Susan Mastellone, DO
NPI 1255379822 · Emergency Medicine Physician · Baltimore, MD
Susan Mastellone, DO is a Emergency Medicine Physician provider in Baltimore, MD (NPI 1255379822).
Provider details
- NPI number
- 1255379822
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- License
- H55662 (MD)
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
- 2006-06-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Susan Mastellone's NPI number?
- Susan Mastellone's National Provider Identifier (NPI) is 1255379822, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Mastellone's specialty?
- Susan Mastellone is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Mastellone located?
- Susan Mastellone's practice location on file with NPPES is 3001 S Hanover St, Baltimore, MD 21225-1233.
- What is Susan Mastellone's phone number?
- The practice phone number listed in the NPPES registry for Susan Mastellone is (410) 350-3509.
- Is Susan Mastellone's NPI active?
- Yes — Susan Mastellone's NPI (1255379822) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.