Stephan Siebel
NPI 1174720957 · Pediatric Endocrinology Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephan Siebel is a Pediatric Endocrinology Physician provider in New Haven, CT (NPI 1174720957).
Provider details
- NPI number
- 1174720957
- Entity type
- Individual
- Primary specialty
- Pediatric Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 2100 Stantonsburg RdPcmh Graduate Medical EducationGreenville, NC 27834-2818Phone: (252) 847-4268
Registry dates
- Enumerated
- 2007-06-27
- Last updated
- 2022-07-21
Frequently asked questions
- What is Stephan Siebel's NPI number?
- Stephan Siebel's National Provider Identifier (NPI) is 1174720957, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephan Siebel's specialty?
- Stephan Siebel is listed in the NPPES registry with a primary specialty of Pediatric Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephan Siebel located?
- Stephan Siebel's practice location on file with NPPES is 330 Cedar St # 3103, New Haven, CT 06510-3218.
- What is Stephan Siebel's phone number?
- The practice phone number listed in the NPPES registry for Stephan Siebel is (252) 847-4268.
- Does Stephan Siebel accept Medicare?
- Stephan Siebel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephan Siebel's NPI active?
- Yes — Stephan Siebel's NPI (1174720957) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.