Daria Kotsar, MD
NPI 1891420725 · Internal Medicine Physician · East Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daria Kotsar, MD is a Internal Medicine Physician provider in East Boston, MA (NPI 1891420725).
Provider details
- NPI number
- 1891420725
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 1023390 (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
3 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
- 2022-07-25
- Last updated
- 2025-06-06
- Certified
- 2025-06-06
Frequently asked questions
- What is Daria Kotsar's NPI number?
- Daria Kotsar's National Provider Identifier (NPI) is 1891420725, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daria Kotsar's specialty?
- Daria Kotsar is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daria Kotsar located?
- Daria Kotsar's practice location on file with NPPES is 20 Maverick Sq, East Boston, MA 02128-2335.
- What is Daria Kotsar's phone number?
- The practice phone number listed in the NPPES registry for Daria Kotsar is (617) 569-5800.
- Does Daria Kotsar accept Medicare?
- Daria Kotsar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daria Kotsar's NPI active?
- Yes — Daria Kotsar's NPI (1891420725) is active in the NPPES registry as of the last update on 2025-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.