Michael J Marion, MD
Hand Surgery · Orthopedic Surgery (CMS) · Towson, MD
At a glance
8322 Bellona Ave, Towson, MD 21204-2012
Published activity: Upper limb (arm) arthroscopy (minimally invasive joint repair). View counts and coverage
NPPES record updated Dec 13, 2013. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
8322 Bellona Ave Suite 100Towson, MD 21204-2012
Education & affiliations
- Medical / professional school
- Perelman School Of Med At The University Of Pennsylvania
- Graduation year
- 1990
- CMS specialties
- Hand Surgery · Orthopedic Surgery
Practice groups
Reported hospital affiliations
- University Of Md St Joseph Medical Center Towson, MD
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Upper limb (arm) arthroscopy (minimally invasive joint repair) | 54 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Reported clinician measures
Measures below describe reported clinician performance in the stated period. They do not form an overall HCPList rating, and reporting differs between clinicians.
Published clinical measures
- Communication with the Physician or Other Clinician Managing On-Going Care Post-Fracture for Men and Women Aged 50 Years and Older
- 100%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_024_overall. Collection type: REG. Measure denominator: 35.
- Screening for Osteoporosis for Women Aged 65-85 Years of Age
- 82%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_039_overall. Collection type: REG. Measure denominator: 157.
- Advance Care Plan
- 100%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_047_overall. Collection type: REG. Measure denominator: 299.
See all 4 reported measures
- Urinary Incontinence: Assessment of Presence or Absence of Urinary Incontinence in Women Aged 65 Years and Older
- 100%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_048_overall. Collection type: REG. Measure denominator: 181.
Source: PY 2024 Clinician Public Reporting: MIPS Measures and Attestations · Published Sep 10, 2026.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Hand Surgery · Orthopedic Surgery (CMS)
- Taxonomy code
- 207XS0106X
- Enumeration date
- Jul 24, 2006
- Record updated
- Dec 13, 2013
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207X00000X
License reported: D0053748 MD
207XS0106X · Primary
License reported: D0053748 MD
2086S0105X
License reported: D0053748 MD
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
8322 Bellona AveSuite 100
Towson, MD 21204-2012
- Phone
- (410) 337-7900
- Fax
- (410) 337-5321
Mailing address
8322 BELLONA AVESUITE 100
TOWSON, MD 212042012
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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