NATHANIEL GREENWOOD D.O.
NPI 1770798563
Emergency Medicine in Cedar Park, TX
About Nathaniel Greenwood D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NATHANIEL GREENWOOD D.O. (NPI 1770798563) is an individual emergency medicine provider in Cedar Park, Texas, licensed in Texas (P2863) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in Omaha, and is a graduate of Pennsylvania State University College Of Medicine (2008).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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 (PECOS)
Nathaniel Greenwood D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Nathaniel Greenwood reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Round Rock, TX 78681
- Reassigned Medicare billing, Texas enrollment
- 81 clinicians in this Medicare group
Austin, TX 78732
- Reassigned Medicare billing, Texas enrollment
- 93 clinicians in this Medicare group
San Antonio, TX 78250
- Reassigned Medicare billing, Texas enrollment
- 11 clinicians in this Medicare group
Omaha, NE 68137
- Reassigned Medicare billing, Nebraska enrollment
- 5 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 78613 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CEDAR PARK, TX 78613
CEDAR PARK, TX 78613
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 Nathaniel Greenwood's NPI number?
The NPI number for Nathaniel Greenwood is 1770798563. It was assigned to this individual provider in the NPPES registry on May 14, 2007.
Where is Nathaniel Greenwood located?
Nathaniel Greenwood practices at 3620 E Whitestone Blvd, Cedar Park, TX 78613. The listed phone number is (512) 260-2732.
What is Nathaniel Greenwood's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Nathaniel Greenwood enrolled in Medicare?
Yes. Nathaniel Greenwood is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nathaniel Greenwood's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Greenwood reassigns Medicare benefits to 4 organizations: Brushy Creek Emergency Physicians PLLC (Round Rock, TX), Lake Travis Emergency Physicians, PLLC (Austin, TX), Bandera Emergency Physicians, PLLC (San Antonio, TX) and Nebraska Medical Clinics PLLC (Omaha, NE). 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 Nathaniel Greenwood's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nathaniel Greenwood accept?
Health plans from Blue Cross and Blue Shield of Texas, Oscar Insurance Company and Sendero Health Plans, Local Nonprofit list Nathaniel Greenwood 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 Nathaniel Greenwood was last updated on March 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Nathaniel Greenwood, D.O. · NPI 1770798563
Emergency Medicine physician in Cedar Park, Texas. Individual provider, active in the CMS NPPES registry since May 14, 2007.
## Identity
- **NPI:** 1770798563 (Entity type: Individual)
- **Enumerated:** May 14, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** P2863 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 3620 E WHITESTONE BLVD, Cedar Park, TX 78613-7441
- **Phone:** (512) 260-2732
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Brushy Creek Emergency Physicians PLLC (NPI 1235773151, Round Rock, TX); Lake Travis Emergency Physicians, PLLC (NPI 1851803688, Austin, TX); Bandera Emergency Physicians, PLLC (NPI 1649994930, San Antonio, TX); Nebraska Medical Clinics PLLC (NPI 1952289571, Omaha, NE) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Pennsylvania State University College Of Medicine, class of 2008
## Record status
- **NPPES last updated:** March 25, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1770798563) · Data from the CMS NPPES public registry.