Robert Mathieson, M.D.
NPI 1982701959 · Gastroenterology Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Mathieson, M.D. is a Gastroenterology Physician provider in Baltimore, MD (NPI 1982701959).
Provider details
- NPI number
- 1982701959
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D21327 (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
19 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
- 2006-09-20
- Last updated
- 2008-05-05
Frequently asked questions
- What is Robert Mathieson's NPI number?
- Robert Mathieson's National Provider Identifier (NPI) is 1982701959, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Mathieson's specialty?
- Robert Mathieson is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Mathieson located?
- Robert Mathieson's practice location on file with NPPES is 3333 N Calvert St, Baltimore, MD 21218-2867.
- What is Robert Mathieson's phone number?
- The practice phone number listed in the NPPES registry for Robert Mathieson is (410) 243-4460.
- Does Robert Mathieson accept Medicare?
- Robert Mathieson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Mathieson's NPI active?
- Yes — Robert Mathieson's NPI (1982701959) is active in the NPPES registry as of the last update on 2008-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.