MATTHEW E NILSSON (MD) – Child & Adolescent Psychiatry Physician, NPI 1881048502
Child & Adolescent Psychiatry Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
202 PSYCHIATRY in ME
Provider Addresses for MATTHEW E NILSSON (MD)
MMC OP C&A PSYCHIATRY
66 BRAMHALL STREET
PORTLAND, ME 041023134
Phone: (207) 662-2160
Fax: (207) 662-6348
Type: Mailing
66 BRAMHALL ST
PORTLAND, ME 041023344
Phone: (207) 662-2160
Fax: (207) 662-6348
Type: Location
37 ANDOVER RD
PORTLAND, ME 041021936
Phone: (207) 661-3600
Fax: (207) 761-0783
Type: Mailing
66 Bramhall St
Portland, ME 041023344
Phone: (207) 662-2160
Fax: (207) 662-6348
Type: Location
22 Bramhall St
Portland, ME 041023134
Phone: (781) 526-1317
Type: Location
123 Andover Rd
Westbrook, ME 040923848
Phone: (207) 761-2200
Fax: (207) 761-2108
Type: Location
Maine Medical Center, 22, Bramhall Street, West End, Portland, Cumberland County, Maine, 04102, United States
PORTLAND, ME 041023134
Phone:
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
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Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2021-08-19
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20210819001123 | I | Psychiatry | ME | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 04102)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | PA | |
| - | ME | |
| - | ME | |
| - | ME | |
| - | ME | |
| Family Practice, Hospice/Palliative Care | ME | |
| Pediatric Medicine, Endocrinology | MA | |
| - | ME | |
| Family Practice | ME | |
| Nurse Practitioner | ME |
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