Calvin Ma, MD
NPI 1467646026 · Diagnostic Radiology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Calvin Ma, MD is a Diagnostic Radiology Physician provider in Sacramento, CA (NPI 1467646026).
Provider details
- NPI number
- 1467646026
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A111193 (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 tenure28% of score
18 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
4,783 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 716 | $9 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 407 | $88 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 235 | $84 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 229 | $86 |
| Mri Scan of Leg Joint Without Contrast73721 | 226 | $218 |
| X-Ray of Chest, 2 Views71046 | 195 | $11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-08-28
- Last updated
- 2018-09-14
Frequently asked questions
- What is Calvin Ma's NPI number?
- Calvin Ma's National Provider Identifier (NPI) is 1467646026, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Calvin Ma's specialty?
- Calvin Ma is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Calvin Ma located?
- Calvin Ma's practice location on file with NPPES is 3161 L St, Sacramento, CA 95816-5234.
- What is Calvin Ma's phone number?
- The practice phone number listed in the NPPES registry for Calvin Ma is (916) 646-8401.
- Does Calvin Ma accept Medicare?
- Calvin Ma is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Calvin Ma's NPI active?
- Yes — Calvin Ma's NPI (1467646026) is active in the NPPES registry as of the last update on 2018-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.