Janaki S. Fonseka, MD
Hospitalist Physician · Dover, NH
Janaki S. Fonseka, MD is a hospitalist physician with a practice address in Dover, New Hampshire, and NPI 1063694438, issued on Nov 28, 2007. Check the license (New Hampshire 16006, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Janaki S. Fonseka
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 16006 NH
Self-reported in NPPES; status is on the state search - Practice location
- 789 Central Ave, Dover, NH 03820
- Phone
- (603) 740-2503
- Enumerated
- Nov 28, 2007
- Record last updated
- Feb 20, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (603) 740-2497
- Medicaid IDs
- 3081217 NH
1063694438 ME - Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 132 in New Hampshire → Look up another NPI →
Also registered at 789 Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Cathleen Ammann, MDHospitalist Physician1821179540
- Patricia Auty, MDSurgery Physician1407073794
- Glenn Bacon, DOAnesthesiology Physician1780662262
Verify Janaki S. Fonseka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 16006Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.7 times the Medicare Part D claims of the average hospitalist physician in 2024
2,965 Medicare Part D claims for 115 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 34 claims were for opioids.
Most prescribed
- Atorvastatin Calcium199 claims
- Levothyroxine Sodium120 claims
- Omeprazole108 claims
- Metoprolol Succinate104 claims
- Gabapentin93 claims
- Furosemide83 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.
Janaki S. Fonseka among 132 hospitalist physician records in New Hampshire
Janaki S. Fonseka, MD is one of 132 hospitalist physician records with a practice address in New Hampshire. 94% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 32% of them.
- NPI issued2007 · 32% of these records are older, 51% newer
- In a Medicare fileYes · 94% of these records are
- In the CMS Doctors and Clinicians fileNo · 86% of these records are
- Record last updated2014 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 hospitalist physician records list a practice address in Dover
They are 24 of the 1,266 NPPES records with a practice address in Dover, and 132 hospitalist physician records in New Hampshire.
All 132 in New Hampshire → Every provider in Dover → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Sarah Almas, MDDover, NH 038201497952394
- Cathleen Ammann, MDDover, NH 038201821179540
- Dragos Ceamitru, MDDover, NH 038201679502850
- Alison Clark, MDDover, NH 038201205820248
- Erwin Kurt Cullamar, MDDover, NH 038201982605200
- Ghaleb Karouni, MDDover, NH 038201326090283
- Yana Melnikova, MDDover, NH 038201619985405
- Robert Milhauser, MDDover, NH 038201285819045
Common questions
What is Janaki S. Fonseka, MD's NPI number?
Janaki S. Fonseka, MD's National Provider Identifier (NPI) is 1063694438, issued on Nov 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Janaki S. Fonseka, MD located?
The NPPES record lists a practice address at 789 Central Ave, Dover, NH, 03820. Phone: (603) 740-2503. Providers update this record themselves, so call before visiting.
How can I verify Janaki S. Fonseka, MD's license?
NPPES lists New Hampshire license number 16006, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Janaki S. Fonseka, MD prescribe under Medicare Part D?
In 2024, Janaki S. Fonseka, MD had 2,965 Medicare Part D claims for 115 beneficiaries; the average among hospitalist physician prescribers was 521. 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.