Crystal Alpert, PA-C
NPI 1821225319 · Medical Physician Assistant · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crystal Alpert, PA-C is a Medical Physician Assistant provider in Walnut Creek, CA (NPI 1821225319).
Provider details
- NPI number
- 1821225319
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA20344 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 2481 Pacheco StConcord, CA 94520-2019Phone: (925) 680-8933Fax: (925) 680-7635
Registry dates
- Enumerated
- 2009-06-11
- Last updated
- 2025-03-04
- Certified
- 2025-03-04
Frequently asked questions
- What is Crystal Alpert's NPI number?
- Crystal Alpert's National Provider Identifier (NPI) is 1821225319, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Alpert's specialty?
- Crystal Alpert is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Crystal Alpert located?
- Crystal Alpert's practice location on file with NPPES is 110 Tampico, Walnut Creek, CA 94598-2962.
- What is Crystal Alpert's phone number?
- The practice phone number listed in the NPPES registry for Crystal Alpert is (925) 935-6952.
- Does Crystal Alpert accept Medicare?
- Crystal Alpert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Crystal Alpert's NPI active?
- Yes — Crystal Alpert's NPI (1821225319) is active in the NPPES registry as of the last update on 2025-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.