KAREN A CASPER M.D.
NPI 1962518738
Emergency Medicine in Oak Bluffs, MA
About Karen A Casper M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN A CASPER M.D. (NPI 1962518738) is an individual emergency medicine provider in Oak Bluffs, Massachusetts, licensed in Massachusetts (159397) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with Martha's Vineyard Hospital Inc, and is a graduate of University Of Texas Medical Branch At Galveston (1995).
NPPES Registry Identity
Specialties & Licenses
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
Karen A Casper M.d. 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
3Medicare enrollment records show Karen Casper reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oak Bluffs, MA 02557
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1194866210 (Massachusetts)
- 184 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Martha's Vineyard Hospital Inc
Critical Access Hospitals · Oak Bluffs, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02557 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.
OAK BLUFFS, MA 02557
OAK BLUFFS, MA 02557
OAK BLUFFS, MA 02557
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 Karen Casper's NPI number?
The NPI number for Karen Casper is 1962518738. It was assigned to this individual provider in the NPPES registry on August 22, 2006.
Where is Karen Casper located?
Karen Casper practices at 1 Hospital Rd, Oak Bluffs, MA 02557. The listed phone number is (508) 957-0111.
What is Karen Casper's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Karen Casper enrolled in Medicare?
Yes. Karen Casper 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 Karen Casper's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Casper reassigns Medicare benefits to 3 organizations: Martha's Vineyard Hospital, Inc. (Oak Bluffs, MA), The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, 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 Karen Casper's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Casper accept?
Health plans from Taro Health list Karen Casper 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.
Is Karen Casper affiliated with any hospitals?
According to CMS data, Karen Casper is affiliated with Martha's Vineyard Hospital Inc.
When was this NPI record last updated?
The NPPES record for Karen Casper was last updated on October 25, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Karen A Casper, M.D. · NPI 1962518738
Emergency Medicine physician in Oak Bluffs, Massachusetts. Individual provider, active in the CMS NPPES registry since August 22, 2006.
## Identity
- **NPI:** 1962518738 (Entity type: Individual)
- **Enumerated:** August 22, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 159397 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 HOSPITAL RD, Oak Bluffs, MA 02557
- **Phone:** (508) 957-0111
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Martha's Vineyard Hospital, Inc. (NPI 1134206386, Oak Bluffs, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical Branch At Galveston, class of 1995
## Record status
- **NPPES last updated:** October 25, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1962518738) · Data from the CMS NPPES public registry.