123 Medical Group Corp.
NPI 1588029771 · Family Medicine Physician · Walnut, CA
123 Medical Group Corp. is a Family Medicine Physician organization in Walnut, CA (NPI 1588029771).
Provider details
- NPI number
- 1588029771
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Allan Chang, President(626) 889-6917
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Acupuncturist171100000X
Other Service Providers
- Obstetrics & Gynecology Physician207V00000X
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
- 2015-12-15
- Last updated
- 2022-08-09
- Certified
- 2022-08-09
Frequently asked questions
- What is 123 Medical Group Corp.'s NPI number?
- 123 Medical Group Corp.'s National Provider Identifier (NPI) is 1588029771, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is 123 Medical Group Corp.?
- 123 Medical Group Corp. is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is 123 Medical Group Corp. located?
- 123 Medical Group Corp.'s practice location on file with NPPES is 18800 Amar Rd Ste C12, Walnut, CA 91789-4561.
- What is 123 Medical Group Corp.'s phone number?
- The practice phone number listed in the NPPES registry for 123 Medical Group Corp. is (626) 788-9691.
- Who is the authorized official for 123 Medical Group Corp.?
- The authorized official listed on 123 Medical Group Corp.'s NPPES record is Allan Chang, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is 123 Medical Group Corp.'s NPI active?
- Yes — 123 Medical Group Corp.'s NPI (1588029771) is active in the NPPES registry as of the last update on 2022-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.