Karisa Thayer, M.D.
NPI 1558765941 · Internal Medicine Physician · Gardena, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karisa Thayer, M.D. is a Internal Medicine Physician provider in Gardena, CA (NPI 1558765941).
Provider details
- NPI number
- 1558765941
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A140754 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
11 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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 62 | 31 |
| Amlodipine Besylate | 41 | 26 |
| Metformin Hcl | 25 | 14 |
| Hydrochlorothiazide | 23 | 13 |
| Empagliflozinbrand: Jardiance | 18 | — |
| Lisinopril | 16 | 11 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-10-14
- Last updated
- 2022-11-17
- Certified
- 2022-11-17
Frequently asked questions
- What is Karisa Thayer's NPI number?
- Karisa Thayer's National Provider Identifier (NPI) is 1558765941, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karisa Thayer's specialty?
- Karisa Thayer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karisa Thayer located?
- Karisa Thayer's practice location on file with NPPES is 742 W Gardena Blvd, Gardena, CA 90247-5024.
- What is Karisa Thayer's phone number?
- The practice phone number listed in the NPPES registry for Karisa Thayer is (310) 327-1357.
- Does Karisa Thayer accept Medicare?
- Karisa Thayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karisa Thayer's NPI active?
- Yes — Karisa Thayer's NPI (1558765941) is active in the NPPES registry as of the last update on 2022-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.