John Armstrong, MD
NPI 1992701163 · Infectious Disease Physician · Winchester, VA
John Armstrong, MD is a Infectious Disease Physician provider in Winchester, VA (NPI 1992701163).
Provider details
- NPI number
- 1992701163
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- 0101029447 (VA)
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
21 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
- 2005-06-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Armstrong's NPI number?
- John Armstrong's National Provider Identifier (NPI) is 1992701163, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Armstrong's specialty?
- John Armstrong is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Armstrong located?
- John Armstrong's practice location on file with NPPES is 104 Selma Dr, Winchester, VA 22601-3834.
- What is John Armstrong's phone number?
- The practice phone number listed in the NPPES registry for John Armstrong is (540) 678-2800.
- Is John Armstrong's NPI active?
- Yes — John Armstrong's NPI (1992701163) 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.