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Donald Armstrong, M.D.
NPI 1881672665 · Gynecology Physician · Fullerton, CA
Donald Armstrong, M.D. is a Gynecology Physician provider in Fullerton, CA (NPI 1881672665).
Provider details
- NPI number
- 1881672665
- Entity type
- Individual
- Primary specialty
- Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G36898 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
100 E Valencia Mesa Dr
Suite #215
Fullerton, CA 92835-3813
Phone: (714) 879-6533
Fax: (714) 879-3037
Street-level locationGet directions
Mailing address
100 E Valencia Mesa Dr
Fullerton, CA 92835-3813
Registry dates
- Enumerated
- 2006-01-03
- Last updated
- 2011-10-07
Frequently asked questions
- What is Donald Armstrong's NPI number?
- Donald Armstrong's National Provider Identifier (NPI) is 1881672665, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Armstrong's specialty?
- Donald Armstrong is listed in the NPPES registry with a primary specialty of Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Armstrong located?
- Donald Armstrong's practice location on file with NPPES is 100 E Valencia Mesa Dr, Fullerton, CA 92835-3813.
- What is Donald Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Donald Armstrong is (714) 879-6533.
- Is Donald Armstrong's NPI active?
- Yes — Donald Armstrong's NPI (1881672665) is active in the NPPES registry as of the last update on 2011-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.