Dr. Mark Hasenauer, MD
Joint Replacement Surgery (Adult Reconstructive Orthopaedic Surgery Physician)
Who else practices at this address →
Baltimore city includes primary care (36% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- New York Medical College (2015)
- Years since graduation
- 11
- In the NPI registry since
- 2015
- Medicare patients seen, 2024
- 552
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2015Medical school: New York Medical College
- 2015Registered with an NPI (national billing number; not a license date)
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Adult Reconstructive Orthopaedic Surgery Physician primary
MD license D89273
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Medstar Union Memorial Hospital Baltimore, MD
- Medstar Good Samaritan Hospital Baltimore, MD
Medical groups
- Medstar Medical Group II LLC (3,767 clinicians)
- Suburban/nrh Medical Rehabilitation Inc (941 clinicians)
- Agape Physical Therapy and Sports Rehabilitation LP (678 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 552
- Services billed
- 2,527
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 604 | 62 |
| Established patient office or other outpatient visit, 20-29 minutes | 295 | 184 |
| X-ray of hip, 2-3 views | 173 | 122 |
| Aspiration and/or injection of fluid from large joint | 122 | 94 |
| X-ray of knee, 4 or more views | 113 | 104 |
| New patient office or other outpatient visit, 30-44 minutes | 105 | 105 |
| X-ray of knee, 3 views | 92 | 61 |
| Established patient office or other outpatient visit, 30-39 minutes | 87 | 83 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 34 | 34 |
| Replacement of thigh bone and hip joint with prosthesis | 33 | 32 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 4 companies reported 17 payments worth $11,472 in total to this clinician.
| DePuy Synthes Products, Inc. | $6,212 |
|---|---|
| Medical Device Business Services, Inc. | $4,779 |
| Zimmer Biomet Holdings, Inc. | $337 |
| DePuy Synthes Sales Inc. | $143 |
| Consulting Fee | $10,045 |
|---|---|
| Travel and Lodging | $856 |
| Food and Beverage | $570 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| DePuy Synthes Products, Inc. Oct 22, 2025 | Consulting Fee | $5,390 |
| Medical Device Business Services, Inc. Dec 19, 2025 | Consulting Fee | $1,715 |
| Medical Device Business Services, Inc. Aug 11, 2025 | Consulting Fee | $1,470 |
| Medical Device Business Services, Inc. Nov 3, 2025 | Consulting Fee | $735 |
| Medical Device Business Services, Inc. Oct 20, 2025 | Consulting Fee | $735 |
| DePuy Synthes Products, Inc. Oct 8, 2025 | Travel and Lodging Velys · Ortho-Knee · travel to Chicago, IL · in-kind | $343 |
| DePuy Synthes Products, Inc. Sep 11, 2025 | Travel and Lodging Velys · Ortho-Knee · travel to Chicago, IL · in-kind | $200 |
| DePuy Synthes Products, Inc. Oct 11, 2025 | Travel and Lodging Velys · Ortho-Knee · travel to Chicago, IL · in-kind | $146 |
| DePuy Synthes Products, Inc. Oct 7, 2025 | Travel and Lodging Velys · Ortho-Knee · travel to Chicago, IL · in-kind | $134 |
| Medical Device Business Services, Inc. Aug 11, 2025 | Travel and Lodging travel to Timonium, MD | $19.36 |
All 11 payments other than meals, newest first
| Company | What it was for | Amount |
|---|---|---|
| Medical Device Business Services, Inc. Dec 19, 2025 | Consulting Fee | $1,715 |
| Medical Device Business Services, Inc. Dec 19, 2025 | Travel and Lodging travel to BALTIMORE, MD | $14.70 |
| Medical Device Business Services, Inc. Nov 3, 2025 | Consulting Fee | $735 |
| DePuy Synthes Products, Inc. Oct 22, 2025 | Consulting Fee | $5,390 |
| Medical Device Business Services, Inc. Oct 20, 2025 | Consulting Fee | $735 |
| DePuy Synthes Products, Inc. Oct 11, 2025 | Travel and Lodging Velys · Ortho-Knee · travel to Chicago, IL · in-kind | $146 |
| DePuy Synthes Products, Inc. Oct 8, 2025 | Travel and Lodging Velys · Ortho-Knee · travel to Chicago, IL · in-kind | $343 |
| DePuy Synthes Products, Inc. Oct 7, 2025 | Travel and Lodging Velys · Ortho-Knee · travel to Chicago, IL · in-kind | $134 |
| DePuy Synthes Products, Inc. Sep 11, 2025 | Travel and Lodging Velys · Ortho-Knee · travel to Chicago, IL · in-kind | $200 |
| Medical Device Business Services, Inc. Aug 11, 2025 | Consulting Fee | $1,470 |
| Medical Device Business Services, Inc. Aug 11, 2025 | Travel and Lodging travel to Timonium, MD | $19.36 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.