DR. JOHN L. RITTER M.D.
NPI 1013187772
Radiology - Neuroradiology in Jbsa Ft Sam Houston, TX
About Dr. John L. Ritter M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN L. RITTER M.D. (NPI 1013187772) is an individual neuroradiology provider in Jbsa Ft Sam Houston, Texas, licensed in Texas (L8173) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS, is affiliated with Shannon Medical Center, and maintains a secondary practice location in Jbsa Lackland.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Dr. John L. Ritter 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 Reassignments
2Medicare enrollment records show John Ritter reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Angelo, TX 76903
- Reassigned Medicare billing, Texas enrollment
- 671 clinicians in this Medicare group
Kobuk, AK 99751
- Reassigned Medicare billing, Alaska and Texas enrollments
- 100 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
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Shannon Medical Center
Acute Care Hospitals · San Angelo, TXLillian M Hudspeth Memorial Hospital
Critical Access Hospitals · Sonora, TXHeart Of Texas Memorial Hospital
Critical Access Hospitals · Brady, TXOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FORT SAM HOUSTON, TX 78234
FORT SAM HOUSTON, TX 78234
FORT SAM HOUSTON, TX 78234
FORT SAM HOUSTON, TX 78234
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 Ritter's NPI number?
The NPI number for John Ritter is 1013187772. It was assigned to this individual provider in the NPPES registry on March 8, 2008.
Where is John Ritter located?
John Ritter practices at 3551 Roger Brooke Dr Quality Services/7th Floor, Attn: Mche-Zqq, Jbsa Ft Sam Houston, TX 78234. The listed phone number is (210) 916-4218.
What is John Ritter's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Neuroradiology, with taxonomy code 2085N0700X.
Is John Ritter enrolled in Medicare?
Yes. John Ritter 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 organizations bill Medicare for John Ritter's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Ritter reassigns Medicare benefits to 2 organizations: Shannon Clinic (San Angelo, TX) and Maniilaq Association (Kobuk, AK). Each 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 Ritter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Ritter accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list John Ritter 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 Ritter affiliated with any hospitals?
According to CMS data, John Ritter is affiliated with Shannon Medical Center, Lillian M Hudspeth Memorial Hospital and Heart Of Texas Memorial Hospital.
When was this NPI record last updated?
The NPPES record for John Ritter was last updated on December 18, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.
# Dr. John L. Ritter, M.D. · NPI 1013187772
Neuroradiology physician in Jbsa Ft Sam Houston, Texas. Individual provider, active in the CMS NPPES registry since March 8, 2008.
## Identity
- **NPI:** 1013187772 (Entity type: Individual)
- **Enumerated:** March 8, 2008
- **Primary specialty:** Radiology - Neuroradiology · taxonomy 2085N0700X
- **State license:** L8173 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 3551 ROGER BROOKE DR, QUALITY SERVICES/7TH FLOOR, ATTN: MCHE-ZQQ, Jbsa Ft Sam Houston, TX 78234
- **Phone:** (210) 916-4218
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Shannon Clinic (NPI 1770587149, San Angelo, TX); Maniilaq Association (NPI 1265709901, Kobuk, AK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Florida College Of Medicine, class of 1998
## Record status
- **NPPES last updated:** December 18, 2020
- **Other identifiers:** Medicaid 212085901 (TX)
---
Source: [NPI Profile](https://npiprofile.com/npi/1013187772) · Data from the CMS NPPES public registry.