DOUGLAS MAYO
NPI 1942674254
Nurse Practitioner - Family in Weldon Spring, MO
About Douglas Mayo NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DOUGLAS MAYO (NPI 1942674254) is an individual family provider in Weldon Spring, Missouri, licensed in Missouri (2015032884) and active in the NPI registry since November 2015. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Lincoln, and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses
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
Douglas Mayo 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 Reassignments
3Medicare enrollment records show Douglas Mayo reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: Emergency Physicians Of St Lukes LLC
- 124 clinicians in this Medicare group
Wentzville, MO 63385
- Reassigned Medicare billing, Missouri enrollment
- 46 clinicians in this Medicare group
Winfield, MO 63389
- Reassigned Medicare billing, Missouri enrollment
- 229 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Lincoln
Critical Access Hospitals · Troy, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Douglas Mayo's NPI number?
The NPI number for Douglas Mayo is 1942674254. It was assigned to this individual provider in the NPPES registry on November 24, 2015.
Where is Douglas Mayo located?
Douglas Mayo practices at 1051 Wolfrum Rd, Weldon Spring, MO 63304. The listed phone number is (636) 300-0370.
What is Douglas Mayo's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Douglas Mayo enrolled in Medicare?
Yes. Douglas Mayo 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 organizations bill Medicare for Douglas Mayo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Douglas Mayo reassigns Medicare benefits to 3 organizations: Emergency Physicians Of St. Luke's, LLC (Chesterfield, MO), Our Urgent Care, LLC (Wentzville, MO) and Mercy Hospital Lincoln (Winfield, MO). Each 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 Douglas Mayo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Douglas Mayo accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 4 other insurers list Douglas Mayo 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.
Is Douglas Mayo affiliated with any hospitals?
According to CMS data, Douglas Mayo is affiliated with Mercy Hospital Lincoln.
When was this NPI record last updated?
The NPPES record for Douglas Mayo was last updated on November 24, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Douglas Mayo · NPI 1942674254
Family physician in Weldon Spring, Missouri. Individual provider, active in the CMS NPPES registry since November 24, 2015.
## Identity
- **NPI:** 1942674254 (Entity type: Individual)
- **Enumerated:** November 24, 2015
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 2015032884 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1051 WOLFRUM RD, Weldon Spring, MO 63304-7625
- **Phone:** (636) 300-0370
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Emergency Physicians Of St. Luke's, LLC (NPI 1215359815, Chesterfield, MO); Our Urgent Care, LLC (NPI 1902815863, Wentzville, MO); Mercy Hospital Lincoln (NPI 1386040178, Winfield, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** November 24, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1942674254) · Data from the CMS NPPES public registry.