John Mayer, MD
NPI 1992815708 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Boston, MA
John Mayer, MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Boston, MA (NPI 1992815708).
Provider details
- NPI number
- 1992815708
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 52467 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2008-06-18
Frequently asked questions
- What is John Mayer's NPI number?
- John Mayer's National Provider Identifier (NPI) is 1992815708, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mayer's specialty?
- John Mayer is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is John Mayer located?
- John Mayer's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is John Mayer's phone number?
- The practice phone number listed in the NPPES registry for John Mayer is (617) 355-8258.
- Is John Mayer's NPI active?
- Yes — John Mayer's NPI (1992815708) is active in the NPPES registry as of the last update on 2008-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.