Robert Posen, D.O.
NPI 1841258753 · Neonatal-Perinatal Medicine Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Posen, D.O. is a Neonatal-Perinatal Medicine Physician provider in Pasadena, CA (NPI 1841258753).
Provider details
- NPI number
- 1841258753
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 2OA6270 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-05-02
- Last updated
- 2023-07-17
- Certified
- 2023-07-17
Frequently asked questions
- What is Robert Posen's NPI number?
- Robert Posen's National Provider Identifier (NPI) is 1841258753, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Posen's specialty?
- Robert Posen is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Posen located?
- Robert Posen's practice location on file with NPPES is 100 W California Blvd, Pasadena, CA 91105-3010.
- What is Robert Posen's phone number?
- The practice phone number listed in the NPPES registry for Robert Posen is (626) 397-8524.
- Does Robert Posen accept Medicare?
- Robert Posen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Posen's NPI active?
- Yes — Robert Posen's NPI (1841258753) is active in the NPPES registry as of the last update on 2023-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.