Quick answers
- Which hospitals does John A. Johnson work at?
- Medicare's official clinician data lists John A. Johnson at 4 hospitals: Brigham and Women's Hospital, Cape Cod Hospital, Falmouth Hospital and Nantucket Cottage Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John A. Johnson see patients?
- Medicare's clinician data lists 2 practice locations, including Newton, MA and Hyannis, MA. Call before your visit to confirm the address.
- What is John A. Johnson's specialty?
- Medicare lists Allergy/Immunology as the primary specialty.
- Does John A. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says John A. Johnson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does John A. Johnson offer telehealth?
- Medicare's clinician data says John A. Johnson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John A. Johnson?
- (857) 675-6797, as listed in official Medicare / NPI Registry data.
- What is John A. Johnson's NPI number?
- 1043650641. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John A. Johnson works
Medicare's Facility Affiliation Data lists John A. Johnson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Brigham and Women's HospitalBoston, MA · Acute Care Hospital · CCN 220110
- Cape Cod HospitalHyannis, MA · Acute Care Hospital · CCN 220012
- Falmouth HospitalFalmouth, MA · Acute Care Hospital · CCN 220135
- Nantucket Cottage HospitalNantucket, MA · Acute Care Hospital · CCN 220177
Practice locations
Addresses where John A. Johnson is enrolled with Medicare (CMS data updated 2026-10-02).
- 2000 Washington St, Suite 304Newton, MA 02462 (857) 675‑6797
- 433 W Main St, Unit AHyannis, MA 02601 (508) 362‑0099
Group practices
Medicare enrollment lists John A. Johnson as a member of this group (CMS data updated 2026-10-02).
- Greater Boston Allergy Asthma Sinus and Immunology Centers, P.C.8 clinicians in the group
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in Newton
Clinicians with the same Medicare primary specialty in Newton, MA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | University Of New England, College Of Osteo Medicine |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1043650641 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians