Quick answers
- Where does John Maslin see patients?
- Medicare's clinician data lists 1 practice location in Denver, CO. Call before your visit to confirm the address.
- What is John Maslin's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does John Maslin accept Medicare assignment?
- Yes. Medicare's clinician data says John Maslin 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.
- What is John Maslin's NPI number?
- 1730797523. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John Maslin is enrolled with Medicare (CMS data updated 2026-10-02).
- 1125 17th St, Suite 1000Denver, CO 80202
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Denver
Clinicians with the same Medicare primary specialty in Denver, CO — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1730797523 |
| 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
- 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