DR. WILLIAM K MAYFIELD MD
NPI 1619974284
Obstetrics & Gynecology in Vincennes, IN
About Dr. William K Mayfield Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM K MAYFIELD MD (NPI 1619974284) is an individual obstetrics & gynecology provider in Vincennes, Indiana, licensed in Indiana (01036429A) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Vincennes.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. William K Mayfield Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Mayfield reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Vincennes, IN 47591
- Reassigned Medicare billing, Indiana enrollment
- 171 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 47591 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
VINCENNES, IN 47591
VINCENNES, IN 47591
VINCENNES, IN 47591
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 William Mayfield's NPI number?
The NPI number for William Mayfield is 1619974284. It was assigned to this individual provider in the NPPES registry on June 28, 2005.
Where is William Mayfield located?
William Mayfield practices at 700 Willow St Ste 203, Vincennes, IN 47591. The listed phone number is (812) 882-1000.
What is William Mayfield's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is William Mayfield enrolled in Medicare?
Yes. William Mayfield is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Mayfield's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Mayfield reassigns Medicare benefits to Good Samaritan Hospital Physician Services, Inc (Vincennes, IN). 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 William Mayfield's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Mayfield accept?
Health plans from Anthem Blue Cross and Blue Shield and CareSource list William Mayfield 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 William Mayfield was last updated on April 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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. William K Mayfield, MD · NPI 1619974284
Obstetrics & Gynecology physician in Vincennes, Indiana. Individual provider, active in the CMS NPPES registry since June 28, 2005.
## Identity
- **NPI:** 1619974284 (Entity type: Individual)
- **Enumerated:** June 28, 2005
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 01036429A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 700 WILLOW ST STE 203, Vincennes, IN 47591-1029
- **Phone:** (812) 882-1000 · **Fax:** (812) 885-1004
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Good Samaritan Hospital Physician Services, Inc (NPI 1336576875, Vincennes, IN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 8, 2025
- **Other identifiers:** Other 000000350322; Medicaid 200040760A (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1619974284) · Data from the CMS NPPES public registry.