DR. SYDNEY SAMUEL CASH MD PHD
NPI 1265415616
Psychiatry & Neurology - Neurology in Boston, MA
About Dr. Sydney Samuel Cash Md Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SYDNEY SAMUEL CASH MD PHD (NPI 1265415616) is an individual neurology provider in Boston, Massachusetts, licensed in Massachusetts (220547) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Columbia University College Of Physicians And Surgeons (2000).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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
Dr. Sydney Samuel Cash Md Phd 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 Sydney Cash reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
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.
Areas of Expertise CMS Part B claims 5
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.
North Shore Medical Center -
Acute Care Hospitals · Salem, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Sydney Cash's NPI number?
The NPI number for Sydney Cash is 1265415616. It was assigned to this individual provider in the NPPES registry on November 21, 2005.
Where is Sydney Cash located?
Sydney Cash practices at 15 Parkman St Wac 835, Boston, MA 02114. The listed phone number is (617) 726-3311.
What is Sydney Cash's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Sydney Cash enrolled in Medicare?
Yes. Sydney Cash 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 Sydney Cash's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sydney Cash reassigns Medicare benefits to 2 organizations: 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 Sydney Cash's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sydney Cash accept?
Health plans from WellSense Health Plan list Sydney Cash 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 Sydney Cash affiliated with any hospitals?
According to CMS data, Sydney Cash is affiliated with North Shore Medical Center - and Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Sydney Cash was last updated on August 28, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Dr. Sydney Samuel Cash, MD PHD · NPI 1265415616
Neurology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since November 21, 2005.
## Identity
- **NPI:** 1265415616 (Entity type: Individual)
- **Enumerated:** November 21, 2005
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 220547 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 15 PARKMAN ST, WAC 835, Boston, MA 02114-3117
- **Phone:** (617) 726-3311 · **Fax:** (617) 726-9250
## 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): 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:** Columbia University College Of Physicians And Surgeons, class of 2000
## Record status
- **NPPES last updated:** August 28, 2012
- **Other identifiers:** Medicare ID-Type Unspecified A37525 (MA); Medicare UPIN I15101; Medicaid 2079615 (MA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1265415616) · Data from the CMS NPPES public registry.