David Allen, M.D.
NPI 1558421305 · Internal Medicine Physician · Leonardtown, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Allen, M.D. is a Internal Medicine Physician provider in Leonardtown, MD (NPI 1558421305).
Provider details
- NPI number
- 1558421305
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0025230 (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
- 2006-12-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is David Allen's NPI number?
- David Allen's National Provider Identifier (NPI) is 1558421305, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Allen's specialty?
- David Allen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Allen located?
- David Allen's practice location on file with NPPES is 25500 Point Lookout Road, Leonardtown, MD 20650.
- What is David Allen's phone number?
- The practice phone number listed in the NPPES registry for David Allen is (301) 475-8981.
- Does David Allen accept Medicare?
- David Allen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Allen's NPI active?
- Yes — David Allen's NPI (1558421305) 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.