CAILYN HEREEN ROOD MD
NPI 1003159336
Pediatrics - Pediatric Critical Care Medicine in Boston, MA
About Cailyn Hereen Rood Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAILYN HEREEN ROOD MD (NPI 1003159336) is an individual pediatric critical care medicine provider in Boston, Massachusetts, licensed in Massachusetts (270303) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 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 (PECOS)
Cailyn Hereen Rood Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Cailyn Rood reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 1,358 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 220 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 86 clinicians in this Medicare group
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 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.
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 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Cailyn Rood's NPI number?
The NPI number for Cailyn Rood is 1003159336. It was assigned to this individual provider in the NPPES registry on April 4, 2013.
Where is Cailyn Rood located?
Cailyn Rood practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.
What is Cailyn Rood's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.
Is Cailyn Rood enrolled in Medicare?
Yes. Cailyn Rood is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Cailyn Rood's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cailyn Rood reassigns Medicare benefits to 4 organizations: Children's Hospital Pediatric Associates, Inc (Boston, MA), Boston Childrens Heart Foundation Inc (Boston, MA), Chmc Anesthesia Foundation Inc (Boston, MA) and The Medical College Of Wisconsin, Inc. (Milwaukee, WI). 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 Cailyn Rood's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cailyn Rood accept?
Health plans from Taro Health list Cailyn Rood 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 Cailyn Rood was last updated on June 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Cailyn Hereen Rood, MD · NPI 1003159336
Pediatric Critical Care Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 4, 2013.
## Identity
- **NPI:** 1003159336 (Entity type: Individual)
- **Enumerated:** April 4, 2013
- **Primary specialty:** Pediatrics - Pediatric Critical Care Medicine · taxonomy 2080P0203X
- **State license:** 270303 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115-5724
- **Phone:** (617) 355-6000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Children's Hospital Pediatric Associates, Inc (NPI 1457306664, Boston, MA); Boston Childrens Heart Foundation Inc (NPI 1982680922, Boston, MA); Chmc Anesthesia Foundation Inc (NPI 1831268754, Boston, MA); The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 29, 2021
- **Other identifiers:** Medicaid 1003159336 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1003159336) · Data from the CMS NPPES public registry.