Kathryn Twomey, MD
NPI 1063755817 · Surgical Critical Care Physician · Boston, MA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Twomey, MD is a Surgical Critical Care Physician provider in Boston, MA (NPI 1063755817).
Provider details
- NPI number
- 1063755817
- Entity type
- Individual
- Primary specialty
- Surgical Critical Care PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 274976 (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
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
302 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 175 | $82 |
| Critical Care, First 30-74 Minutes99291 | 45 | $220 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 43 | $136 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 15 | $52 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 13 | $124 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-03-30
- Last updated
- 2019-08-30
Frequently asked questions
- What is Kathryn Twomey's NPI number?
- Kathryn Twomey's National Provider Identifier (NPI) is 1063755817, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Twomey's specialty?
- Kathryn Twomey is listed in the NPPES registry with a primary specialty of Surgical Critical Care Physician (Allopathic & Osteopathic Physicians).
- Where is Kathryn Twomey located?
- Kathryn Twomey's practice location on file with NPPES is 725 Albany Street, Boston, MA 02118.
- What is Kathryn Twomey's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Twomey is (617) 414-4861.
- Does Kathryn Twomey accept Medicare?
- Kathryn Twomey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Twomey's NPI active?
- Yes — Kathryn Twomey's NPI (1063755817) is active in the NPPES registry as of the last update on 2019-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.