Janika Camilla Kemppainen, MD
Internal Medicine Physician · Stony Brook, NY
Janika Camilla Kemppainen, MD is an internal medicine physician with a practice address in Stony Brook, New York, and NPI 1922740059, issued on Apr 9, 2022. Check the license (New York 337611, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Janika Camilla Kemppainen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 337611 NY
Self-reported in NPPES; status is on the state search - Practice location
- 101 Nicolls RD, Stony Brook, NY 11794
- Phone
- (631) 689-8333
- Enumerated
- Apr 9, 2022
- Record last updated
- Jun 22, 2025
- Medicare enrollment
- Enrolled (PECOS I20250926001030); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 101 Nicolls RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Janika Camilla Kemppainen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 337611Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
218 Medicare Part D claims for 64 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium22 claims
- Amlodipine Besylate11 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
- Stony Brook Internists University Faculty Practice CorporationStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Janika Camilla Kemppainen among 12,067 internal medicine physician records in New York
Janika Camilla Kemppainen, MD is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2022 · median 2002 among the 7,221 with a school on file
- Record last updated2025 · 61% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
121 internal medicine physician records list a practice address in Stony Brook
They are 121 of the 3,053 NPPES records with a practice address in Stony Brook, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Stony Brook → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Abdullah, M.D.Stony Brook, NY 117941700079100
- Patricia Boromee, MDStony Brook, NY 117941982700993
- Roderick Go, DOStony Brook, NY 117941558486555
- Lynn Hallarman, M.D.Stony Brook, NY 117941689778078
- Jennifer Hensley, M.D.Stony Brook, NY 117941881702124
- Kyung Ho Kim, MDStony Brook, NY 117941063687929
- Olena Ksovreli, M.D.Stony Brook, NY 117941821063041
- Patrick Lynch, MDStony Brook, NY 117941841495256
Common questions
What is Janika Camilla Kemppainen, MD's NPI number?
Janika Camilla Kemppainen, MD's National Provider Identifier (NPI) is 1922740059, issued on Apr 9, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Janika Camilla Kemppainen, MD located?
The NPPES record lists a practice address at 101 Nicolls RD, Stony Brook, NY, 11794. Phone: (631) 689-8333. Providers update this record themselves, so call before visiting.
How can I verify Janika Camilla Kemppainen, MD's license?
NPPES lists New York license number 337611, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Janika Camilla Kemppainen, MD prescribe under Medicare Part D?
In 2024, Janika Camilla Kemppainen, MD had 218 Medicare Part D claims for 64 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.