DR. ADAM O'BRIEN DO
NPI 1912380320
Anesthesiology in Portland, ME
About Dr. Adam O'brien Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ADAM O'BRIEN DO (NPI 1912380320) is an individual anesthesiology provider in Portland, Maine, licensed in Maine (DO2916) and active in the NPI registry since July 2015. He is enrolled in Medicare PECOS, is affiliated with Northern Light Health, and maintains a secondary practice location in South Portland.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Adam O'brien Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Adam O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Portland, ME 04102
- Reassigned Medicare billing, Maine enrollment
- Medicare enrollment name: Spectrum Healthcare Partners PA
- 148 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northern Light Health
Acute Care Hospitals · Portland, MEMaine Medical Center
Acute Care Hospitals · Portland, MEOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORTLAND, ME 04102
PORTLAND, ME 04102
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 Adam O'brien's NPI number?
The NPI number for Adam O'brien is 1912380320. It was assigned to this individual provider in the NPPES registry on July 2, 2015.
Where is Adam O'brien located?
Adam O'brien practices at 22 Bramhall St, Portland, ME 04102. The listed phone number is (207) 662-4594.
What is Adam O'brien's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Adam O'brien enrolled in Medicare?
Yes. Adam O'brien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Adam O'brien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adam O'brien reassigns Medicare benefits to Spectrum Healthcare Partners, P.A. (Portland, ME). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Adam O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Adam O'brien accept?
Health plans from Taro Health list Adam O'brien as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Adam O'brien affiliated with any hospitals?
According to CMS data, Adam O'brien is affiliated with Northern Light Health and Maine Medical Center.
When was this NPI record last updated?
The NPPES record for Adam O'brien was last updated on June 4, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.
# Dr. Adam O'brien, DO · NPI 1912380320
Anesthesiology physician in Portland, Maine. Individual provider, active in the CMS NPPES registry since July 2, 2015.
## Identity
- **NPI:** 1912380320 (Entity type: Individual)
- **Enumerated:** July 2, 2015
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** DO2916 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 22 BRAMHALL ST, Portland, ME 04102-3134
- **Phone:** (207) 662-4594
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Spectrum Healthcare Partners, P.A. (NPI 1245252212, Portland, ME), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of New England, College Of Osteo Medicine, class of 2015
## Record status
- **NPPES last updated:** June 4, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1912380320) · Data from the CMS NPPES public registry.