JOHNNY LEE ISENBERGER
NPI 1497987028
Nurse Practitioner in Worcester, MA
About Johnny Lee Isenberger NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHNNY LEE ISENBERGER (NPI 1497987028) is an individual nurse practitioner in Worcester, Massachusetts, licensed in Massachusetts (250929) and active in the NPI registry since August 2009. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Healthalliance Hospitals, and maintains a secondary practice location in Worcester.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 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
Johnny Lee Isenberger 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 Johnny Isenberger reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Worcester, MA 01655
- Reassigned Medicare billing, Massachusetts enrollment
- 2,902 clinicians in this Medicare group
Medford, MA 02155
- Reassigned Medicare billing, Massachusetts enrollment
- Medicare enrollment name: Melrosewakefield Healthcare, Inc
- 140 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Umass Memorial Healthalliance Hospitals
Acute Care Hospitals · Leominster, MAUmass Memorial Medical Center/University Campus
Acute Care Hospitals · Worcester, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01655 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.
WORCESTER, MA 01655
WORCESTER, MA 01655
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 Johnny Isenberger's NPI number?
The NPI number for Johnny Isenberger is 1497987028. It was assigned to this individual provider in the NPPES registry on August 15, 2009.
Where is Johnny Isenberger located?
Johnny Isenberger practices at 55 Lake Ave N, Worcester, MA 01655. The listed phone number is (774) 441-6468.
What is Johnny Isenberger's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Johnny Isenberger enrolled in Medicare?
Yes. Johnny Isenberger 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 Johnny Isenberger's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Johnny Isenberger reassigns Medicare benefits to 2 organizations: Umass Memorial Medical Group Inc (Worcester, MA) and Hallmark Health System Inc (Medford, MA). 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 Johnny Isenberger's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Johnny Isenberger affiliated with any hospitals?
According to CMS data, Johnny Isenberger is affiliated with Umass Memorial Healthalliance Hospitals and Umass Memorial Medical Center/University Campus.
When was this NPI record last updated?
The NPPES record for Johnny Isenberger was last updated on January 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Johnny Lee Isenberger · NPI 1497987028
Nurse Practitioner physician in Worcester, Massachusetts. Individual provider, active in the CMS NPPES registry since August 15, 2009.
## Identity
- **NPI:** 1497987028 (Entity type: Individual)
- **Enumerated:** August 15, 2009
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 250929 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 LAKE AVE N, Worcester, MA 01655-0002
- **Phone:** (774) 441-6468
## 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): Umass Memorial Medical Group Inc (NPI 1760445373, Worcester, MA); Hallmark Health System Inc (NPI 1275673667, Medford, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** January 31, 2025
- **Other identifiers:** Medicaid 110084311A (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1497987028) · Data from the CMS NPPES public registry.