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Helen Chang, M.D.
NPI 1427278688 · Internal Medicine Physician · Los Gatos, CA
Helen Chang, M.D. is a Internal Medicine Physician provider in Los Gatos, CA (NPI 1427278688).
Provider details
- NPI number
- 1427278688
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A37547 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
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
15195 National Ave
Suite 205
Los Gatos, CA 95032-2631
Phone: (408) 358-9917
Fax: (408) 358-9927
Street-level locationGet directions
Mailing address
15195 National Ave.,
Los Gatos,, CA 95032
Registry dates
- Enumerated
- 2007-04-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is Helen Chang's NPI number?
- Helen Chang's National Provider Identifier (NPI) is 1427278688, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Chang's specialty?
- Helen Chang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Chang located?
- Helen Chang's practice location on file with NPPES is 15195 National Ave, Los Gatos, CA 95032-2631.
- What is Helen Chang's phone number?
- The practice phone number listed in the NPPES registry for Helen Chang is (408) 358-9917.
- Is Helen Chang's NPI active?
- Yes — Helen Chang's NPI (1427278688) 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.