practice phone number listed in the NPPES registry for Marilyn Day is (631) 444-2739.
- Is Marilyn Day's NPI active?
- Yes — Marilyn Day's NPI (1790427086) is active in the NPPES registry as of the last update on 2022-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.