Kalaiselvi Balasubramanian Williams, MD, MPH
Internal Medicine Physician · Portland, OR
Kalaiselvi Balasubramanian Williams, MD, MPH is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1043768351, issued on Sep 15, 2016. Check the license (Oregon MD23938, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Kalaiselvi Balasubramanian Williams
- Credential
- MD, MPH
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD23938 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3181 SW Sam Jackson Park RD # L475, Portland, OR 97239
- Phone
- (503) 494-6551
- Enumerated
- Sep 15, 2016
- Record last updated
- May 12, 2022
- Fax
- (503) 494-0979
- Medicare enrollment
- Enrolled (PECOS I20200813002778); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 3181 SW Sam Jackson Park RD # L475
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kalaiselvi Balasubramanian Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD23938Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,612 Medicare Part D claims for 177 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 28 claims were for opioids.
Most prescribed
- Atorvastatin Calcium130 claims
- Amlodipine Besylate79 claims
- Lisinopril56 claims
- Losartan Potassium53 claims
- Metoprolol Succinate43 claims
- Rosuvastatin Calcium43 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- University Professional ServicesPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kalaiselvi Balasubramanian Williams among 2,116 internal medicine physician records in Oregon
Kalaiselvi Balasubramanian Williams, MD, MPH is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 78% of them.
- NPI issued2016 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2000 · median 2008 among the 1,232 with a school on file
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Anderson, M.D.Portland, OR 972391497786081
- Katherine Bensching, M.D.Portland, OR 972391407823867
- Clarisa Borrego, MDPortland, OR 972391912934514
- Ella BowmanPortland, OR 972391467436873
- Geoffery Clover, M.D.Portland, OR 972391972504314
- Paul Gorman, M.D.Portland, OR 972391326083742
- Joseph Hardman, M.D.Portland, OR 972391821044306
- Alan Hendin, MDPortland, OR 972391437127644
Common questions
What is Kalaiselvi Balasubramanian Williams, MD, MPH's NPI number?
Kalaiselvi Balasubramanian Williams, MD, MPH's National Provider Identifier (NPI) is 1043768351, issued on Sep 15, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Kalaiselvi Balasubramanian Williams, MD, MPH located?
The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD # L475, Portland, OR, 97239. Phone: (503) 494-6551. Providers update this record themselves, so call before visiting.
How can I verify Kalaiselvi Balasubramanian Williams, MD, MPH's license?
NPPES lists Oregon license number MD23938, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kalaiselvi Balasubramanian Williams, MD, MPH prescribe under Medicare Part D?
In 2024, Kalaiselvi Balasubramanian Williams, MD, MPH had 1,612 Medicare Part D claims for 177 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.