Holly Mason, M.D.
NPI 1033201462 · Surgery Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Surgical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Holly Mason, M.D. is a Surgery Physician provider in Springfield, MA (NPI 1033201462).
Provider details
- NPI number
- 1033201462
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 213644 (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 tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
150 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Partial Removal of Breast19301 | 32 | $665 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 32 | $66 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 28 | $179 |
| Imaging of Lymph Nodes During Surgery38900 | 22 | $133 |
| Biopsy Or Removal of Deep Lymph Nodes of Underarm38525 | 20 | $219 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$76 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-30
- Last updated
- 2018-01-18
Frequently asked questions
- What is Holly Mason's NPI number?
- Holly Mason's National Provider Identifier (NPI) is 1033201462, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Holly Mason's specialty?
- Holly Mason is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Holly Mason located?
- Holly Mason's practice location on file with NPPES is 100 Wason Avenue, Springfield, MA 01107-1179.
- What is Holly Mason's phone number?
- The practice phone number listed in the NPPES registry for Holly Mason is (413) 794-5265.
- Does Holly Mason accept Medicare?
- Holly Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Holly Mason's NPI active?
- Yes — Holly Mason's NPI (1033201462) is active in the NPPES registry as of the last update on 2018-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.