DR. VALERIE KIM NELSON-MASON MD
NPI 1316986508
Obstetrics & Gynecology in Saint Charles, MO
About Dr. Valerie Kim Nelson-mason Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. VALERIE KIM NELSON-MASON MD (NPI 1316986508) is an individual obstetrics & gynecology provider in Saint Charles, Missouri, licensed in Missouri (2005000368) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Valerie Kim Nelson-mason Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Valerie Nelson-mason reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Charles, MO 63301
- Reassigned Medicare billing, Missouri enrollment
- 741 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT CHARLES, MO 63301
SAINT CHARLES, MO 63301
SAINT CHARLES, MO 63301
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Valerie Nelson-mason's NPI number?
The NPI number for Valerie Nelson-mason is 1316986508. It was assigned to this individual provider in the NPPES registry on June 5, 2006.
Where is Valerie Nelson-mason located?
Valerie Nelson-mason practices at 330 1st Capitol Dr Suite 340, Saint Charles, MO 63301. The listed phone number is (636) 255-3003.
What is Valerie Nelson-mason's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Valerie Nelson-mason enrolled in Medicare?
Yes. Valerie Nelson-mason is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Valerie Nelson-mason's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Valerie Nelson-mason reassigns Medicare benefits to Ssm Health Care St. Louis (Saint Charles, MO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Valerie Nelson-mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Valerie Nelson-mason accept?
Health plans from Anthem Blue Cross and Blue Shield list Valerie Nelson-mason as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Valerie Nelson-mason was last updated on October 9, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Valerie Kim Nelson-Mason, MD · NPI 1316986508
Obstetrics & Gynecology physician in Saint Charles, Missouri. Individual provider, active in the CMS NPPES registry since June 5, 2006.
## Identity
- **NPI:** 1316986508 (Entity type: Individual)
- **Enumerated:** June 5, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 2005000368 (Missouri)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 330 1ST CAPITOL DR, SUITE 340, Saint Charles, MO 63301-2835
- **Phone:** (636) 255-3003 · **Fax:** (636) 925-0954
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Ssm Health Care St. Louis (NPI 1427002922, Saint Charles, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Diego School Of Medicine, class of 1995
## Record status
- **NPPES last updated:** October 9, 2014
- **Other identifiers:** Medicare UPIN G95982 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1316986508) · Data from the CMS NPPES public registry.