WILLIAM W BROWN III MD
NPI 1649283920
Obstetrics & Gynecology in Denver, CO
About William W Brown Iii Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM W BROWN III MD (NPI 1649283920) is an individual obstetrics & gynecology provider in Denver, Colorado, licensed in Colorado (39008) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William W Brown Iii Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Brown reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Denver, CO 80204
- Reassigned Medicare billing, Colorado enrollment
- 2,259 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 80204 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DENVER, CO 80204
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 Brown's NPI number?
The NPI number for William Brown is 1649283920. It was assigned to this individual provider in the NPPES registry on August 15, 2006.
Where is William Brown located?
William Brown practices at 777 Bannock St Mc 0660, Denver, CO 80204. The listed phone number is (303) 602-9717.
What is William Brown's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is William Brown enrolled in Medicare?
Yes. William Brown is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Brown's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Brown reassigns Medicare benefits to Denver Health And Hospital Authority (Denver, CO). 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 Brown's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Brown was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# William W Brown III, MD · NPI 1649283920
Obstetrics & Gynecology physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since August 15, 2006.
## Identity
- **NPI:** 1649283920 (Entity type: Individual)
- **Enumerated:** August 15, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 39008 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 777 BANNOCK ST, MC 0660, Denver, CO 80204-4507
- **Phone:** (303) 602-9717
## 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:** Denver Health And Hospital Authority (NPI 1477569838, Denver, CO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicaid 91251222 (CO); Medicare UPIN A48685; Medicare ID-Type Unspecified D11524 (CO)
---
Source: [NPI Profile](https://npiprofile.com/npi/1649283920) · Data from the CMS NPPES public registry.