Nathaniel Langer, MD
NPI 1447547682 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Boston, MA
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Langer, MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Boston, MA (NPI 1447547682).
Provider details
- NPI number
- 1447547682
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 21457 (NH)
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
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
316 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 142 | $237 |
| Replacement of Aortic Valve Through the Skin and Femoral Artery33361 | 96 | $758 |
| Radical Reconstruction of Mitral Valve on Heart-Lung Machine33427 | 26 | $1,817 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 22 | $196 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 18 | $136 |
| Insertion of Artificial Valve Between Left Heart Chambers, Accessed Through the Skin0483T |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15,942 across 39 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
Additional practice locations (1)
- 67 Corporate Dr Ste 200Portsmouth, NH 03801-2847Phone: (603) 610-8070
Registry dates
- Enumerated
- 2011-07-08
- Last updated
- 2023-03-29
- Certified
- 2023-03-29
Frequently asked questions
- What is Nathaniel Langer's NPI number?
- Nathaniel Langer's National Provider Identifier (NPI) is 1447547682, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Langer's specialty?
- Nathaniel Langer is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Nathaniel Langer located?
- Nathaniel Langer's practice location on file with NPPES is 55 Fruit Street, Boston, MA 02114.
- What is Nathaniel Langer's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Langer is (617) 724-0800.
- Does Nathaniel Langer accept Medicare?
- Nathaniel Langer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Langer's NPI active?
- Yes — Nathaniel Langer's NPI (1447547682) is active in the NPPES registry as of the last update on 2023-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.