Justin Collingham, M.D.
NPI 1346382314 · Maternal & Fetal Medicine Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Collingham, M.D. is a Maternal & Fetal Medicine Physician provider in Walnut Creek, CA (NPI 1346382314).
Provider details
- NPI number
- 1346382314
- Entity type
- Individual
- Primary specialty
- Maternal & Fetal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A90070 (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
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
Mailing address
Registry dates
- Enumerated
- 2007-02-13
- Last updated
- 2021-12-15
Frequently asked questions
- What is Justin Collingham's NPI number?
- Justin Collingham's National Provider Identifier (NPI) is 1346382314, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Collingham's specialty?
- Justin Collingham is listed in the NPPES registry with a primary specialty of Maternal & Fetal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Justin Collingham located?
- Justin Collingham's practice location on file with NPPES is 1656 N California Blvd, Walnut Creek, CA 94596-4180.
- What is Justin Collingham's phone number?
- The practice phone number listed in the NPPES registry for Justin Collingham is (925) 937-5214.
- Does Justin Collingham accept Medicare?
- Justin Collingham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Collingham's NPI active?
- Yes — Justin Collingham's NPI (1346382314) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.