Richard Shimizu, MD
NPI 1164466645 · Internal Medicine Physician · Springfield, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Shimizu, MD is a Internal Medicine Physician provider in Springfield, MO (NPI 1164466645).
Provider details
- NPI number
- 1164466645
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 115271 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,117 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 291 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 223 | $118 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 185 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 168 | $13 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 156 | $8 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 154 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 121 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 783 | 199 |
| Amlodipine Besylate | 444 | 106 |
| Lisinopril | 427 | 115 |
| Metoprolol Succinate | 274 | 65 |
| Levothyroxine Sodium | 237 | 55 |
| Metformin Hcl | 216 | 55 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,247 across 63 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2012-07-05
Frequently asked questions
- What is Richard Shimizu's NPI number?
- Richard Shimizu's National Provider Identifier (NPI) is 1164466645, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Shimizu's specialty?
- Richard Shimizu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Shimizu located?
- Richard Shimizu's practice location on file with NPPES is 1001 E Primrose St, Springfield, MO 65807-5155.
- What is Richard Shimizu's phone number?
- The practice phone number listed in the NPPES registry for Richard Shimizu is (417) 875-3000.
- Does Richard Shimizu accept Medicare?
- Richard Shimizu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Shimizu's NPI active?
- Yes — Richard Shimizu's NPI (1164466645) is active in the NPPES registry as of the last update on 2012-07-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.