Oleg Volchonok, M.D.
Gastroenterology (CMS) · Philadelphia, PA
At a glance
11400 Bustleton Ave, Philadelphia, PA 19116-2815
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Oct 2, 2014. 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
11400 Bustleton AvePhiladelphia, PA 19116-2815
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1986
- CMS specialties
- Gastroenterology
Practice groups
Reported hospital affiliations
- Holy Redeemer Hospital And Medical Center Meadowbrook, PA
- Jefferson Einstein Philadelphia Hospital Philadelphia, PA
- Nazareth Hospital Philadelphia, PA
- St Mary Medical Center Langhorne, PA
- Thomas Jefferson University 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 |
|---|---|
| Colonoscopy | 268 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 262 |
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
- Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
- 0%2024Published MIPS performance rate. Lower rates indicate better performance for this inverse measure. Measure: MIPS_EC_001_overall. Collection type: REG. Measure denominator: 23.
- 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: 1200.
- Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented
- 100%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_317_overall. Collection type: REG. Measure denominator: 4290.
Source: PY 2024 Clinician Public Reporting: MIPS Measures and Attestations · Published Sep 10, 2026.
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 |
|---|---|
| Services other than consulting | $3,440.00 |
| Food and beverage | $2,581.58 |
| Travel and lodging | $25.40 |
Reporting companies
| Company | Amount |
|---|---|
| PHATHOM PHARMACEUTICALS, INC. | $3,739.75 |
| GILEAD SCIENCES, INC. | $504.93 |
| ARDELYX, INC. | $325.72 |
| AIMMUNE THERAPEUTICS, INC. | $221.96 |
| ABBVIE INC. | $220.32 |
| QOL MEDICAL, LLC | $195.20 |
| SALIX PHARMACEUTICALS, A DIVISION OF BAUSCH HEALTH US, LLC | $183.20 |
| IPSEN BIOPHARMACEUTICALS, INC | $131.50 |
| Other reporting companies | $524.40 |
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
- Gastroenterology (CMS)
- Taxonomy code
- 207RG0100X
- Enumeration date
- Jun 3, 2006
- Record updated
- Oct 2, 2014
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RG0100X · Primary
License reported: MD 055985-L PA
207RG0100X
License reported: MA 064781 NJ
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
11400 Bustleton AvePhiladelphia, PA 19116-2815
- Phone
- (215) 969-8446
- Fax
- (215) 969-4451
Mailing address
1618 ASTOR DRCHERRY HILL, NJ 080033548
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue