Amy O'Brien, NP
NPI 1427782358 · Nurse Practitioner · Lynnfield, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy O'Brien, NP is a Nurse Practitioner provider in Lynnfield, MA (NPI 1427782358).
Provider details
- NPI number
- 1427782358
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- RN2302203 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
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
3 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
434 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 124 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 102 | $110 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 82 | $78 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 48 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 29 | $155 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 106 | 40 |
| Lisinopril | 62 | 21 |
| Omeprazole | 58 | 16 |
| Rosuvastatin Calcium | 57 | 23 |
| Amlodipine Besylate | 45 | 20 |
| Famotidine | 36 | — |
| Levothyroxine Sodium | 33 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-07-15
- Last updated
- 2022-11-03
- Certified
- 2022-11-03
Frequently asked questions
- What is Amy O'Brien's NPI number?
- Amy O'Brien's National Provider Identifier (NPI) is 1427782358, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy O'Brien's specialty?
- Amy O'Brien is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Amy O'Brien located?
- Amy O'Brien's practice location on file with NPPES is 1350 Market St Fl 2, Lynnfield, MA 01940-4048.
- What is Amy O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Amy O'Brien is (781) 213-4040.
- Does Amy O'Brien accept Medicare?
- Amy O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy O'Brien's NPI active?
- Yes — Amy O'Brien's NPI (1427782358) is active in the NPPES registry as of the last update on 2022-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.