Leonard Fischer, M.D.
NPI 1487614863 · Gastroenterology Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Fischer, M.D. is a Gastroenterology Physician provider in Fairfax, VA (NPI 1487614863).
Provider details
- NPI number
- 1487614863
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD469668 (PA)
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
- 2006-03-28
- Last updated
- 2021-07-27
- Certified
- 2021-07-27
Frequently asked questions
- What is Leonard Fischer's NPI number?
- Leonard Fischer's National Provider Identifier (NPI) is 1487614863, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Fischer's specialty?
- Leonard Fischer is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Fischer located?
- Leonard Fischer's practice location on file with NPPES is 3620 Joseph Siewick Dr, Fairfax, VA 22033-1756.
- What is Leonard Fischer's phone number?
- The practice phone number listed in the NPPES registry for Leonard Fischer is (703) 281-1023.
- Does Leonard Fischer accept Medicare?
- Leonard Fischer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Fischer's NPI active?
- Yes — Leonard Fischer's NPI (1487614863) is active in the NPPES registry as of the last update on 2021-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.