Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Wiley Fan, DO

Individual provider Infectious Disease Physician · NPI 1811939572

Wiley Fan, DO is registered under Infectious Disease in Farmington Hills, Michigan. Graduated from Michigan State University College of Osteopathic Medicine in 1979, 47 years ago. Practices with Beaumont Medical Group- Specialty Services, a 858-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
47
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
MI
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

28080 Grand River Ave Ste 306N
Farmington Hills, MI 48336-5966
Phone: (947) 521-8314
Fax: (248) 478-8864
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 5101007795 (MI)

Record details

NPI number1811939572
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 10, 2006
Last updated in NPPESNovember 17, 2020
Certification dateNovember 17, 2020

Medicare enrollment

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

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1979 (47 years in practice)
Group practice Beaumont Medical Group- Specialty Services — 858 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients101
Services billed 233 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Beaumont Medical Group- Specialty Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 858 clinicians in the practice; 12 are shown here.

Other providers in Farmington Hills