SETH BENJAMIN LANGSAM MD
NPI 1225321797
Internal Medicine - Critical Care Medicine in Indianapolis, IN
About Seth Benjamin Langsam Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SETH BENJAMIN LANGSAM MD (NPI 1225321797) is an individual critical care medicine provider in Indianapolis, Indiana, licensed in Indiana (01076665A) and active in the NPI registry since May 2011. He is enrolled in Medicare PECOS, is affiliated with Memorial Hospital Of South Bend, and maintains a secondary practice location in Indianapolis.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 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
Seth Benjamin Langsam Md 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
6Medicare enrollment records show Seth Langsam reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 5,212 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 318 clinicians in this Medicare group
Sturgis, MI 49091
- Reassigned Medicare billing, Michigan enrollment
- 465 clinicians in this Medicare group
Three Rivers, MI 49093
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Ascension Borgess Hospital
- 247 clinicians in this Medicare group
Hudsonville, MI 49426
- Reassigned Medicare billing, Michigan enrollment
- 737 clinicians in this Medicare group
Livonia, MI 48154
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Epmg Of Michigan PC
- 175 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 4
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.
Memorial Hospital Of South Bend
Acute Care Hospitals · South Bend, INThree Rivers Health
Acute Care Hospitals · Three Rivers, MIMercy Health Saint Mary's
Acute Care Hospitals · Grand Rapids, MIBorgess Medical Center
Acute Care Hospitals · Kalamazoo, MIOaklawn Hospital
Acute Care Hospitals · Marshall, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 46202 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
INDIANAPOLIS, IN 46202
INDIANAPOLIS, IN 46202
INDIANAPOLIS, IN 46202
INDIANAPOLIS, IN 46202
INDIANAPOLIS, IN 46202
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 Seth Langsam's NPI number?
The NPI number for Seth Langsam is 1225321797. It was assigned to this individual provider in the NPPES registry on May 17, 2011.
Where is Seth Langsam located?
Seth Langsam practices at 1120 W Michigan St Cl 260, Indianapolis, IN 46202. The listed phone number is (317) 278-0042.
What is Seth Langsam's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Seth Langsam enrolled in Medicare?
Yes. Seth Langsam 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 Seth Langsam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Seth Langsam reassigns Medicare benefits to 6 organizations: Iu Health Medical Group, LLC (Indianapolis, IN), Indiana Clinic Critical Care LLC (Indianapolis, IN), Ascension Medical Group Promed (Sturgis, MI), Beacon Kalamazoo Inc (Three Rivers, MI), Advantage Health/Saint Mary's Medical Group (Hudsonville, MI) and 1 more organization, listed in the Medicare section above. 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 Seth Langsam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Seth Langsam accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 3 other insurers list Seth Langsam 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 Seth Langsam affiliated with any hospitals?
According to CMS data, Seth Langsam is affiliated with Memorial Hospital Of South Bend, Three Rivers Health, Mercy Health Saint Mary's, Borgess Medical Center and Oaklawn Hospital.
When was this NPI record last updated?
The NPPES record for Seth Langsam was last updated on March 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Seth Benjamin Langsam, MD · NPI 1225321797
Critical Care Medicine physician in Indianapolis, Indiana. Individual provider, active in the CMS NPPES registry since May 17, 2011.
## Identity
- **NPI:** 1225321797 (Entity type: Individual)
- **Enumerated:** May 17, 2011
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 01076665A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1120 W MICHIGAN ST, CL 260, Indianapolis, IN 46202-5209
- **Phone:** (317) 278-0042 · **Fax:** (317) 278-0027
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Iu Health Medical Group, LLC (NPI 1326893777, Indianapolis, IN); Indiana Clinic Critical Care LLC (NPI 1417285230, Indianapolis, IN); Ascension Medical Group Promed (NPI 1013926997, Sturgis, MI); Beacon Kalamazoo Inc (NPI 1629495320, Three Rivers, MI); Advantage Health/Saint Mary's Medical Group (NPI 1538430533, Hudsonville, MI); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Cincinnati College Of Medicine, class of 2011
## Record status
- **NPPES last updated:** March 16, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1225321797) · Data from the CMS NPPES public registry.