GILLIAN REED WOODRUFF MD
NPI 1598394496
Internal Medicine in Parker, AZ
About Gillian Reed Woodruff Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GILLIAN REED WOODRUFF MD (NPI 1598394496) is an individual internal medicine provider in Parker, Arizona, licensed in California (A192204) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Emeryville, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Gillian Reed Woodruff 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 Reassignments
6Medicare enrollment records show Gillian Woodruff reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Parker, AZ 85344
- Reassigned Medicare billing, Texas enrollment
- 208 clinicians in this Medicare group
Peach Springs, AZ 86434
- Reassigned Medicare billing, Texas enrollment
- 210 clinicians in this Medicare group
Palm Springs, CA 92262
- Reassigned Medicare billing, California enrollment
- 962 clinicians in this Medicare group
Moapa, NV 89025
- Reassigned Medicare billing, Texas enrollment
- 143 clinicians in this Medicare group
Polacca, AZ 86042
- Reassigned Medicare billing, Texas enrollment
- 199 clinicians in this Medicare group
Newark, CA 94560
- Reassigned Medicare billing, California enrollment
- 900 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 5
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 85344 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.
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 Gillian Woodruff's NPI number?
The NPI number for Gillian Woodruff is 1598394496. It was assigned to this individual provider in the NPPES registry on April 3, 2020.
Where is Gillian Woodruff located?
Gillian Woodruff practices at 12033 Agency Rd, Parker, AZ 85344. The listed phone number is (928) 669-2137.
What is Gillian Woodruff's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Gillian Woodruff enrolled in Medicare?
Yes. Gillian Woodruff 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 Gillian Woodruff's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gillian Woodruff reassigns Medicare benefits to 6 organizations: Dhhs Ihs Phoenix Area (Parker, AZ), Dhhs Ihs Phoenix Area (Peach Springs, AZ), Galen Inpatient Physicians Inc. (Palm Springs, CA), Irene Benn Medical Center (Moapa, NV), Dhhs Ihs Phoenix Area (Polacca, AZ) and 1 more organization, listed in the Medicare section above. 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 Gillian Woodruff'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 Gillian Woodruff was last updated on January 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Gillian Reed Woodruff, MD · NPI 1598394496
Internal Medicine physician in Parker, Arizona. Individual provider, active in the CMS NPPES registry since April 3, 2020.
## Identity
- **NPI:** 1598394496 (Entity type: Individual)
- **Enumerated:** April 3, 2020
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A192204 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 12033 AGENCY RD, Parker, AZ 85344-7718
- **Phone:** (928) 669-2137 · **Fax:** (928) 669-3131
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Dhhs Ihs Phoenix Area (NPI 1851678585, Parker, AZ); Dhhs Ihs Phoenix Area (NPI 1265719934, Peach Springs, AZ); Galen Inpatient Physicians Inc. (NPI 1316037021, Palm Springs, CA); Irene Benn Medical Center (NPI 1841535317, Moapa, NV); Dhhs Ihs Phoenix Area (NPI 1356628028, Polacca, AZ); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** January 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1598394496) · Data from the CMS NPPES public registry.