Dr. Ulaganathan Natarajan, MD, MPH
- Medicare services, 2024
- 138
- Medicare patients, 2024
- 63
- Part D claims, 2024
- 719
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 10180 Se Sunnyside Road, Clackamas, OR 97015
- Practice phone
- Call (503) 652-2880
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Natarajan'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. Ulaganathan Natarajan is an internist in Clackamas, Oregon
Dr. Natarajan practices at Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon, part of Kaiser Permanente.
Dr. Natarajan's NPI, 1407437007, was assigned on April 16, 2021. Dr. Natarajan holds Oregon license MD219411.
- NPI
- 1407437007NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618414806
- NPI enumeration date
- April 16, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 652-2880
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ulaganathan Natarajan practices at Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon
Dr. Natarajan's primary practice is Kaiser Permanente Sunnyside Medical Center, at 10180 Se Sunnyside Road, Clackamas, OR 97015 in Clackamas County. The practice phone is (503) 652-2880.
- Kaiser Permanente Sunnyside Medical Center10180 Se Sunnyside Road, Clackamas, OR 97015 · Clackamas CountyPhone(503) 652-2880
Source: Dmand AI Affiliation Data
Dr. Ulaganathan Natarajan is affiliated with 2 sites of care and 2 medical groups
Dr. Natarajan's primary practice is Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon, part of Kaiser Permanente. Dr. Natarajan is also affiliated with Providence Portland Medical Center. The medical group on file is Providence Medical Group, Oregon. Dmand AI also links Dr. Natarajan to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ulaganathan Natarajan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Natarajan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente Sunnyside Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ulaganathan Natarajan is one of 1,680 internists in Oregon
Internal medicine is Dr. Natarajan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Natarajan is licensed in Oregon.
Specialties and state licenses
- Internal medicine, OregonPrimary
Internists near Dr. Natarajan
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. Ulaganathan Natarajan billed Medicare for 138 services in 2024
CMS data shows 138 Medicare services from Dr. Natarajan across 3 procedure codes in 2024, for 63 Medicare patients. Medicare paid $13,693 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Natarajan compared with the Oregon median for internists, 2024
- Dr. Natarajan
- Oregon median
- Medicare services
- 138vs 30054% below
- Medicare patients
- 63vs 13252% below
- Part D claims
- 384vs 22273% above
Medians across 1,791 internists in Oregon with Dmand AI profiles that report each measure.
Dr. Natarajan'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.
Need commercial claims for Dr. Natarajan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Natarajan and other internists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ulaganathan Natarajan treated 63 Medicare patients in 2024, average age 71
CMS counts 63 Medicare patients who saw Dr. Natarajan in 2024. The largest group is 65 to 74, with 27 patients. 75% of them have high blood pressure, and 67% have high cholesterol. 43% are also on Medicaid. Their average risk score is 2.30, 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. Natarajan's median patient age at 71, with 52% women.
Dr. Natarajan's Medicare patients by age, 2024
Dr. Natarajan's Medicare patients by sex, 2024
- Women3860%
- Men2540%
Chronic conditions among Dr. Natarajan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol67%
- Diabetes56%
- Mood disorders54%
- Depression49%
- Arthritis46%
- Anxiety41%
- Heart failure41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Natarajan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ulaganathan Natarajan wrote 719 Medicare Part D claims in 2024
In 2024, Dr. Natarajan wrote 719 Medicare Part D claims for 102 patients. 83% of them were for generic drugs. CMS names the drug for 384 of them, across 14 drugs with 11 or more claims each, at $20,569 in total drug cost. In 2023, CMS named 691 claims across 29 drugs.
Dr. Natarajan's Part D claims by kind of drug, 2024
- Generic596 claims83%
- Brand-name112 claims16%
- Other11 claims2%
Dr. Natarajan'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. Natarajan's Part D claims, 2024
- Opioids3%22 of 719 claims
- Antibiotics2%14 of 719 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: 6912024: 38444%
Drugs named by CMS: 14 in 2024, 29 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. Ulaganathan Natarajan takes part in Medicare
Dr. Natarajan 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. Ulaganathan Natarajan has 1 publication on record
Dmand AI links 1 paper to Dr. Natarajan in 2023.
Recent publications by Dr. Natarajan
See who Dr. Natarajan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Natarajan works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ulaganathan Natarajan received $197 in industry payments from 2022 to 2024
CMS Open Payments shows 2 general payments to Dr. Natarajan from 2 drug and device companies from 2022 to 2024. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $181.
General payments to Dr. Natarajan by program year, 2022 to 2024
Companies that paid Dr. Natarajan the most, 2022 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ulaganathan Natarajan'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) |
| 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) |
| 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) |
| 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. Ulaganathan Natarajan
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. Ulaganathan Natarajan's NPI number?
Dr. Ulaganathan Natarajan's NPI number is 1407437007. It was assigned on April 16, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Ulaganathan Natarajan?
Dr. Ulaganathan Natarajan is an internist in Clackamas, Oregon. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ulaganathan Natarajan practice?
Dr. Natarajan practices at 10180 Se Sunnyside Road, Clackamas, OR 97015. Dr. Natarajan's primary practice is Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon, part of Kaiser Permanente. Dmand AI also links Dr. Natarajan to 1 medical group.
What is Dr. Ulaganathan Natarajan's office phone number?
The practice phone on file for Dr. Natarajan is (503) 652-2880.
What is Dr. Ulaganathan Natarajan's medical license number?
Dr. Natarajan holds Oregon license MD219411.
Which hospitals is Dr. Ulaganathan Natarajan affiliated with?
Dr. Natarajan practices at Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon. Dr. Natarajan is also affiliated with Providence Portland Medical Center.
What medical group is Dr. Ulaganathan Natarajan part of?
Dr. Natarajan is linked to Providence Medical Group, Oregon. Dmand AI links Dr. Natarajan to 1 more medical group.
Does Dr. Ulaganathan Natarajan accept Medicare?
Yes. CMS data shows Dr. Natarajan billed Medicare for 138 services in 2024, and Dr. Natarajan accepts Medicare assignment.
How many Medicare patients does Dr. Ulaganathan Natarajan see?
CMS counts 63 Medicare patients who saw Dr. Natarajan in 2024, with an average age of 71.
What services does Dr. Ulaganathan Natarajan bill to Medicare?
In 2024, Dr. Natarajan's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
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What drugs does Dr. Ulaganathan Natarajan prescribe most?
In 2024 Medicare Part D data, Dr. Natarajan's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
Has Dr. Ulaganathan Natarajan received payments from drug or device companies?
CMS Open Payments shows $197 in general payments to Dr. Natarajan from 2 companies from 2022 to 2024. The largest total came from Inari Medical, Inc.
How long has Dr. Ulaganathan Natarajan been practicing?
Dr. Natarajan graduated from medical school in 2013, 13 years ago.
Does Dr. Ulaganathan Natarajan do research?
Dmand AI links 1 publication to Dr. Natarajan.
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