Sidharta Gangadharan, M.D.
NPI 1184656605 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Boston, MA
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sidharta Gangadharan, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Boston, MA (NPI 1184656605).
Provider details
- NPI number
- 1184656605
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 158136 (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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
476 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 139 | $71 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 93 | $59 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 67 | $95 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 39 | $191 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 32 | $109 |
| Removal of Lymph Nodes of Chest Cavity Using an Endoscope32674 | 31 |
Practice location
Mailing address
Additional practice locations (1)
- 830 Harrison AveSte 3400, Moakley BuildingBoston, MA 02118Phone: (617) 414-8060Fax: (617) 414-8012
Registry dates
- Enumerated
- 2006-07-07
- Last updated
- 2022-04-14
- Certified
- 2022-04-14
Frequently asked questions
- What is Sidharta Gangadharan's NPI number?
- Sidharta Gangadharan's National Provider Identifier (NPI) is 1184656605, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sidharta Gangadharan's specialty?
- Sidharta Gangadharan is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Sidharta Gangadharan located?
- Sidharta Gangadharan's practice location on file with NPPES is Beth Israel Deaconess Med Ctr, Boston, MA 02215.
- What is Sidharta Gangadharan's phone number?
- The practice phone number listed in the NPPES registry for Sidharta Gangadharan is (617) 632-8383.
- Does Sidharta Gangadharan accept Medicare?
- Sidharta Gangadharan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sidharta Gangadharan's NPI active?
- Yes — Sidharta Gangadharan's NPI (1184656605) is active in the NPPES registry as of the last update on 2022-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.