John Marxer, MD
NPI 1609404631 · Anesthesiology Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Marxer, MD is a Anesthesiology Physician provider in Indianapolis, IN (NPI 1609404631).
Provider details
- NPI number
- 1609404631
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 550 University BlvdIndianapolis, IN 46202-5149Phone: (317) 274-0275
Registry dates
- Enumerated
- 2020-03-27
- Last updated
- 2025-04-01
- Certified
- 2025-04-01
Frequently asked questions
- What is John Marxer's NPI number?
- John Marxer's National Provider Identifier (NPI) is 1609404631, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Marxer's specialty?
- John Marxer is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Marxer located?
- John Marxer's practice location on file with NPPES is 1130 West Michigan Street, Indianapolis, IN 46202-5209.
- What is John Marxer's phone number?
- The practice phone number listed in the NPPES registry for John Marxer is (317) 274-0076.
- Does John Marxer accept Medicare?
- John Marxer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Marxer's NPI active?
- Yes — John Marxer's NPI (1609404631) is active in the NPPES registry as of the last update on 2025-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.