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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARCIA TONNESEN M.D.
NPI 1205883238
Dermatology in East Setauket, NY

Active since May 27, 2006PECOS Enrolled
98.52/100
CMS Quality Rating
181 N BELLE MEAD RD, EAST SETAUKET, NY 11733(631) 444-4200 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Marcia Tonnesen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARCIA TONNESEN M.D. (NPI 1205883238) is an individual dermatology provider in East Setauket, New York, licensed in New York (181378) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Utah School Of Medicine (1973).

NPPES Registry Identity

NPI1205883238
Entity TypeIndividualFemale
Primary Taxonomy207N00000X
Provider Legal NameDR. MARCIA TONNESENCredential: M.D.
Location Address181 N BELLE MEAD RDEast Setauket, NY 11733-3495
Mailing AddressPo Box 1559Stony Brook, NY 11790-0989 · (631) 444-4200
Phone(631) 444-4200
Sole ProprietorNo
Medical School CMSUniversity Of Utah School Of MedicineGraduated 1973
Enumeration DateMay 27, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1205883238 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
License✔ Licensed in NY · 181378
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
181 N BELLE MEAD RD, East Setauket, NY 11733
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Other Identifiers 3

Other5030064NY · Aetna
Other61F93NY · Empire Bc/bs
Medicaid01198109NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Marcia Tonnesen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5597897231
PECOS Enrollment IDI20100716000019
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Therapy procedure using ultraviolet radiation with tar or petroleum jelly application 96910
This therapy involves applying tar or petroleum jelly on the skin, followed by exposure to ultraviolet radiation. It helps in treating skin conditions by slowing cell growth and reducing inflammation. It's a safe, controlled process, often used for conditions like psoriasis.
185 services22 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
43 services24 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
16 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11733 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$83.44 typical visit price
range $21.66 – $164.45
Typical copayment $20.86 (range $5.41 – $41.11)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.52/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality82.85
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JOSEPH S CIRRONE MD
Radiology (Radiation Oncology)
181 N BELLE MEAD RD, SUITE 1
EAST SETAUKET, NY 11733
Suffolk County (631) 689-6776
MS. LORRAINE DANOWSKI R.D.
Dietitian, Registered
181 N BELLE MEAD RD
EAST SETAUKET, NY 11733
Suffolk County (111) 111-1111
DR. VIVICA VOLLMER M.D.
Family Medicine
181 N BELLE MEAD RD
EAST SETAUKET, NY 11733
Suffolk County (631) 444-5858
BEVERLY ANN DEAN NP
Nurse Practitioner (Family)
181 N BELLE MEAD RD, SUITE 2
EAST SETAUKET, NY 11733
Suffolk County (631) 444-5858
DR. DONNA MELTZER M.D.
Family Medicine
181 N BELLE MEAD RD
EAST SETAUKET, NY 11733
Suffolk County (631) 444-0624
DR. SUSAN DEBEVOISE D.O.
Family Medicine
181 N BELLE MEAD RD
EAST SETAUKET, NY 11733
Suffolk County (631) 444-0624
SHERYLL ANN POLLO BALTAZAR NP-C
Nurse Practitioner (Adult Health)
181 N BELLE MEAD RD
EAST SETAUKET, NY 11733
Suffolk County (631) 444-2599
NORTH SHORE HEMATOLOGY ONCOLOGY ASSOCIATES
Clinic/Center (Oncology, Radiation)
181 N BELLE MEAD RD
EAST SETAUKET, NY 11733
Suffolk County (631) 751-3000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marcia Tonnesen's NPI number?

The NPI number for Marcia Tonnesen is 1205883238. It was assigned to this individual provider in the NPPES registry on May 27, 2006.

Where is Marcia Tonnesen located?

Marcia Tonnesen practices at 181 N Belle Mead Rd, East Setauket, NY 11733. The listed phone number is (631) 444-4200.

What is Marcia Tonnesen's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Marcia Tonnesen enrolled in Medicare?

Yes. Marcia Tonnesen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Marcia Tonnesen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.