Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Cristina Wheeler Castillo-Nelson, MD

Individual provider Family Medicine Physician · NPI 1922495456

Cristina Wheeler Castillo-Nelson, MD is registered under Family Practice in Ashland, Wisconsin. Graduated from University of California, Irvine, California College of Medicine in 2015, 11 years ago. Practices with Memorial Medical Center Inc, a 78-clinician group and accepts Medicare assignment. Licensed in Minnesota.

Years since qualifying
11
Trained at
University of California, Irvine, California College of Medicine
Licensed in
MN
In the registry since
2015
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

2201 Lake Shore Dr E
Ashland, WI 54806-2331
Phone: (218) 249-5555
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Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 61012 (MN)

Record details

NPI number1922495456
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 22, 2015
Last updated in NPPESFebruary 4, 2022
Certification dateFebruary 4, 2022

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Memorial Medical Center Inc — 78 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times
Removal of tissue 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients202
Services billed 1,071 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

  • Aspirus Wausau Hospital Hospital · Wausau, WI
  • St Lukes Hospital Hospital · Duluth, MN · listed as St Luke's Hospital
  • Tamarack Health Ashland Medical Center Hospital · Ashland, WI
  • Tamarack Health Hayward Medical Center Hospital · Hayward, WI

Colleagues at Memorial Medical Center Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 78 clinicians in the practice; 12 are shown here.

Other providers in Ashland