ERIK CAESAR PARENA
NPI 1487920328
Nurse Anesthetist, Certified Registered in Winchester, MA
About Erik Caesar Parena NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ERIK CAESAR PARENA (NPI 1487920328) is an individual nurse anesthetist, certified registered in Winchester, Massachusetts, licensed in Massachusetts (270027) and active in the NPI registry since March 2012. He is enrolled in Medicare PECOS and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses
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
Erik Caesar Parena 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
5Medicare enrollment records show Erik Parena reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Winchester, MA 01890
- Reassigned Medicare billing, Massachusetts enrollment
- 105 clinicians in this Medicare group
Stoneham, MA 02180
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1730113325 (Massachusetts)
- 65 clinicians in this Medicare group
Lowell, MA 01851
- Reassigned Medicare billing, Massachusetts enrollment
- 60 clinicians in this Medicare group
Acton, MA 01720
- Reassigned Medicare billing, Massachusetts enrollment
- 125 clinicians in this Medicare group
Fall River, MA 02721
- Reassigned Medicare billing, Massachusetts enrollment
- 347 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 3
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01890 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WINCHESTER, MA 01890
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 Erik Parena's NPI number?
The NPI number for Erik Parena is 1487920328. It was assigned to this individual provider in the NPPES registry on March 26, 2012.
Where is Erik Parena located?
Erik Parena practices at 41 Highland Ave., Winchester, MA 01890. The listed phone number is (781) 756-7243.
What is Erik Parena's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Erik Parena enrolled in Medicare?
Yes. Erik Parena 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 Erik Parena's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Erik Parena reassigns Medicare benefits to 5 organizations: Winchester Anesthesia Associates, Inc (Winchester, MA), Dha Endoscopy LLC (Stoneham, MA), Lowell Anesthesia Associates PLLC (Lowell, MA), Gbaa Holdings, PLLC (Acton, MA) and Steward Medical Group, Inc (Fall River, 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 Erik Parena's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Erik Parena was last updated on May 10, 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.
# Erik Caesar Parena · NPI 1487920328
Nurse Anesthetist, Certified Registered physician in Winchester, Massachusetts. Individual provider, active in the CMS NPPES registry since March 26, 2012.
## Identity
- **NPI:** 1487920328 (Entity type: Individual)
- **Enumerated:** March 26, 2012
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 270027 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 41 HIGHLAND AVE., Winchester, MA 01890
- **Phone:** (781) 756-7243
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Winchester Anesthesia Associates, Inc (NPI 1972626117, Winchester, MA); Dha Endoscopy LLC (NPI 1851921555, Stoneham, MA); Lowell Anesthesia Associates PLLC (NPI 1063938934, Lowell, MA); Gbaa Holdings, PLLC (NPI 1790299592, Acton, MA); Steward Medical Group, Inc (NPI 1043711914, Fall River, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** May 10, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1487920328) · Data from the CMS NPPES public registry.