Michael Kobayashi, MD
NPI 1831317684 · Diagnostic Radiology Physician · Stockton, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Kobayashi, MD is a Diagnostic Radiology Physician provider in Stockton, CA (NPI 1831317684).
Provider details
- NPI number
- 1831317684
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A99348 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
593 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Mri Scan of Leg Joint Without Contrast73721 | 85 | $207 |
| Mri Scan of Arm Joint Without Contrast73221 | 74 | $224 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 71 | $201 |
| X-Ray of Foot, Minimum of 3 Views73630 | 70 | $37 |
| X-Ray of Knee, 3 Views73562 | 57 | $44 |
| X-Ray of Hand, Minimum of 3 Views73130 | 42 | $41 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-24
- Last updated
- 2011-07-18
Frequently asked questions
- What is Michael Kobayashi's NPI number?
- Michael Kobayashi's National Provider Identifier (NPI) is 1831317684, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Kobayashi's specialty?
- Michael Kobayashi is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Kobayashi located?
- Michael Kobayashi's practice location on file with NPPES is 1801 E March Ln, Stockton, CA 95210-6629.
- What is Michael Kobayashi's phone number?
- The practice phone number listed in the NPPES registry for Michael Kobayashi is (209) 475-9871.
- Does Michael Kobayashi accept Medicare?
- Michael Kobayashi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Kobayashi's NPI active?
- Yes — Michael Kobayashi's NPI (1831317684) is active in the NPPES registry as of the last update on 2011-07-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.