Matthew Nilsson, MD
NPI 1881048502 · Child & Adolescent Psychiatry Physician · Portland, ME
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Nilsson, MD is a Child & Adolescent Psychiatry Physician provider in Portland, ME (NPI 1881048502).
Provider details
- NPI number
- 1881048502
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD24084 (ME)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (3)
- 66 Bramhall StPortland, ME 04102-3344Phone: (207) 662-2160Fax: (207) 662-6348
- 22 Bramhall StPortland, ME 04102-3134Phone: (781) 526-1317
- 123 Andover RdWestbrook, ME 04092-3848Phone: (207) 761-2200Fax: (207) 761-2108
Registry dates
- Enumerated
- 2016-04-19
- Last updated
- 2025-03-20
- Certified
- 2025-03-20
Frequently asked questions
- What is Matthew Nilsson's NPI number?
- Matthew Nilsson's National Provider Identifier (NPI) is 1881048502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Nilsson's specialty?
- Matthew Nilsson is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Nilsson located?
- Matthew Nilsson's practice location on file with NPPES is 37 Andover Rd, Portland, ME 04102-1936.
- What is Matthew Nilsson's phone number?
- The practice phone number listed in the NPPES registry for Matthew Nilsson is (207) 661-3600.
- Does Matthew Nilsson accept Medicare?
- Matthew Nilsson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Nilsson's NPI active?
- Yes — Matthew Nilsson's NPI (1881048502) is active in the NPPES registry as of the last update on 2025-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.