Wilson Mertens, M.D.
NPI 1427016484 · Medical Oncology Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wilson Mertens, M.D. is a Medical Oncology Physician provider in Springfield, MA (NPI 1427016484).
Provider details
- NPI number
- 1427016484
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 203709 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
216 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 68 | $129 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 67 | $93 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 37 | $142 |
| 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 | 25 | $16 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 19 | $78 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-01
- Last updated
- 2016-11-14
Frequently asked questions
- What is Wilson Mertens's NPI number?
- Wilson Mertens's National Provider Identifier (NPI) is 1427016484, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wilson Mertens's specialty?
- Wilson Mertens is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Wilson Mertens located?
- Wilson Mertens's practice location on file with NPPES is 3350 Main St, Springfield, MA 01107-1112.
- What is Wilson Mertens's phone number?
- The practice phone number listed in the NPPES registry for Wilson Mertens is (413) 794-9338.
- Does Wilson Mertens accept Medicare?
- Wilson Mertens is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wilson Mertens's NPI active?
- Yes — Wilson Mertens's NPI (1427016484) is active in the NPPES registry as of the last update on 2016-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.