Marissa Udelsman, APRN
NPI 1811322373 · Pediatric Nurse Practitioner · Pasadena, CA
Marissa Udelsman, APRN is a Pediatric Nurse Practitioner provider in Pasadena, CA (NPI 1811322373).
Provider details
- NPI number
- 1811322373
- Entity type
- Individual
- Primary specialty
- Pediatric Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 95031209 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
- 2013-09-03
- Last updated
- 2025-08-28
- Certified
- 2025-08-28
Frequently asked questions
- What is Marissa Udelsman's NPI number?
- Marissa Udelsman's National Provider Identifier (NPI) is 1811322373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Udelsman's specialty?
- Marissa Udelsman is listed in the NPPES registry with a primary specialty of Pediatric Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marissa Udelsman located?
- Marissa Udelsman's practice location on file with NPPES is 1143 N Lake Ave, Pasadena, CA 91104-3740.
- What is Marissa Udelsman's phone number?
- The practice phone number listed in the NPPES registry for Marissa Udelsman is (626) 795-2110.
- Is Marissa Udelsman's NPI active?
- Yes — Marissa Udelsman's NPI (1811322373) is active in the NPPES registry as of the last update on 2025-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.