DR. GARY DAVID ZIMMER MD
NPI 1053368407
Emergency Medicine in Reading, PA
About Dr. Gary David Zimmer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GARY DAVID ZIMMER MD (NPI 1053368407) is an individual emergency medicine provider in Reading, Pennsylvania, licensed in Pennsylvania (MD427612) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Wynn Hospital, and maintains a secondary practice location in Wakefield.
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
Dr. Gary David Zimmer 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
18Medicare enrollment records show Gary Zimmer reassigns Medicare billing to 18 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Langhorne, PA 19047
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Emergency Care Services Of Pennsylvania PC
- 329 clinicians in this Medicare group
Voorhees, NJ 08043
- Reassigned Medicare billing, New Jersey enrollment
- 332 clinicians in this Medicare group
Hanover, PA 17331
- Reassigned Medicare billing, Pennsylvania enrollment
- 298 clinicians in this Medicare group
Summit, NJ 07901
- Reassigned Medicare billing, New Jersey enrollment
- 436 clinicians in this Medicare group
Frederick, MD 21701
- Reassigned Medicare billing, Maryland enrollment
- 91 clinicians in this Medicare group
Poughkeepsie, NY 12601
- Reassigned Medicare billing, New York enrollment
- 356 clinicians in this Medicare group
Utica, NY 13502
- Reassigned Medicare billing, New York enrollment
- 657 clinicians in this Medicare group
Wakefield, RI 02879
- Reassigned Medicare billing, Rhode Island enrollment
- 67 clinicians in this Medicare group
Aiken, SC 29801
- Reassigned Medicare billing, South Carolina enrollment
- 187 clinicians in this Medicare group
Brentwood, TN 37027
- Reassigned Medicare billing, Mississippi and Tennessee enrollments
- 65 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 4
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.
Wynn Hospital
Acute Care Hospitals · Utica, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19605 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.
READING, PA 19605
READING, PA 19605
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 Gary Zimmer's NPI number?
The NPI number for Gary Zimmer is 1053368407. It was assigned to this individual provider in the NPPES registry on May 30, 2006.
Where is Gary Zimmer located?
Gary Zimmer practices at 2500 Bernville Rd, Reading, PA 19605. The listed phone number is (215) 710-5900.
What is Gary Zimmer's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Gary Zimmer enrolled in Medicare?
Yes. Gary Zimmer 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 Gary Zimmer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gary Zimmer reassigns Medicare benefits to 18 organizations: Emergency Care Services Of Pennsylvania, P.C. (Langhorne, PA), Emergency Physician Associates Of South Jersey P C (Voorhees, NJ), Emergency Physician Associates Of Pennsylvania, PC (Hanover, PA), Emergency Physician Associates Of North Jersey P C (Summit, NJ), Hospitalist Medicine Physicians Of Maryland-Frederick PC (Frederick, MD) and 13 more organizations, 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 Gary Zimmer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gary Zimmer affiliated with any hospitals?
According to CMS data, Gary Zimmer is affiliated with Wynn Hospital.
When was this NPI record last updated?
The NPPES record for Gary Zimmer was last updated on August 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Gary David Zimmer, MD · NPI 1053368407
Emergency Medicine physician in Reading, Pennsylvania. Individual provider, active in the CMS NPPES registry since May 30, 2006.
## Identity
- **NPI:** 1053368407 (Entity type: Individual)
- **Enumerated:** May 30, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD427612 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 2500 BERNVILLE RD, Reading, PA 19605-9453
- **Phone:** (215) 710-5900 · **Fax:** (866) 789-6895
## 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:** 18 organizations under Medicare reassignment (form CMS-855R): Emergency Care Services Of Pennsylvania, P.C. (NPI 1114955010, Langhorne, PA); Emergency Physician Associates Of South Jersey P C (NPI 1215965231, Voorhees, NJ); Emergency Physician Associates Of Pennsylvania, PC (NPI 1619990900, Hanover, PA); Emergency Physician Associates Of North Jersey P C (NPI 1497783419, Summit, NJ); Hospitalist Medicine Physicians Of Maryland-Frederick PC (NPI 1093322257, Frederick, MD); and 13 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1997
## Record status
- **NPPES last updated:** August 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1053368407) · Data from the CMS NPPES public registry.