Karen Shimotsu, MD
NPI 1043246846 · Family Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Shimotsu, MD is a Family Medicine Physician provider in San Antonio, TX (NPI 1043246846).
Provider details
- NPI number
- 1043246846
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- H2779 (TX)
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
20 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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 28 | 18 |
| Amlodipine Besylate | 26 | 21 |
| Rosuvastatin Calcium | 23 | 17 |
| Atorvastatin Calcium | 12 | — |
| Allopurinol | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-23
- Last updated
- 2020-09-17
- Certified
- 2020-09-17
Frequently asked questions
- What is Karen Shimotsu's NPI number?
- Karen Shimotsu's National Provider Identifier (NPI) is 1043246846, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Shimotsu's specialty?
- Karen Shimotsu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Shimotsu located?
- Karen Shimotsu's practice location on file with NPPES is 15102 Huebner Rd, San Antonio, TX 78231-1739.
- What is Karen Shimotsu's phone number?
- The practice phone number listed in the NPPES registry for Karen Shimotsu is (210) 493-3993.
- Does Karen Shimotsu accept Medicare?
- Karen Shimotsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Shimotsu's NPI active?
- Yes — Karen Shimotsu's NPI (1043246846) is active in the NPPES registry as of the last update on 2020-09-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.