Randy J Janczyk, MD
Surgery · Royal Oak, MI
At a glance
3535 W 13 Mile Rd, Royal Oak, MI 48073
Published activity: Colonoscopy · Hernia repair (minimally invasive) · Hernia repair - groin (open). View counts and coverage
NPPES record updated Jun 13, 2023. 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
3535 W 13 Mile Rd Ste 204Royal Oak, MI 48073
Additional reported practice locations
44199 Dequindre Rd Ste 315Troy, MI 480851128
Phone: 2489643600
Fax: 2489641188 3601 W 13 Mile Rd
Royal Oak, MI 480736712
Phone: 2488982800
Fax: 2488982898 3535 W 13 Mile Rd Ste Ll
Royal Oak, MI 480736770
Phone: 2485513000
Fax: 2485514784
Education & affiliations
- Medical / professional school
- University Of Texas Medical School At San Antonio
- Graduation year
- 1995
- CMS specialties
- Critical Care (Intensivists) · General Surgery
Practice groups
Reported hospital affiliations
- Beaumont Hospital - Dearborn Dearborn, MI
- Beaumont Hospital Royal Oak Royal Oak, MI
- Beaumont Hospital, Troy Troy, MI
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 | 1-10 |
| Hernia repair (minimally invasive) | 45 |
| Hernia repair - groin (open) | 1-10 |
| Removal of tissue | 1-10 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 1-10 |
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
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
- Surgery
- Taxonomy code
- 208600000X
- Enumeration date
- Nov 4, 2005
- Record updated
- Jun 13, 2023
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
208600000X · Primary
License reported: 4301067765 MI
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
3535 W 13 Mile RdSte 204
Royal Oak, MI 48073
- Phone
- (248) 551-9090
- Fax
- (248) 551-9080
Mailing address
29992 NORTHWESTERN HWYSTE C
FARMINGTON HILLS, MI 483343292
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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