Cristina Wheeler Castillo-Nelson, MD
Family Medicine Physician · Ashland, WI
Cristina Wheeler Castillo-Nelson, MD is a family medicine physician with a practice address in Ashland, Wisconsin, and NPI 1922495456, issued on Apr 22, 2015. Check the license on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Cristina Wheeler Castillo-Nelson
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 61012 MN
Self-reported in NPPES; status is on the state search - Practice location
- 2201 Lake Shore Dr E, Ashland, WI 54806
- Phone
- (218) 249-5555
- Enumerated
- Apr 22, 2015
- Record last updated
- Feb 4, 2022
- Medicare enrollment
- Enrolled (PECOS I20220317000647); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 2201 Lake Shore Dr E
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Cristina Wheeler Castillo-Nelson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average family medicine physician in 2024
2,229 Medicare Part D claims for 247 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 68 claims were for opioids.
Most prescribed
- Atorvastatin Calcium148 claims
- Lisinopril108 claims
- Amlodipine Besylate94 claims
- Levothyroxine Sodium69 claims
- Losartan Potassium65 claims
- Gabapentin63 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 3 group practices
- Memorial Medical Center IncAshland, WI
- St. Luke's Hospital OF DuluthAshland, WI
- The Lakes Community Health Center IncAshland, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cristina Wheeler Castillo-Nelson among 3,765 family medicine physician records in Wisconsin
Cristina Wheeler Castillo-Nelson, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 76% of them.
- NPI issued2015 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · median 2007 among the 2,347 with a school on file
- Record last updated2022 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
32 family medicine physician records list a practice address in Ashland
They are 32 of the 366 NPPES records with a practice address in Ashland, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Ashland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Mary Anderson, MDAshland, WI 548061972511418
- Thomas Cunningham, MDAshland, WI 548061487605804
- Sharon Hammond, MDAshland, WI 548061962453829
- Sharon Handy, M.D.Ashland, WI 548061841290616
- John IpsenAshland, WI 548061073564126
- Andrew Matheus, MDAshland, WI 548061467460980
- John McCue, MDAshland, WI 548061790736254
- John OujiriAshland, WI 548061447276589
Common questions
What is Cristina Wheeler Castillo-Nelson, MD's NPI number?
Cristina Wheeler Castillo-Nelson, MD's National Provider Identifier (NPI) is 1922495456, issued on Apr 22, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Cristina Wheeler Castillo-Nelson, MD located?
The NPPES record lists a practice address at 2201 Lake Shore Dr E, Ashland, WI, 54806. Phone: (218) 249-5555. Providers update this record themselves, so call before visiting.
How can I verify Cristina Wheeler Castillo-Nelson, MD's license?
Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Cristina Wheeler Castillo-Nelson, MD prescribe under Medicare Part D?
In 2024, Cristina Wheeler Castillo-Nelson, MD had 2,229 Medicare Part D claims for 247 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.