KAREN HILTUNEN MD
NPI 1700864154
Pediatrics in Groton, MA
About Karen Hiltunen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN HILTUNEN MD (NPI 1700864154) is an individual pediatrics provider in Groton, Massachusetts, licensed in Massachusetts (213917) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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)
Karen Hiltunen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Karen Hiltunen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Westford, MA 01886
- Reassigned Medicare billing, Massachusetts enrollment
- 35 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01450 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Hiltunen's NPI number?
The NPI number for Karen Hiltunen is 1700864154. It was assigned to this individual provider in the NPPES registry on January 5, 2006.
Where is Karen Hiltunen located?
Karen Hiltunen practices at 100 Boston Rd Suite F, Groton, MA 01450. The listed phone number is (978) 448-8282.
What is Karen Hiltunen's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Karen Hiltunen enrolled in Medicare?
Yes. Karen Hiltunen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Karen Hiltunen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Hiltunen reassigns Medicare benefits to Pediatrics West, PC (Westford, MA). The 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 Hiltunen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Hiltunen accept?
Health plans from Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Shield and Taro Health list Karen Hiltunen 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 Karen Hiltunen was last updated on August 14, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 Hiltunen, MD · NPI 1700864154
Pediatrics physician in Groton, Massachusetts. Individual provider, active in the CMS NPPES registry since January 5, 2006.
## Identity
- **NPI:** 1700864154 (Entity type: Individual)
- **Enumerated:** January 5, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 213917 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 BOSTON RD, SUITE F, Groton, MA 01450-1860
- **Phone:** (978) 448-8282 · **Fax:** (978) 448-6707
## 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:** Pediatrics West, PC (NPI 1598850281, Westford, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 14, 2007
- **Other identifiers:** Medicare UPIN H60648 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1700864154) · Data from the CMS NPPES public registry.