Mark Langer, M.D.
NPI 1528022746 · Radiation Oncology Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Langer, M.D. is a Radiation Oncology Physician provider in Indianapolis, IN (NPI 1528022746).
Provider details
- NPI number
- 1528022746
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01047506 (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,881 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Stereoscopic X-Ray Guidance for Localization of Target Volume for the Delivery of Radiation TherapyG6002 | 547 | $19 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 257 | $42 |
| Design and Construction of Complex Radiation Treatment Device77334 | 238 | $56 |
| Calculation of Radiation Therapy Dose77300 | 192 | $30 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 171 | $177 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 84 | $61 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-14
- Last updated
- 2021-03-16
- Certified
- 2021-03-16
Frequently asked questions
- What is Mark Langer's NPI number?
- Mark Langer's National Provider Identifier (NPI) is 1528022746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Langer's specialty?
- Mark Langer is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Langer located?
- Mark Langer's practice location on file with NPPES is 550 University Blvd, Indianapolis, IN 46202-5149.
- What is Mark Langer's phone number?
- The practice phone number listed in the NPPES registry for Mark Langer is (317) 944-2524.
- Does Mark Langer accept Medicare?
- Mark Langer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Langer's NPI active?
- Yes — Mark Langer's NPI (1528022746) is active in the NPPES registry as of the last update on 2021-03-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.