OLIVER JAMES OATMAN DO
NPI 1780857268
Pediatrics - Pediatric Endocrinology in Phoenix, AZ
About Oliver James Oatman Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OLIVER JAMES OATMAN DO (NPI 1780857268) is an individual pediatric endocrinology provider in Phoenix, Arizona, licensed in Arizona (6354) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in Phoenix, and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2008).
NPPES Registry Identity
Specialties & Licenses 3
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
Oliver James Oatman Do 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 Reassignment
Medicare enrollment records show Oliver Oatman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Phoenix, AZ 85016
- Reassigned Medicare billing, Arizona enrollment
- 1,416 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 85006 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 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PHOENIX, AZ 85006
PHOENIX, AZ 85006
PHOENIX, AZ 85006
PHOENIX, AZ 85006
PHOENIX, AZ 85006
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 Oliver Oatman's NPI number?
The NPI number for Oliver Oatman is 1780857268. It was assigned to this individual provider in the NPPES registry on April 7, 2008.
Where is Oliver Oatman located?
Oliver Oatman practices at 1920 E Cambridge Ave Ste 301, Phoenix, AZ 85006. The listed phone number is (602) 933-0935.
What is Oliver Oatman's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Endocrinology, with taxonomy code 2080P0205X.
Is Oliver Oatman enrolled in Medicare?
Yes. Oliver Oatman 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 organization bills Medicare for Oliver Oatman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Oliver Oatman reassigns Medicare benefits to Phoenix Children's Hospital (Phoenix, AZ). 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 Oliver Oatman'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 Oliver Oatman was last updated on March 26, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.