DR. ZACHARY MICHAEL MESSINA D.O.
NPI 1336674498
Internal Medicine - Critical Care Medicine in Philadelphia, PA
About Dr. Zachary Michael Messina D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ZACHARY MICHAEL MESSINA D.O. (NPI 1336674498) is an individual critical care medicine provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (OS019882) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, is affiliated with Upmc Pinnacle Hospitals, and maintains a secondary practice location in Harrisburg.
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
Dr. Zachary Michael Messina D.o. 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
3Medicare enrollment records show Zachary Messina reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19114
- Reassigned Medicare billing, Pennsylvania enrollment
- 490 clinicians in this Medicare group
Abington, PA 19001
- Reassigned Medicare billing, Pennsylvania enrollment
- 34 clinicians in this Medicare group
Ephrata, PA 17522
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,902 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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Upmc Pinnacle Hospitals
Acute Care Hospitals · Harrisburg, PAAbington Memorial Hospital
Acute Care Hospitals · Abington, PAUpmc Hanover
Acute Care Hospitals · Hanover, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19114 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.
PHILADELPHIA, PA 19114
PHILADELPHIA, PA 19114
PHILADELPHIA, PA 19114
PHILADELPHIA, PA 19114
PHILADELPHIA, PA 19114
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 Zachary Messina's NPI number?
The NPI number for Zachary Messina is 1336674498. It was assigned to this individual provider in the NPPES registry on April 26, 2017.
Where is Zachary Messina located?
Zachary Messina practices at 10800 Knights Rd, Philadelphia, PA 19114. The listed phone number is (215) 612-5161.
What is Zachary Messina's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Zachary Messina enrolled in Medicare?
Yes. Zachary Messina 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 Zachary Messina's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Zachary Messina reassigns Medicare benefits to 3 organizations: Aria Health Physician Services (Philadelphia, PA), Abington Memorial Hospital (Abington, PA) and Pinnacle Health Medical Services (Ephrata, 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 Zachary Messina's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Zachary Messina affiliated with any hospitals?
According to CMS data, Zachary Messina is affiliated with Upmc Pinnacle Hospitals, Abington Memorial Hospital and Upmc Hanover.
When was this NPI record last updated?
The NPPES record for Zachary Messina was last updated on March 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Zachary Michael Messina, D.O. · NPI 1336674498
Critical Care Medicine physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since April 26, 2017.
## Identity
- **NPI:** 1336674498 (Entity type: Individual)
- **Enumerated:** April 26, 2017
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** OS019882 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 10800 KNIGHTS RD, Philadelphia, PA 19114-4200
- **Phone:** (215) 612-5161
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Aria Health Physician Services (NPI 1942471024, Philadelphia, PA); Abington Memorial Hospital (NPI 1275575482, Abington, PA); Pinnacle Health Medical Services (NPI 1043978125, Ephrata, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Marian University College Of Osteopathic Medicine, class of 2017
## Record status
- **NPPES last updated:** March 13, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1336674498) · Data from the CMS NPPES public registry.