Marcia Tonnesen, M.D.
Dermatology Physician · East Setauket, NY
Marcia Tonnesen, M.D. is a dermatology physician with a practice address in East Setauket, New York, and NPI 1205883238, issued on May 27, 2006. Check the license (New York 181378, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Marcia Tonnesen
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 181378 NY
Self-reported in NPPES; status is on the state search - Practice location
- 181 N Belle Mead RD, East Setauket, NY 11733
- Phone
- (631) 444-4200
- Enumerated
- May 27, 2006
- Record last updated
- Jul 13, 2026
- Medicaid ID
- 01198109 NY
- Medicare enrollment
- Enrolled (PECOS I20100716000019); may accept Medicare assignment
- Medical or professional school
- University Of Utah School Of Medicine, 1973
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 1,211 in New York → Look up another NPI →
Also registered at 181 N Belle Mead RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lovedhi Aggarwal, MDGeriatric Medicine (Family Medicine) Physician1760668933
- Hrisanti Arcan, RDRegistered Dietitian1619409646
- Sheryll Ann Baltazar, NP-CAdult Health Nurse Practitioner1184162620
- Joseph Cirrone, MDRadiation Oncology Physician1023013117
- Richard Clark, M.D.Dermatology Physician1700825429
- Josephine Connolly-Schoonen, R.D.Registered Dietitian1265476204
Verify Marcia Tonnesen 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 181378Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 98.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Marcia Tonnesen among 1,211 dermatology physician records in New York
Marcia Tonnesen, M.D. is one of 1,211 dermatology physician records with a practice address in New York. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1973 · median 2004 among the 880 with a school on file
- Record last updated2026 · 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 207N00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in New York
There are 1,211 dermatology physician records in New York.
All 1,211 in New York → Every provider in East Setauket → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Richard Clark, M.D.East Setauket, NY 117331700825429
- Tara Kaufmann, M.D.East Setauket, NY 117331811994627
- Robert Levine, DOEast Setauket, NY 117331700837234
- Daniel Lozeau, MDE Setauket, NY 117331598081721
- Richard Miller, M.D.Setauket, NY 117331023046935
- Ronny Herskovits, MDDeer Park, NY 117291851463145
- Mathew Birnbaum, MDGreenlawn, NY 117401306334388
- Alyssa BrennanCommack, NY 117251487254090
Common questions
What is Marcia Tonnesen, M.D.'s NPI number?
Marcia Tonnesen, M.D.'s National Provider Identifier (NPI) is 1205883238, issued on May 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marcia Tonnesen, M.D. located?
The NPPES record lists a practice address at 181 N Belle Mead RD, East Setauket, NY, 11733. Phone: (631) 444-4200. Providers update this record themselves, so call before visiting.
How can I verify Marcia Tonnesen, M.D.'s license?
NPPES lists New York license number 181378, 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.
What is Marcia Tonnesen, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.