Erin O'Day, PA-C
NPI 1578144911 · Physician Assistant · Portland, ME
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin O'Day, PA-C is a Physician Assistant provider in Portland, ME (NPI 1578144911).
Provider details
- NPI number
- 1578144911
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA2935 (ME)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
7 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
35 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 23 | $101 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 12 | $146 |
Typical Medicare-allowed amounts for these services range $101–$146 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (6)
- 55 Fruit St # 2622Boston, MA 02114-2621Phone: (617) 724-2100
- 1 Medical Center DrBiddeford, ME 04005-9422Phone: (207) 294-5000Fax: (207) 294-5227
- 335 Brighton AvePortland, ME 04102-2363Phone: (207) 662-0111Fax: (207) 662-8133
- 75 Maverick StRockland, ME 04841-2448Phone: (207) 301-6000Fax: (207) 800-4144
- 6 Glen Cove DrRockport, ME 04856-4272Phone: (207) 921-8311Fax: (207) 301-5288
- 25 June StSanford, ME 04073-2621Phone: (207) 490-7450Fax: (207) 490-7452
Registry dates
- Enumerated
- 2021-04-17
- Last updated
- 2025-10-20
- Certified
- 2025-10-20
Frequently asked questions
- What is Erin O'Day's NPI number?
- Erin O'Day's National Provider Identifier (NPI) is 1578144911, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin O'Day's specialty?
- Erin O'Day is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Erin O'Day located?
- Erin O'Day's practice location on file with NPPES is 22 Bramhall St, Portland, ME 04102-3134.
- What is Erin O'Day's phone number?
- The practice phone number listed in the NPPES registry for Erin O'Day is (207) 662-2381.
- Does Erin O'Day accept Medicare?
- Erin O'Day is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin O'Day's NPI active?
- Yes — Erin O'Day's NPI (1578144911) is active in the NPPES registry as of the last update on 2025-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.