Nataraj Shanmugam, M.D.
NPI 1659535102 · Diagnostic Radiology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nataraj Shanmugam, M.D. is a Diagnostic Radiology Physician provider in Sacramento, CA (NPI 1659535102).
Provider details
- NPI number
- 1659535102
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A115371 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 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
6,915 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 918 | $9 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect78452 | 369 | $80 |
| Ct Scan Head Or Brain Without Contrast70450 | 336 | $41 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 214 | $40 |
| X-Ray of Hip, 2-3 Views73502 | 214 | $54 |
| X-Ray of Foot, Minimum of 3 Views73630 | 192 | $38 |
| X-Ray of Knee, 4 Or More Views73564 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (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
- 2008-07-14
- Last updated
- 2020-02-11
- Certified
- 2020-02-11
Frequently asked questions
- What is Nataraj Shanmugam's NPI number?
- Nataraj Shanmugam's National Provider Identifier (NPI) is 1659535102, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nataraj Shanmugam's specialty?
- Nataraj Shanmugam is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Nataraj Shanmugam located?
- Nataraj Shanmugam's practice location on file with NPPES is 3000 Q St Fl 1, Sacramento, CA 95816-7058.
- What is Nataraj Shanmugam's phone number?
- The practice phone number listed in the NPPES registry for Nataraj Shanmugam is (916) 733-3301.
- Does Nataraj Shanmugam accept Medicare?
- Nataraj Shanmugam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nataraj Shanmugam's NPI active?
- Yes — Nataraj Shanmugam's NPI (1659535102) is active in the NPPES registry as of the last update on 2020-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.