Mary Linda O'Reilly, NP
NPI 1043271455 · Nurse Practitioner · Worcester, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Linda O'Reilly, NP is a Nurse Practitioner provider in Worcester, MA (NPI 1043271455).
Provider details
- NPI number
- 1043271455
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- RN197029 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing 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
20 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
113 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 113 | $58 |
Typical Medicare-allowed amounts for these services range $58–$58 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Emtricitabine/Tenofov Alafenambrand: Descovy | 77 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 63 |
| Elviteg/Cob/Emtri/Tenof Alafenbrand: Genvoya | 50 |
| Quetiapine Fumarate | 49 |
| Abacavir/Dolutegravir/Lamivudibrand: Triumeq | 48 |
| Mirtazapine | 44 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 30 |
| Prazosin Hcl | 27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-28
- Last updated
- 2022-11-10
- Certified
- 2022-11-10
Frequently asked questions
- What is Mary Linda O'Reilly's NPI number?
- Mary Linda O'Reilly's National Provider Identifier (NPI) is 1043271455, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Linda O'Reilly's specialty?
- Mary Linda O'Reilly is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Linda O'Reilly located?
- Mary Linda O'Reilly's practice location on file with NPPES is 119 Belmont St, Worcester, MA 01605-2903.
- What is Mary Linda O'Reilly's phone number?
- The practice phone number listed in the NPPES registry for Mary Linda O'Reilly is (508) 334-6053.
- Does Mary Linda O'Reilly accept Medicare?
- Mary Linda O'Reilly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Linda O'Reilly's NPI active?
- Yes — Mary Linda O'Reilly's NPI (1043271455) is active in the NPPES registry as of the last update on 2022-11-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.