Andrew Ahearn, NP
NPI 1598309932 · Registered Nurse · Leominster, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Ahearn, NP is a Registered Nurse provider in Leominster, MA (NPI 1598309932).
Provider details
- NPI number
- 1598309932
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- NP
- Sex
- Male
- Sole proprietor
- No
- License
- RN2319623 (MA)
Specialties & taxonomies
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 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
296 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 | 149 | $78 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 68 | $111 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 42 | $108 |
| Administration of Influenza Virus VaccineG0008 | 19 | $33 |
| Admn Sarscov2 Vacc 1 Dose90480 | 18 | $44 |
Typical Medicare-allowed amounts for these services range $33–$111 (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 · 85 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 418 | 157 |
| Lisinopril | 252 | 102 |
| Amlodipine Besylate | 213 | 70 |
| Omeprazole | 197 | 70 |
| Levothyroxine Sodium | 184 | 69 |
| Losartan Potassium | 183 | 66 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-10-29
- Last updated
- 2021-03-14
- Certified
- 2021-03-14
Frequently asked questions
- What is Andrew Ahearn's NPI number?
- Andrew Ahearn's National Provider Identifier (NPI) is 1598309932, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Ahearn's specialty?
- Andrew Ahearn is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Andrew Ahearn located?
- Andrew Ahearn's practice location on file with NPPES is 225 New Lancaster Rd, Leominster, MA 01453-4958.
- What is Andrew Ahearn's phone number?
- The practice phone number listed in the NPPES registry for Andrew Ahearn is (978) 534-6500.
- Does Andrew Ahearn accept Medicare?
- Andrew Ahearn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Ahearn's NPI active?
- Yes — Andrew Ahearn's NPI (1598309932) is active in the NPPES registry as of the last update on 2021-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.