NPPES file of Aug 9, 2026

Matthew E. Nilsson, MD

Child & Adolescent Psychiatry Physician · Portland, ME

Matthew E. Nilsson, MD is a child & adolescent psychiatry physician with a practice address in Portland, Maine, and NPI 1881048502, issued on Apr 19, 2016. Check the license (Maine MD24084, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1881048502
Name
Matthew E. Nilsson
Credential
MD
Primary taxonomy
Child & Adolescent Psychiatry Physician 2084P0804X
License number
MD24084 ME
Self-reported in NPPES; status is on the state search
Practice location
37 Andover RD, Portland, ME 04102
Phone
(207) 661-3600
Enumerated
Apr 19, 2016
Record last updated
Mar 20, 2025
Fax
(207) 761-0783
Medicare enrollment
Enrolled (PECOS I20210819001123); accepts Medicare assignment
Medical or professional school
Tufts University School Of Medicine, 2016
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 37 Andover RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Peri AkchurinChild & Adolescent Psychiatry Physician1508359910
  2. Carissa Cavallaro, LCSWClinical Social Worker1033673645
  3. Winston Chung, M.D.Psychiatry Physician1881960417
  4. Miles Cleary, LCSWClinical Social Worker1508222951
  5. Hailey DavisOccupational Therapist1942705686
  6. Angela Evans, BCBABehavior Analyst1538971759

Verify Matthew E. Nilsson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
    Search for license MD24084
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Maine license search

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95% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024

23 Medicare Part D claims, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D.

  1. Matthew Nilsson23
  2. Specialty average504

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.

The MIPS final score for 2023 (Medicare payment program): 98.1 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.

  1. Qualityout of 100 · 30% of the final score86.1
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. MainehealthPortland, ME

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Matthew E. Nilsson among 58 child & adolescent psychiatry physician records in Maine

Matthew E. Nilsson, MD is one of 58 child & adolescent psychiatry physician records with a practice address in Maine. 62% 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 81% of them.

  • NPI issued2016 · 81% of these records are older, 16% newer
  • In a Medicare fileYes · 62% of these records are
  • In the CMS Doctors and Clinicians fileYes · 45% of these records are
  • Graduated2016 · median 2009 among the 26 with a school on file
  • Record last updated2025 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Child & Adolescent Psychiatry Physician providers in Maine

There are 58 child & adolescent psychiatry physician records in Maine.

The 8 child & adolescent psychiatry physician records with the nearest ZIP codes

  1. Peri AkchurinPortland, ME 041021508359910
  2. Erin Belfort, MDPortland, ME 041021700964749
  3. Edward Bender, DOPortland, ME 041021477876670
  4. Amy Mayhew, MDPortland, ME 041021831336064
  5. Joshua Moss, MDPortland, ME 041021225597164
  6. Brenden Myers, DOPortland, ME 041021922504919
  7. Danielle Sipsock, M.D.Portland, ME 041021811300965
  8. Katie-Joy Zimmerman-Winslow, DOPortland, ME 041021902367261

Common questions

What is Matthew E. Nilsson, MD's NPI number?

Matthew E. Nilsson, MD's National Provider Identifier (NPI) is 1881048502, issued on Apr 19, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Matthew E. Nilsson, MD located?

The NPPES record lists a practice address at 37 Andover RD, Portland, ME, 04102. Phone: (207) 661-3600. Providers update this record themselves, so call before visiting.

How can I verify Matthew E. Nilsson, MD's license?

NPPES lists Maine license number MD24084, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Matthew E. Nilsson, MD prescribe under Medicare Part D?

In 2024, Matthew E. Nilsson, MD had 23 Medicare Part D claims; the average among child & adolescent psychiatry physician prescribers was 504. Part D covers Medicare prescriptions only.

What is Matthew E. Nilsson, MD's MIPS final score?

The 2023 MIPS final score is 98.1 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.