IndividualActive
Rosalyn Marcus, R.N.
NPI 1326373036 · Registered Nurse · Baltimore, MD
Rosalyn Marcus, R.N. is a Registered Nurse provider in Baltimore, MD (NPI 1326373036).
Provider details
- NPI number
- 1326373036
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- R.N.
- Sex
- Female
- Sole proprietor
- Yes
- License
- R185307 (MD)
Specialties & taxonomies
Nursing Service Providers
Nursing Service Providers
Profile Score
Detailed profile(84/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
201 East University
Union Memorial Hospital
Baltimore, MD 21218
Phone: (410) 554-2934
Fax: (410) 554-6490
Street-level locationGet directions
Mailing address
27 Booth St Unit 146
Gaithersburg, MD 20878-6589
Registry dates
- Enumerated
- 2009-10-14
- Last updated
- 2009-10-14
Frequently asked questions
- What is Rosalyn Marcus's NPI number?
- Rosalyn Marcus's National Provider Identifier (NPI) is 1326373036, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rosalyn Marcus's specialty?
- Rosalyn Marcus is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Rosalyn Marcus located?
- Rosalyn Marcus's practice location on file with NPPES is 201 East University, Baltimore, MD 21218.
- What is Rosalyn Marcus's phone number?
- The practice phone number listed in the NPPES registry for Rosalyn Marcus is (410) 554-2934.
- Is Rosalyn Marcus's NPI active?
- Yes — Rosalyn Marcus's NPI (1326373036) is active in the NPPES registry as of the last update on 2009-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.