MOLLY LAUREN LACY M.D.
NPI 1659557056
Pediatrics - Neonatal-Perinatal Medicine in Boston, MA
About Molly Lauren Lacy M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MOLLY LAUREN LACY M.D. (NPI 1659557056) is an individual neonatal-perinatal medicine provider in Boston, Massachusetts, licensed in Massachusetts (234879) and active in the NPI registry since January 2008. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
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)
Molly Lauren Lacy M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Molly Lacy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 1,358 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 Molly Lacy's NPI number?
The NPI number for Molly Lacy is 1659557056. It was assigned to this individual provider in the NPPES registry on January 15, 2008.
Where is Molly Lacy located?
Molly Lacy practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.
What is Molly Lacy's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.
Is Molly Lacy enrolled in Medicare?
Yes. Molly Lacy is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Molly Lacy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Molly Lacy reassigns Medicare benefits to Children's Hospital Pediatric Associates, Inc (Boston, 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 Molly Lacy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Molly Lacy accept?
Health plans from Taro Health list Molly Lacy 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 Molly Lacy was last updated on August 25, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Molly Lauren Lacy, M.D. · NPI 1659557056
Neonatal-Perinatal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since January 15, 2008.
## Identity
- **NPI:** 1659557056 (Entity type: Individual)
- **Enumerated:** January 15, 2008
- **Primary specialty:** Pediatrics - Neonatal-Perinatal Medicine · taxonomy 2080N0001X
- **State license:** 234879 (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:** Children's Hospital Pediatric Associates, Inc (NPI 1457306664, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 25, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1659557056) · Data from the CMS NPPES public registry.