Steven Evans Guillen, MD
Emergency Medicine · Freehold, NJ
At a glance
901 W Main St, Freehold, NJ 07728-2549
Published activity: Varicose vein removal. View counts and coverage
NPPES record updated Sep 11, 2026. 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
901 W Main StFreehold, NJ 07728-2549
Additional reported practice locations
2100 Wescott DrFlemington, NJ 088224603
Phone: 8566168100 · Ext. 3398 766 Shrewsbury Ave Ste 300
Tinton Falls, NJ 077243001
Phone: 7322288346
Fax: 2242354652 1975 Hylan Blvd Ste C
Staten Island, NY 103063515
Phone: 7186909591
Fax: 2242354652
Education & affiliations
- Medical / professional school
- Perelman School Of Med At The University Of Pennsylvania
- Graduation year
- 2001
- CMS specialties
- Emergency Medicine
Practice groups
- Morristown Emergency Medical Associates Llc
- Pelham Pkwy Medical Of New York Llc
- Usa Vein Clinics Of New Jersey Llc
Reported hospital affiliations
- Centrastate Medical Center Freehold, NJ
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 |
|---|---|
| Varicose vein removal | 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
- Emergency Medicine
- Taxonomy code
- 207P00000X
- Enumeration date
- Jul 10, 2006
- Record updated
- Sep 11, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207P00000X · Primary
License reported: 25MA08050600 NJ
207P00000X
License reported: 232119 NY
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
901 W Main StFreehold, NJ 07728-2549
- Phone
- (732) 294-2666
Mailing address
901 W MAIN STFREEHOLD, NJ 077282537
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