Sylvia Sontheimer
NPI 1205412830 · Emergency Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sylvia Sontheimer is a Emergency Medicine Physician provider in Boston, MA (NPI 1205412830).
Provider details
- NPI number
- 1205412830
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 289987 (MA)
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
5 yrs in NPPES registry
- Profile completeness38% of score
100% 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)
- Corner of Route N12 and N7Fort Defiance, AZ 86504Phone: (928) 729-8000
Registry dates
- Enumerated
- 2021-03-23
- Last updated
- 2025-07-25
- Certified
- 2025-07-25
Frequently asked questions
- What is Sylvia Sontheimer's NPI number?
- Sylvia Sontheimer's National Provider Identifier (NPI) is 1205412830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sylvia Sontheimer's specialty?
- Sylvia Sontheimer is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sylvia Sontheimer located?
- Sylvia Sontheimer's practice location on file with NPPES is 1 Boston Medical Ctr Pl Ste 1, Boston, MA 02118-2999.
- What is Sylvia Sontheimer's phone number?
- The practice phone number listed in the NPPES registry for Sylvia Sontheimer is (617) 638-8000.
- Does Sylvia Sontheimer accept Medicare?
- Sylvia Sontheimer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sylvia Sontheimer's NPI active?
- Yes — Sylvia Sontheimer's NPI (1205412830) is active in the NPPES registry as of the last update on 2025-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.