GARY A. ZACK CRNA
NPI 1336663871
Nurse Anesthetist, Certified Registered in Allentown, PA
About Gary A. Zack Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GARY A. ZACK CRNA (NPI 1336663871) is an individual nurse anesthetist, certified registered in Allentown, Pennsylvania, licensed in Pennsylvania (RN641144) and active in the NPI registry since July 2017. He is affiliated with Lehigh Valley Hospital, maintains a secondary practice location in Bethlehem, and is a graduate of Other (2017).
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
Gary A. Zack Crna 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
6Medicare enrollment records show Gary Zack reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Allentown, PA 18103
- Reassigned Medicare billing, Pennsylvania enrollment
- 256 clinicians in this Medicare group
Allentown, PA 18103
- Reassigned Medicare billing, Pennsylvania enrollment
- 2,895 clinicians in this Medicare group
Bethlehem, PA 18020
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Professional Anesthesia Services Of North America PC
- 177 clinicians in this Medicare group
Forty Fort, PA 18704
- Reassigned Medicare billing, Pennsylvania enrollment
- 25 clinicians in this Medicare group
Troy, PA 16947
- Reassigned Medicare billing, Pennsylvania enrollment
- 76 clinicians in this Medicare group
Melville, NY 11747
- Reassigned Medicare billing, Pennsylvania enrollment
- 928 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 2
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.
Lehigh Valley Hospital
Acute Care Hospitals · Allentown, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 18103 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.
ALLENTOWN, PA 18103
ALLENTOWN, PA 18103
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 Zack's NPI number?
The NPI number for Gary Zack is 1336663871. It was assigned to this individual provider in the NPPES registry on July 26, 2017.
Where is Gary Zack located?
Gary Zack practices at 1200 S Cedar Crest Blvd, Allentown, PA 18103. The listed phone number is (610) 402-8001.
What is Gary Zack's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Gary Zack enrolled in Medicare?
Yes. Gary Zack 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 Zack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gary Zack reassigns Medicare benefits to 6 organizations: Lehigh Valley Anesthesia Services, P. C. (Allentown, PA), Lehigh Valley Physician Group (Allentown, PA), Professional Anesthesia Services Of North America P.C. (Bethlehem, PA), Forty Fort Anesthesia Associates LLC (Forty Fort, PA), Gulfstream Anesthesia Consultants PA (Troy, PA) and 1 more organization, 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 Zack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gary Zack affiliated with any hospitals?
According to CMS data, Gary Zack is affiliated with Lehigh Valley Hospital.
When was this NPI record last updated?
The NPPES record for Gary Zack was last updated on February 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Gary A. Zack, CRNA · NPI 1336663871
Nurse Anesthetist, Certified Registered physician in Allentown, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 26, 2017.
## Identity
- **NPI:** 1336663871 (Entity type: Individual)
- **Enumerated:** July 26, 2017
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** RN641144 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 1200 S CEDAR CREST BLVD, Allentown, PA 18103-6202
- **Phone:** (610) 402-8001 · **Fax:** (610) 402-8240
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Lehigh Valley Anesthesia Services, P. C. (NPI 1730174731, Allentown, PA); Lehigh Valley Physician Group (NPI 1104990969, Allentown, PA); Professional Anesthesia Services Of North America P.C. (NPI 1972994820, Bethlehem, PA); Forty Fort Anesthesia Associates LLC (NPI 1346600038, Forty Fort, PA); Gulfstream Anesthesia Consultants PA (NPI 1992713242, Troy, PA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** February 25, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1336663871) · Data from the CMS NPPES public registry.