JOHN MASHIKIAN MD
NPI 1457344574
Anesthesiology in Brockton, MA
About John Mashikian Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN MASHIKIAN MD (NPI 1457344574) is an individual anesthesiology provider in Brockton, Massachusetts, licensed in Rhode Island (MD11923) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS and is a graduate of State University Of New York At Stony Brook, School Of Medicine (1990).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 14
Accepted Insurance
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
John Mashikian 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
2Medicare enrollment records show John Mashikian reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Middleton, MA 01949
- Reassigned Medicare billing, Massachusetts enrollment
- 98 clinicians in this Medicare group
Hyannis, MA 02601
- Reassigned Medicare billing, Massachusetts enrollment
- 29 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.
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.
BROCKTON, MA 02302
BROCKTON, MA 02302
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 John Mashikian's NPI number?
The NPI number for John Mashikian is 1457344574. It was assigned to this individual provider in the NPPES registry on August 24, 2005.
Where is John Mashikian located?
John Mashikian practices at 680 Centre St, Brockton, MA 02302. The listed phone number is (401) 490-2130.
What is John Mashikian's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Mashikian enrolled in Medicare?
Yes. John Mashikian 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 John Mashikian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Mashikian reassigns Medicare benefits to 2 organizations: Icon Anesthesia Services Of New England LLC (Middleton, MA) and On Demand Anesthesia LLC (Hyannis, 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 John Mashikian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Mashikian accept?
Health plans from Taro Health list John Mashikian as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Mashikian was last updated on June 25, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# John Mashikian, MD · NPI 1457344574
Anesthesiology physician in Brockton, Massachusetts. Individual provider, active in the CMS NPPES registry since August 24, 2005.
## Identity
- **NPI:** 1457344574 (Entity type: Individual)
- **Enumerated:** August 24, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MD11923 (Rhode Island)
- **Sole proprietor:** No
## Practice location
- **Address:** 680 CENTRE ST, Brockton, MA 02302-3308
- **Phone:** (401) 490-2130 · **Fax:** (401) 435-2483
## 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): Icon Anesthesia Services Of New England LLC (NPI 1629583323, Middleton, MA); On Demand Anesthesia LLC (NPI 1639865728, Hyannis, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Stony Brook, School Of Medicine, class of 1990
## Record status
- **NPPES last updated:** June 25, 2008
- **Other identifiers:** Other 1457344574 (MA); Other 39845; Other AA117151 (MA); and 11 more
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Source: [NPI Profile](https://npiprofile.com/npi/1457344574) · Data from the CMS NPPES public registry.