Dr. Nandinidevi Ramaswamy, MD
- Medicare services, 2022
- 41
- Part D claims, 2024
- 2,542
- Hospital affiliations
- 1
- Industry payments
- $760
- Medical groups
- 2
- Practice address
- 2103 E Gonzales Rd, Oxnard, CA 93036
- Practice phone
- Call (805) 650-4700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Southern California Permanente Medical Group
Oxnard, California
Find Dr. Ramaswamy'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. Nandinidevi Ramaswamy is an internist in Oxnard, California
Dr. Ramaswamy practices at Southern California Permanente Medical Group in Oxnard, California.
Dr. Ramaswamy's NPI, 1245613348, was assigned on July 7, 2015. Dr. Ramaswamy graduated from Rural Medical College Pravara Institute of Medical Sciences in 2013. Dr. Ramaswamy's California license number on file is 153224.
- NPI
- 1245613348NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729334958
- NPI enumeration date
- July 7, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 650-4700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nandinidevi Ramaswamy practices at Southern California Permanente Medical Group in Oxnard, California
Dr. Ramaswamy's primary practice is Southern California Permanente Medical Group, at 2103 E Gonzales Rd, Oxnard, CA 93036 in Ventura County. The practice phone is (805) 650-4700.
- Southern California Permanente Medical Group2103 E Gonzales Rd, Oxnard, CA 93036 · Ventura CountyPhone(805) 650-4700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Nandinidevi Ramaswamy is affiliated with 4 sites of care and 2 medical groups
Dr. Ramaswamy's primary practice is Southern California Permanente Medical Group in Oxnard, California. Dr. Ramaswamy is also affiliated with Kaiser Permanente Woodland Hills Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Ramaswamy to 1 more community health center, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Nandinidevi Ramaswamy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ramaswamy practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southern California Permanente Medical Group | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nandinidevi Ramaswamy is one of 16,751 internists in California
Internal medicine is Dr. Ramaswamy's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ramaswamy is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Ramaswamy's licenses on file in 2 states: California and Rhode Island.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Rhode Island license
Clinical focus
Dmand AI lists chronic diabetes, diabetic emergency and menopause among the conditions Dr. Ramaswamy treats.
Internists near Dr. Ramaswamy
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Nandinidevi Ramaswamy billed Medicare for 41 services in 2022
CMS data shows 41 Medicare services from Dr. Ramaswamy across 1 procedure code in 2022. Medicare paid $393 for them. Every service was in an office.
Dr. Ramaswamy's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Lab and pathology
- 2021: 412022: 41No change
- Tests and treatments
- 2021: 142022: 0100%
Dr. Ramaswamy compared with the California median for internists, 2022
- Dr. Ramaswamy
- California median
- Medicare services
- 41vs 36189% below
- Part D claims
- 2,080vs 4214.9 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Ramaswamy's most billed Medicare procedure codes, 2022
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. Ramaswamy and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nandinidevi Ramaswamy's patients have a median age of 54
Across all payers, Dmand AI patient panel data puts Dr. Ramaswamy's median patient age at 54, with 69% women.
Dr. Ramaswamy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women69%
- Men31%
Source: Dmand AI Patient Panel Data
Dr. Nandinidevi Ramaswamy wrote 2,542 Medicare Part D claims in 2024
In 2024, Dr. Ramaswamy wrote 2,542 Medicare Part D claims for 560 patients. 89% of them were for generic drugs. CMS names the drug for 2,080 of them, across 60 drugs with 11 or more claims each, at $46,683 in total drug cost. In 2023, CMS named 1,892 claims across 51 drugs.
Dr. Ramaswamy's Part D claims by kind of drug, 2024
- Generic2,272 claims89%
- Brand-name250 claims10%
- Other20 claims1%
Dr. Ramaswamy's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ramaswamy's Part D claims, 2024
- Opioids1%33 of 2,542 claims
- Antibiotics7%181 of 2,542 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,8922024: 2,08010%
Drugs named by CMS: 60 in 2024, 51 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Nandinidevi Ramaswamy takes part in Medicare
Dr. Ramaswamy accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Nandinidevi Ramaswamy received $760 in industry payments from 2016 to 2022
CMS Open Payments shows 23 general payments to Dr. Ramaswamy from 11 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $224.
General payments to Dr. Ramaswamy by program year, 2016 to 2022
Companies that paid Dr. Ramaswamy the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nandinidevi Ramaswamy graduated from Rural Medical College Pravara Institute of Medical Sciences
Dr. Ramaswamy graduated from Rural Medical College Pravara Institute of Medical Sciences in 2013.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Nandinidevi Ramaswamy accepts plans from 8 insurance carriers
Dr. Ramaswamy is in network with 8 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Kaiser Permanente. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- Kaiser Permanente
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- RI State Medicaid
Plan types Dr. Ramaswamy accepts, by number of carriers
- Medicare6
- PPO5
- HMO3
- POS3
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Nandinidevi Ramaswamy'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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) |
| 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. Nandinidevi Ramaswamy
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. Nandinidevi Ramaswamy's NPI number?
Dr. Nandinidevi Ramaswamy's NPI number is 1245613348. It was assigned on July 7, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Nandinidevi Ramaswamy?
Dr. Nandinidevi Ramaswamy is an internist in Oxnard, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Nandinidevi Ramaswamy practice?
Dr. Ramaswamy practices at 2103 E Gonzales Rd, Oxnard, CA 93036. Dr. Ramaswamy's primary practice is Southern California Permanente Medical Group in Oxnard, California. Dmand AI also links Dr. Ramaswamy to 1 community health center, 1 group practice or clinic and 1 medical group.
What is Dr. Nandinidevi Ramaswamy's office phone number?
The practice phone on file for Dr. Ramaswamy is (805) 650-4700.
What is Dr. Nandinidevi Ramaswamy's medical license number?
Dr. Ramaswamy's California license number on file is 153224, one of the licenses on file in 2 states.
Which states has Dr. Nandinidevi Ramaswamy been licensed in?
Dmand AI has state licenses on file for Dr. Ramaswamy in California (2017 to 2025) and Rhode Island (2015 to 2018).
Which hospitals is Dr. Nandinidevi Ramaswamy affiliated with?
Dr. Ramaswamy is affiliated with Kaiser Permanente Woodland Hills Medical Center.
What medical group is Dr. Nandinidevi Ramaswamy part of?
Dr. Ramaswamy is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Ramaswamy to 1 more medical group.
Does Dr. Nandinidevi Ramaswamy accept Medicare?
Yes. CMS data shows Dr. Ramaswamy billed Medicare for 41 services in 2022, and Dr. Ramaswamy accepts Medicare assignment.
Is Dr. Nandinidevi Ramaswamy board certified?
Yes. Dr. Ramaswamy is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Nandinidevi Ramaswamy bill to Medicare?
In 2022, Dr. Ramaswamy's most billed Medicare services were lab and pathology test (83036).
Where did Dr. Nandinidevi Ramaswamy go to medical school?
Dr. Ramaswamy graduated from Rural Medical College Pravara Institute of Medical Sciences in 2013.
What drugs does Dr. Nandinidevi Ramaswamy prescribe most?
In 2024 Medicare Part D data, Dr. Ramaswamy's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Amlodipine Besylate.
Has Dr. Nandinidevi Ramaswamy received payments from drug or device companies?
CMS Open Payments shows $760 in general payments to Dr. Ramaswamy from 11 companies from 2016 to 2022. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Nandinidevi Ramaswamy been practicing?
Dr. Ramaswamy graduated from medical school in 2013, 13 years ago.
What insurance does Dr. Nandinidevi Ramaswamy accept?
Dr. Ramaswamy is in network with 8 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Kaiser Permanente. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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