John Gabriel Horneff, MD
Orthopedic Surgery · Philadelphia, PA
At a glance
925 Chestnut St, Philadelphia, PA 19107-4216
Published activity: Lower limb (leg) arthroscopy (minimally invasive joint repair) · Removal of tissue · Upper limb (arm) arthroscopy (minimally invasive joint repair). View counts and coverage
NPPES record updated Aug 10, 2016. 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
925 Chestnut St 5Th FloorPhiladelphia, PA 19107-4216
Education & affiliations
- Medical / professional school
- Perelman School Of Med At The University Of Pennsylvania
- Graduation year
- 2010
- CMS specialties
- Orthopedic Surgery
Practice groups
Reported hospital affiliations
- Chester County Hospital West Chester, PA
- Hospital Of Univ Of Pennsylvania Philadelphia, PA
- Penn Presbyterian Medical Center Philadelphia, PA
- Pennsylvania Hospital Philadelphia, PA
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 |
|---|---|
| Lower limb (leg) arthroscopy (minimally invasive joint repair) | 1-10 |
| Removal of tissue | 1-10 |
| Upper limb (arm) arthroscopy (minimally invasive joint repair) | 105 |
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.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Consulting fee | $11,889.00 |
| Travel and lodging | $1,452.70 |
| Royalty or license | $1,387.27 |
| Food and beverage | $854.04 |
Reporting companies
| Company | Amount |
|---|---|
| STRYKER CORPORATION | $14,135.76 |
| TIGON MEDICAL LLC | $1,387.27 |
| HERAEUS MEDICAL, LLC. | $41.89 |
| SMITH+NEPHEW, INC. | $18.09 |
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
- Orthopedic Surgery
- Taxonomy code
- 207X00000X
- Enumeration date
- May 12, 2010
- Record updated
- Aug 10, 2016
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207X00000X
License reported: MT197091 PA
390200000X
License reported: MT197091 PA
207X00000X · Primary
License reported: MD449085 PA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
925 Chestnut St5Th Floor
Philadelphia, PA 19107-4216
- Phone
- (267) 339-3500
Mailing address
833 CHESTNUT STSUITE 1402
PHILADELPHIA, PA 191074414
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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