David Ahern, M.D.
NPI 1720425598 · Family Medicine Physician · Shrewsbury, MA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Ahern, M.D. is a Family Medicine Physician provider in Shrewsbury, MA (NPI 1720425598).
Provider details
- NPI number
- 1720425598
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 265492 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 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
1,437 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) |
|---|---|---|
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 275 | $19 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 268 | $52 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 259 | $19 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 170 | $83 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 115 | $74 |
| 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'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 132 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 658 | 199 |
| Amlodipine Besylate | 372 | 102 |
| Lisinopril | 329 | 97 |
| Losartan Potassium | 241 | 77 |
| Omeprazole | 229 | 62 |
| Rosuvastatin Calcium | 185 | 58 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-03
- Last updated
- 2020-12-11
- Certified
- 2020-12-11
Frequently asked questions
- What is David Ahern's NPI number?
- David Ahern's National Provider Identifier (NPI) is 1720425598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Ahern's specialty?
- David Ahern is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Ahern located?
- David Ahern's practice location on file with NPPES is 604 Main St, Shrewsbury, MA 01545-5663.
- What is David Ahern's phone number?
- The practice phone number listed in the NPPES registry for David Ahern is (508) 842-0057.
- Does David Ahern accept Medicare?
- David Ahern is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Ahern's NPI active?
- Yes — David Ahern's NPI (1720425598) is active in the NPPES registry as of the last update on 2020-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.