JOHN M WALKER M.D.
NPI 1720021769
Family Medicine in Franklin, IN
About John M Walker M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN M WALKER M.D. (NPI 1720021769) is an individual family medicine provider in Franklin, Indiana, licensed in Indiana (01040526) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Johnson Memorial Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John M Walker M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show John Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Carmel, IN 46032
- Reassigned Medicare billing, Indiana enrollment
- 195 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 10
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johnson Memorial Hospital
Acute Care Hospitals · Franklin, INIndiana University Health Bloomington Hospital
Acute Care Hospitals · Bloomington, INIndiana University Health
Acute Care Hospitals · Indianapolis, INCommunity Hospital South, Inc.
Acute Care Hospitals · Indianapolis, INFranciscan Health Indianapolis
Acute Care Hospitals · Indianapolis, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 46131 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 7
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FRANKLIN, IN 46131
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Walker's NPI number?
The NPI number for John Walker is 1720021769. It was assigned to this individual provider in the NPPES registry on June 14, 2006.
Where is John Walker located?
John Walker practices at 990 E State Road 44, Franklin, IN 46131. The listed phone number is (317) 736-8474.
What is John Walker's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is John Walker enrolled in Medicare?
Yes. John Walker is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for John Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Walker reassigns Medicare benefits to American Health Network Of Indiana, LLC (Carmel, IN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Walker accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 1 other insurer list John Walker as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Walker affiliated with any hospitals?
According to CMS data, John Walker is affiliated with Johnson Memorial Hospital, Indiana University Health Bloomington Hospital, Indiana University Health, Community Hospital South, Inc. and Franciscan Health Indianapolis.
When was this NPI record last updated?
The NPPES record for John Walker was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John M Walker, M.D. · NPI 1720021769
Family Medicine physician in Franklin, Indiana. Individual provider, active in the CMS NPPES registry since June 14, 2006.
## Identity
- **NPI:** 1720021769 (Entity type: Individual)
- **Enumerated:** June 14, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 01040526 (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 990 E STATE ROAD 44, Franklin, IN 46131-9199
- **Phone:** (317) 736-8474 · **Fax:** (317) 736-6040
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** American Health Network Of Indiana, LLC (NPI 1831236272, Carmel, IN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Indiana University School Of Medicine, class of 1991
## Record status
- **NPPES last updated:** August 5, 2026
- **Other identifiers:** Medicaid 100333850B (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1720021769) · Data from the CMS NPPES public registry.