DR. DIANA GUILLAUME MD
NPI 1154999878
Family Medicine in Philadelphia, PA
About Dr. Diana Guillaume Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DIANA GUILLAUME MD (NPI 1154999878) is an individual family medicine provider in Philadelphia, Pennsylvania, licensed in New Jersey (25MA12930400) and active in the NPI registry since June 2021. She is enrolled in Medicare PECOS, is affiliated with Temple University Hospital, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Dr. Diana Guillaume 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
2Medicare enrollment records show Diana Guillaume reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19111
- Reassigned Medicare billing, Pennsylvania enrollment
- 447 clinicians in this Medicare group
West Orange, NJ 07052
- Reassigned Medicare billing, New Jersey enrollment
- 428 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
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Temple University Hospital
Acute Care Hospitals · Philadelphia, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19111 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 2
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 Diana Guillaume's NPI number?
The NPI number for Diana Guillaume is 1154999878. It was assigned to this individual provider in the NPPES registry on June 17, 2021.
Where is Diana Guillaume located?
Diana Guillaume practices at 7602 Central Ave Ste 101, Philadelphia, PA 19111. The listed phone number is (215) 969-2900.
What is Diana Guillaume's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Diana Guillaume enrolled in Medicare?
Yes. Diana Guillaume 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 Diana Guillaume's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Guillaume reassigns Medicare benefits to 2 organizations: Temple Physicians Inc. (Philadelphia, PA) and Rwjbh Primary Care Services (West Orange, NJ). 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 Diana Guillaume's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diana Guillaume accept?
Health plans from Oscar Health list Diana Guillaume 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.
Is Diana Guillaume affiliated with any hospitals?
According to CMS data, Diana Guillaume is affiliated with Temple University Hospital.
When was this NPI record last updated?
The NPPES record for Diana Guillaume was last updated on October 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 days 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.
# Dr. Diana Guillaume, MD · NPI 1154999878
Family Medicine physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since June 17, 2021.
## Identity
- **NPI:** 1154999878 (Entity type: Individual)
- **Enumerated:** June 17, 2021
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 25MA12930400 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 7602 CENTRAL AVE STE 101, Philadelphia, PA 19111-2443
- **Phone:** (215) 969-2900 · **Fax:** (215) 969-1856
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Temple Physicians Inc. (NPI 1073664249, Philadelphia, PA); Rwjbh Primary Care Services (NPI 1265037501, West Orange, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** October 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1154999878) · Data from the CMS NPPES public registry.