Chalmers Armstrong, M.D.
NPI 1871759134 · Family Medicine Physician · Studio City, CA
Chalmers Armstrong, M.D. is a Family Medicine Physician provider in Studio City, CA (NPI 1871759134).
Provider details
- NPI number
- 1871759134
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G37635 (CA)
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
17 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
- 2008-08-05
- Last updated
- 2008-08-05
Frequently asked questions
- What is Chalmers Armstrong's NPI number?
- Chalmers Armstrong's National Provider Identifier (NPI) is 1871759134, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chalmers Armstrong's specialty?
- Chalmers Armstrong is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chalmers Armstrong located?
- Chalmers Armstrong's practice location on file with NPPES is 11365 Ventura Blvd, Studio City, CA 91604-3148.
- What is Chalmers Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Chalmers Armstrong is (818) 769-0007.
- Is Chalmers Armstrong's NPI active?
- Yes — Chalmers Armstrong's NPI (1871759134) is active in the NPPES registry as of the last update on 2008-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.