Leslie Pyenson, M.D.
NPI 1598786782 · Internal Medicine Physician · Bethesda, MD
Leslie Pyenson, M.D. is a Internal Medicine Physician provider in Bethesda, MD (NPI 1598786782).
Provider details
- NPI number
- 1598786782
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0026677 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
- 2006-07-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Leslie Pyenson's NPI number?
- Leslie Pyenson's National Provider Identifier (NPI) is 1598786782, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leslie Pyenson's specialty?
- Leslie Pyenson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leslie Pyenson located?
- Leslie Pyenson's practice location on file with NPPES is 9220 Beech Hill Dr, Bethesda, MD 20817-1945.
- What is Leslie Pyenson's phone number?
- The practice phone number listed in the NPPES registry for Leslie Pyenson is (301) 365-5710.
- Is Leslie Pyenson's NPI active?
- Yes — Leslie Pyenson's NPI (1598786782) 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.