Katherine Mason, M.D.
NPI 1194819516 · Anesthesiology Physician · Newton, MA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Mason, M.D. is a Anesthesiology Physician provider in Newton, MA (NPI 1194819516).
Provider details
- NPI number
- 1194819516
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 282163 (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
19 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
178 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) |
|---|---|---|
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 49 | $65 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 36 | $72 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 19 | $84 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 18 | $49 |
| Anesthesia for Procedure on Nerves, Muscles, Tendons, and Tissue of Forearm, Wrist, and Hand01810 | 17 | $59 |
| Anesthesia for Other Procedure on Skin of Arms, Legs, and Front Body00400 | 14 | $93 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-02
- Last updated
- 2022-03-02
- Certified
- 2022-03-02
Frequently asked questions
- What is Katherine Mason's NPI number?
- Katherine Mason's National Provider Identifier (NPI) is 1194819516, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Mason's specialty?
- Katherine Mason is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Mason located?
- Katherine Mason's practice location on file with NPPES is 2014 Washington St, Newton, MA 02462-1607.
- What is Katherine Mason's phone number?
- The practice phone number listed in the NPPES registry for Katherine Mason is (617) 243-6298.
- Does Katherine Mason accept Medicare?
- Katherine Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Mason's NPI active?
- Yes — Katherine Mason's NPI (1194819516) is active in the NPPES registry as of the last update on 2022-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.