Dr. Mary Lee Villanueva MD
Also known as
- Formerly known asHochstein, Mary Lee
Source: NPPES public registry.
About this NPIWhat this record shows.
NPI 1699857821 is registered to Dr. Mary Lee Villanueva MD, a Hematology & Oncology practising at 1104 W 8th St in Yankton, South Dakota. Hematology & Oncology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Mary Lee Villanueva MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Beyond the registryWhat this record adds.
This record carries 1 secondary identifier beyond the base NPI: Medicaid and other payer cross-references used by billers and credentialers, which the standard CMS NPPES lookup does not surface. It is enrolled in Medicare, linking to 2 PECOS enrollment records (each with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 40 Hematology & Oncology providers on file in South Dakota.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Medicaid
- 6631890SD
Source: NPPES public registry.
Medicare enrollment
This provider holds 2 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20071004000811Hematology/OncologySD
- I20090129000639Medical OncologyNE
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. Mary Lee Villanueva MD accepts. To confirm in-network status with your specific health plan, contact Dr. Mary Lee Villanueva MD directly at (605) 665-7841.
Frequently asked
Yes. NPI 1699857821 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Hematology & Oncology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (605) 665-7841.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Dr. Mary Lee Villanueva MD is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 40 Hematology & Oncology providers are registered in South Dakota, and Dr. Mary Lee Villanueva MD is one of them. The figure refreshes each month from the federal source.