JOSHUA RALSTON M.D.
NPI 1962142364
Hospitalist in Milton, MA
About Joshua Ralston M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSHUA RALSTON M.D. (NPI 1962142364) is an individual hospitalist provider in Milton, Massachusetts, licensed in Massachusetts (1023578) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Medical Center, and maintains a secondary practice location in Longmont.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Joshua Ralston 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
4Medicare enrollment records show Joshua Ralston reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1497151773 (Massachusetts)
- 1,006 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 2,579 clinicians in this Medicare group
Lamar, CO 81052
- Reassigned Medicare billing, Colorado enrollment
- 1,193 clinicians in this Medicare group
Arvada, CO 80004
- Reassigned Medicare billing, Colorado enrollment
- 78 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Beth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MABeth Israel Deaconess Hospital - Milton
Acute Care Hospitals · Milton, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02186 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.
MILTON, MA 02186
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 Joshua Ralston's NPI number?
The NPI number for Joshua Ralston is 1962142364. It was assigned to this individual provider in the NPPES registry on April 1, 2022.
Where is Joshua Ralston located?
Joshua Ralston practices at 199 Reedsdale Rd, Milton, MA 02186. The listed phone number is (617) 696-4600.
What is Joshua Ralston's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Joshua Ralston enrolled in Medicare?
Yes. Joshua Ralston 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 Joshua Ralston's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joshua Ralston reassigns Medicare benefits to 4 organizations: Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (Boston, MA), Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA), Catholic Health Initiatives Colorado (Lamar, CO) and Long Term Care And Rehab Consultants (Arvada, CO). 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 Joshua Ralston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joshua Ralston accept?
Health plans from Taro Health list Joshua Ralston 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 Joshua Ralston affiliated with any hospitals?
According to CMS data, Joshua Ralston is affiliated with Beth Israel Deaconess Medical Center and Beth Israel Deaconess Hospital - Milton.
When was this NPI record last updated?
The NPPES record for Joshua Ralston was last updated on January 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Joshua Ralston, M.D. · NPI 1962142364
Hospitalist physician in Milton, Massachusetts. Individual provider, active in the CMS NPPES registry since April 1, 2022.
## Identity
- **NPI:** 1962142364 (Entity type: Individual)
- **Enumerated:** April 1, 2022
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 1023578 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 199 REEDSDALE RD, Milton, MA 02186-3900
- **Phone:** (617) 696-4600
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (NPI 1861216038, Boston, MA); Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1194765438, Boston, MA); Catholic Health Initiatives Colorado (NPI 1679182315, Lamar, CO); Long Term Care And Rehab Consultants (NPI 1306946728, Arvada, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Kansas School Of Med, class of 2022
## Record status
- **NPPES last updated:** January 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1962142364) · Data from the CMS NPPES public registry.