Robert Markenson, M.D.
NPI 1104870096 · Orthopaedic Surgery Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Markenson, M.D. is a Orthopaedic Surgery Physician provider in Saint Louis, MO (NPI 1104870096).
Provider details
- NPI number
- 1104870096
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 36092 (MO)
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
430 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) |
|---|---|---|
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 152 | $66 |
| Fluoroscopic Guidance for Needle Placement77002 | 150 | $112 |
| Injection of Contrast for Imaging of Knee Joint27369 | 32 | $177 |
| Review By Radiologist of Knee Joint Image73580 | 32 | $108 |
| X-Ray of Knee, 1-2 Views73560 | 17 | $33 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 17 | $56 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-22
- Last updated
- 2008-11-18
Frequently asked questions
- What is Robert Markenson's NPI number?
- Robert Markenson's National Provider Identifier (NPI) is 1104870096, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Markenson's specialty?
- Robert Markenson is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Markenson located?
- Robert Markenson's practice location on file with NPPES is 12152 Tesson Ferry Rd, Saint Louis, MO 63128-1726.
- What is Robert Markenson's phone number?
- The practice phone number listed in the NPPES registry for Robert Markenson is (314) 849-5414.
- Does Robert Markenson accept Medicare?
- Robert Markenson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Markenson's NPI active?
- Yes — Robert Markenson's NPI (1104870096) is active in the NPPES registry as of the last update on 2008-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.