Kristen Vierregger, MD
NPI 1447699582 · General Practice Physician · Buena Park, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kristen Vierregger, MD is a General Practice Physician provider in Buena Park, CA (NPI 1447699582).
Provider details
- NPI number
- 1447699582
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A112427 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Progesterone, Micronizedbrand: Progesterone | 60 | 15 |
| Estradiol | 40 | — |
| Estradiol Valerate | 33 | — |
| Bicalutamide | 24 | — |
| Escitalopram Oxalate | 17 | — |
| Estradiolbrand: Estradiol (once Weekly) | 12 | — |
| Estradiolbrand: Estradiol (twice Weekly) | 11 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-21
- Last updated
- 2022-06-21
- Certified
- 2022-06-21
Frequently asked questions
- What is Kristen Vierregger's NPI number?
- Kristen Vierregger's National Provider Identifier (NPI) is 1447699582, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kristen Vierregger's specialty?
- Kristen Vierregger is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Kristen Vierregger located?
- Kristen Vierregger's practice location on file with NPPES is 8081 Stanton Ave Ste 300, Buena Park, CA 90620-3246.
- What is Kristen Vierregger's phone number?
- The practice phone number listed in the NPPES registry for Kristen Vierregger is (714) 484-8000.
- Does Kristen Vierregger accept Medicare?
- Kristen Vierregger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kristen Vierregger's NPI active?
- Yes — Kristen Vierregger's NPI (1447699582) is active in the NPPES registry as of the last update on 2022-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.