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Dr. Nataraj Shanmugam, MD
NPI1659535102PAC ID8628109378
- Medicare services, 2024
- 10,865
- Medicare patients, 2024
- 5,290
- Publications
- 6
- MIPS score, 2024
- 100
- Hospital affiliations
- 5
- Practice address
- 6501 Coyle Ave, Carmichael, CA 95608
- Practice phone
- Call (916) 537-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Shanmugam's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Nataraj Shanmugam is a diagnostic radiologist in Carmichael, California
Dr. Shanmugam practices at Dignity Health - Mercy San Juan Medical Center in Carmichael, California, part of CommonSpirit Health.
Dr. Shanmugam's NPI, 1659535102, was assigned on July 14, 2008. Dr. Shanmugam graduated from The Flinders University of South Australia School of Medicine in 2000. Dr. Shanmugam holds California license A115371.
NPI and contact details
- NPI
- 1659535102NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628109378
- NPI enumeration date
- July 14, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 537-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nataraj Shanmugam practices at Dignity Health - Mercy San Juan Medical Center in Carmichael, California
Dr. Shanmugam's primary practice is Dignity Health - Mercy San Juan Medical Center, at 6501 Coyle Ave, Carmichael, CA 95608 in Sacramento County. The practice phone is (916) 537-5000.
- Dignity Health - Mercy San Juan Medical Center6501 Coyle Ave, Carmichael, CA 95608 · Sacramento CountyPhone(916) 537-5000
Source: Dmand AI Affiliation Data
Dr. Nataraj Shanmugam is affiliated with 6 sites of care and 1 medical group
Dr. Shanmugam's primary practice is Dignity Health - Mercy San Juan Medical Center in Carmichael, California, part of CommonSpirit Health. Dr. Shanmugam is also affiliated with Dignity Health - Mercy General Hospital. The medical group on file is Mercy Medical Group. Dmand AI also links Dr. Shanmugam to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Dignity Health - Mercy General HospitalMercy Medical Group3 hospitalsNames with a free account1 group practice or clinicName with a free account
See all 7 affiliations for Dr. ShanmugamSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nataraj Shanmugam's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shanmugam practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - Mercy San Juan Medical Center | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nataraj Shanmugam is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Shanmugam's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Shanmugam is board certified in nuclear medicine by the American Board of Nuclear Medicine. Dmand AI has Dr. Shanmugam's licenses on file in 2 states: California and Arizona.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
- Arizona license
Diagnostic radiologists near Dr. Shanmugam
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
4,096diagnostic radiologists in California41diagnostic radiologists in Carmichael22diagnostic radiologists at Dignity Health - Mercy San Juan Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Nataraj Shanmugam billed Medicare for 10,865 services in 2024
CMS data shows 10,865 Medicare services from Dr. Shanmugam across 72 procedure codes in 2024, for 5,290 Medicare patients. Medicare paid $378,391 for them.
Medicare services, 202410,865
Medicare patients5,290
Paid by Medicare$378,391
Procedure codes72
Dr. Shanmugam's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 4,6212024: 6,59243%
- Other services
- 2023: 4,6762024: 4,04414%
- Tests and treatments
- 2023: 1812024: 22927%
Where Dr. Shanmugam's Medicare services took place, 2024
- In an office6,64461%
- In a facility4,22139%
Dr. Shanmugam compared with the California median for diagnostic radiologists, 2024
- Dr. Shanmugam
- California median
- Medicare services
- 10,865vs 2,2814.8 times
- Medicare patients
- 5,290vs 1,3463.9 times
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Shanmugam's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shanmugam and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nataraj Shanmugam treated 5,290 Medicare patients in 2024, average age 75
CMS counts 5,290 Medicare patients who saw Dr. Shanmugam in 2024. The largest group is 65 to 74, with 2,128 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 36% are also on Medicaid. Their average risk score is 1.63, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Shanmugam's median patient age at 60, with 54% women.
Medicare patients, 20245,290
Average age75
Average risk score1.63
Also on Medicaid36%
Dr. Shanmugam's Medicare patients by age, 2024
Dr. Shanmugam's Medicare patients by sex, 2024
- Women3,15060%
- Men2,14040%
Chronic conditions among Dr. Shanmugam's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Diabetes33%
- Mood disorders32%
- Ischemic heart disease31%
- Chronic kidney disease30%
- Anxiety29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Shanmugam's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nataraj Shanmugam scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Shanmugam for performance year 2024, reported through an alternative payment model (APM). Dr. Shanmugam accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Shanmugam's MIPS scores, performance year 2024
- 100of 100Final score
- 86.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Nataraj Shanmugam has 6 publications on record
Dmand AI links 6 papers to Dr. Shanmugam. Dr. Shanmugam's most frequent co-author is Jeffrey Michael Levsky, MD, PhD.
Papers6
Dr. Shanmugam's most frequent co-authors
Recent publications by Dr. Shanmugam
See who Dr. Shanmugam researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Shanmugam works with, so you can find a warm path to the right diagnostic radiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nataraj Shanmugam received $127 in industry payments from 2019 to 2024
CMS Open Payments shows 5 general payments to Dr. Shanmugam from 2 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. GE Healthcare paid the most, $73.
General payments to Dr. Shanmugam by program year, 2019 to 2024
Companies that paid Dr. Shanmugam the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nataraj Shanmugam graduated from The Flinders University of South Australia School of Medicine
Dr. Shanmugam graduated from The Flinders University of South Australia School of Medicine in 2000.
- Medical school
- Board certified in nuclear medicine
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Nataraj Shanmugam accepts plans from 13 insurance carriers
Dr. Shanmugam is in network with 13 carriers, including Excellus BlueCross BlueShield, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- United Healthcare
- Elevance
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Shanmugam accepts, by number of carriers
- PPO9
- HMO7
- EPO4
- Medicare4
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Nataraj Shanmugam's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Nataraj Shanmugam
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nataraj Shanmugam's NPI number?
Dr. Nataraj Shanmugam's NPI number is 1659535102. It was assigned on July 14, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Nataraj Shanmugam?
Dr. Nataraj Shanmugam is a diagnostic radiologist in Carmichael, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Nataraj Shanmugam practice?
Dr. Shanmugam practices at 6501 Coyle Ave, Carmichael, CA 95608. Dr. Shanmugam's primary practice is Dignity Health - Mercy San Juan Medical Center in Carmichael, California, part of CommonSpirit Health. Dmand AI also links Dr. Shanmugam to 3 hospitals and 1 group practice or clinic.
What is Dr. Nataraj Shanmugam's office phone number?
The practice phone on file for Dr. Shanmugam is (916) 537-5000.
What is Dr. Nataraj Shanmugam's medical license number?
Dr. Shanmugam holds California license A115371, one of the licenses on file in 2 states.
Which states has Dr. Nataraj Shanmugam been licensed in?
Dmand AI has state licenses on file for Dr. Shanmugam in California (2011 to 2026) and Arizona (2010 to 2013).
Which hospitals is Dr. Nataraj Shanmugam affiliated with?
Dr. Shanmugam practices at Dignity Health - Mercy San Juan Medical Center in Carmichael, California. Dr. Shanmugam is also affiliated with Dignity Health - Mercy General Hospital. Dmand AI links Dr. Shanmugam to 3 more hospitals.
What medical group is Dr. Nataraj Shanmugam part of?
Dr. Shanmugam is linked to Mercy Medical Group.
Does Dr. Nataraj Shanmugam accept Medicare?
Yes. CMS data shows Dr. Shanmugam billed Medicare for 10,865 services in 2024, and Dr. Shanmugam accepts Medicare assignment.
What is Dr. Nataraj Shanmugam's MIPS score?
Dr. Shanmugam's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Nataraj Shanmugam see?
CMS counts 5,290 Medicare patients who saw Dr. Shanmugam in 2024, with an average age of 75.
Is Dr. Nataraj Shanmugam board certified?
Yes. Dr. Shanmugam is board certified in nuclear medicine by the American Board of Nuclear Medicine.
What services does Dr. Nataraj Shanmugam bill to Medicare?
In 2024, Dr. Shanmugam's most billed Medicare services were medicare temporary code (Q9967), diagnostic imaging (71045) and diagnostic imaging (73502).
Where did Dr. Nataraj Shanmugam go to medical school?
Dr. Shanmugam graduated from The Flinders University of South Australia School of Medicine in 2000.
Has Dr. Nataraj Shanmugam received payments from drug or device companies?
CMS Open Payments shows $127 in general payments to Dr. Shanmugam from 2 companies from 2019 to 2024. The largest total came from GE Healthcare.
How long has Dr. Nataraj Shanmugam been practicing?
Dr. Shanmugam graduated from medical school in 2000, 26 years ago.
Does Dr. Nataraj Shanmugam do research?
Dmand AI links 6 publications to Dr. Shanmugam.
Who does Dr. Nataraj Shanmugam publish with?
Dr. Shanmugam's most frequent co-authors are Jeffrey Michael Levsky, MD, PhD (1 shared paper).
What insurance does Dr. Nataraj Shanmugam accept?
Dr. Shanmugam is in network with 13 carriers, including Excellus BlueCross BlueShield, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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