Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mr. Guy P Van der Werf, MD

Individual provider Family Medicine Physician · NPI 1538154257

Mr. Guy P Van der Werf, MD is a Family Practice in Estes Park, Colorado. Graduated from University of Arizona College of Medicine in 1987, 39 years ago. Practices with Poudre Valley Medical Group LLC, a 2,416-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Colorado.

Years since qualifying
39
Trained at
University of Arizona College of Medicine
Licensed in
CO
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

131 Stanley Ave Ste 202
Estes Park, CO 80517-6356
Phone: (970) 586-2344
Fax: (970) 586-9060
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 31317 (CO)

Record details

NPI number1538154257
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 19, 2005
Last updated in NPPESSeptember 27, 2018
Mailing address555 Prospect Ave, Estes Park, CO 80517-6312

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Poudre Valley Medical Group Llc — 2416 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Estes Park