Gregory Kirby, MD
NPI 1275065153 · Anesthesiology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Kirby, MD is a Anesthesiology Physician provider in Boston, MA (NPI 1275065153).
Provider details
- NPI number
- 1275065153
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
246 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) |
|---|---|---|
| Insertion of Probe in Esophagus for Heart Ultrasound93313 | 58 | $12 |
| Anesthesia for Procedure to Assess Heart Electrical Activity00537 | 41 | $254 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 41 | $47 |
| Anesthesia for Procedure to Correct Abnormal Heart Rhythm00410 | 32 | $93 |
| Insertion of Tube in Pulmonary Artery for Monitoring93503 | 28 | $92 |
| Anesthesia for Procedure on Heart and Large Blood Vessels Using Heart-Lung Machine (1 Year Or Older)00562 | 20 | $1,178 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-03-30
- Last updated
- 2022-06-11
- Certified
- 2022-06-11
Frequently asked questions
- What is Gregory Kirby's NPI number?
- Gregory Kirby's National Provider Identifier (NPI) is 1275065153, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Kirby's specialty?
- Gregory Kirby is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Kirby located?
- Gregory Kirby's practice location on file with NPPES is 55 Fruit Street, Boston, MA 02114-2621.
- What is Gregory Kirby's phone number?
- The practice phone number listed in the NPPES registry for Gregory Kirby is (617) 963-4646.
- Does Gregory Kirby accept Medicare?
- Gregory Kirby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Kirby's NPI active?
- Yes — Gregory Kirby's NPI (1275065153) is active in the NPPES registry as of the last update on 2022-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.