Erin Chong, M.D.
NPI 1407111271 · Obstetrics & Gynecology Physician · Sunnyvale, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Chong, M.D. is a Obstetrics & Gynecology Physician provider in Sunnyvale, CA (NPI 1407111271).
Provider details
- NPI number
- 1407111271
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A129139 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
- 2012-07-09
- Last updated
- 2016-10-10
Frequently asked questions
- What is Erin Chong's NPI number?
- Erin Chong's National Provider Identifier (NPI) is 1407111271, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Chong's specialty?
- Erin Chong is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Erin Chong located?
- Erin Chong's practice location on file with NPPES is 301 Old San Francisco Rd, Sunnyvale, CA 94086-6386.
- What is Erin Chong's phone number?
- The practice phone number listed in the NPPES registry for Erin Chong is (408) 730-4240.
- Does Erin Chong accept Medicare?
- Erin Chong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Chong's NPI active?
- Yes — Erin Chong's NPI (1407111271) is active in the NPPES registry as of the last update on 2016-10-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.