Mary Lee Hochstein Villanueva, MD
Hematology & Oncology Physician · Yankton, SD
Mary Lee Hochstein Villanueva, MD is a hematology & oncology physician with a practice address in Yankton, South Dakota, and NPI 1699857821, issued on Oct 19, 2006. Check the license (South Dakota 6096, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Mary Lee Hochstein Villanueva
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 6096 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1104 W 8TH St, Yankton, SD 57078
- Phone
- (605) 665-7841
- Enumerated
- Oct 19, 2006
- Record last updated
- Jul 3, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (605) 665-0546
- Medicaid ID
- 6631890 SD
- Medicare enrollment
- Enrolled (PECOS I20090129000639); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 31 in South Dakota → Look up another NPI →
Also registered at 1104 W 8TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brent Adams, MDOrthopaedic Surgery Physician1093930521
- Cassandra Arens, PAPhysician Assistant1033522966
- Sarah ArensPhysician Assistant1669912291
- Amber Authier, PA-CMedical Physician Assistant1518679851
- Clarissa Barnes, M.D.Internal Medicine Physician1770758757
- Leann Bassing, M.D.Rheumatology Physician1871784124
Verify Mary Lee Hochstein Villanueva in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 6096Check 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 hematology & oncology physician in 2024
552 Medicare Part D claims for 150 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Anastrozole96 claims
- Letrozole91 claims
- Levothyroxine Sodium27 claims
- Prednisone22 claims
- Acyclovir18 claims
- Exemestane18 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.
Industry payments in 2024: $78.40
3 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Avera MckennanOneill, NE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Lee Hochstein Villanueva among 31 hematology & oncology physician records in South Dakota
Mary Lee Hochstein Villanueva, MD is one of 31 hematology & oncology physician records with a practice address in South Dakota. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 23% of them.
- NPI issued2006 · 23% of these records are older, 55% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2001 · median 2007 among the 21 with a school on file
- Record last updated2020 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in South Dakota
There are 31 hematology & oncology physician records in South Dakota.
All 31 in South Dakota → Every provider in Yankton → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Max Farver, MDYankton, SD 570781548261548
- Jonathan Bleeker, MDSioux Falls, SD 571041457573974
- Keely Hack, M.D.Sioux Falls, SD 571041184743148
- Michael Keppen, M.D.Sioux Falls, SD 571041881690592
- Miroslaw Mazurczak, M.D.Sioux Falls, SD 571041437155140
- Robert Nelimark, M.D.Sioux Falls, SD 571041669478376
- Steven Powell, M.D.Sioux Falls, SD 571041548454291
- Amy Sanford, M.D.Sioux Falls, SD 571041679708283
Common questions
What is Mary Lee Hochstein Villanueva, MD's NPI number?
Mary Lee Hochstein Villanueva, MD's National Provider Identifier (NPI) is 1699857821, issued on Oct 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Lee Hochstein Villanueva, MD located?
The NPPES record lists a practice address at 1104 W 8TH St, Yankton, SD, 57078. Phone: (605) 665-7841. Providers update this record themselves, so call before visiting.
How can I verify Mary Lee Hochstein Villanueva, MD's license?
NPPES lists South Dakota license number 6096, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Lee Hochstein Villanueva, MD prescribe under Medicare Part D?
In 2024, Mary Lee Hochstein Villanueva, MD had 552 Medicare Part D claims for 150 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.