JAMES MICHAEL O'BRIEN M.D.
NPI 1902203573
Obstetrics & Gynecology - Maternal & Fetal Medicine in Hershey, PA
About James Michael O'brien M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES MICHAEL O'BRIEN M.D. (NPI 1902203573) is an individual maternal & fetal medicine provider in Hershey, Pennsylvania, licensed in Pennsylvania (MD456780) and active in the NPI registry since November 2014. He is enrolled in Medicare PECOS and maintains a secondary practice location in York.
NPPES Registry Identity
Specialties & Licenses 2
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 (PECOS)
James Michael O'brien M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show James O'brien reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hershey, PA 17033
- Reassigned Medicare billing, Pennsylvania enrollment
- 2,216 clinicians in this Medicare group
Hershey, PA 17033
- Reassigned Medicare billing, Pennsylvania enrollment
- 994 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 17033 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
HERSHEY, PA 17033
HERSHEY, PA 17033
HERSHEY, PA 17033
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 James O'brien's NPI number?
The NPI number for James O'brien is 1902203573. It was assigned to this individual provider in the NPPES registry on November 26, 2014.
Where is James O'brien located?
James O'brien practices at 500 University Dr, Hershey, PA 17033. The listed phone number is (800) 243-1455.
What is James O'brien's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is James O'brien enrolled in Medicare?
Yes. James O'brien is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for James O'brien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James O'brien reassigns Medicare benefits to 2 organizations: The Milton S Hershey Medical Center Physicians Group (Hershey, PA) and Penn State Health Medical Group, LLC (Hershey, PA). 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 James O'brien'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 James O'brien was last updated on March 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.