DR. LYDIA C SIEGEL MD, MPH
NPI 1003892001
Internal Medicine in Jamaica Plain, MA
About Dr. Lydia C Siegel Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LYDIA C SIEGEL MD, MPH (NPI 1003892001) is an individual internal medicine provider in Jamaica Plain, Massachusetts, licensed in Massachusetts (226444) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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. Lydia C Siegel Md, Mph 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 Reassignment
Medicare enrollment records show Lydia Siegel 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
- 220 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 2
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.
Brigham And Women's Hospital
Acute Care Hospitals · Boston, MAFaulkner Hospital-Brigham And Women's
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02130 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Lydia Siegel's NPI number?
The NPI number for Lydia Siegel is 1003892001. It was assigned to this individual provider in the NPPES registry on December 21, 2005.
Where is Lydia Siegel located?
Lydia Siegel practices at 301 South Huntington Avenue, Jamaica Plain, MA 02130. The listed phone number is (857) 307-3300.
What is Lydia Siegel's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Lydia Siegel enrolled in Medicare?
Yes. Lydia Siegel 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 organization bills Medicare for Lydia Siegel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lydia Siegel reassigns Medicare benefits to Brigham & Womens Hospital, 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 Lydia Siegel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lydia Siegel accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Lydia Siegel 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 Lydia Siegel affiliated with any hospitals?
According to CMS data, Lydia Siegel is affiliated with Brigham And Women's Hospital and Faulkner Hospital-Brigham And Women's.
When was this NPI record last updated?
The NPPES record for Lydia Siegel was last updated on July 12, 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. Lydia C Siegel, MD, MPH · NPI 1003892001
Internal Medicine physician in Jamaica Plain, Massachusetts. Individual provider, active in the CMS NPPES registry since December 21, 2005.
## Identity
- **NPI:** 1003892001 (Entity type: Individual)
- **Enumerated:** December 21, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 226444 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 301 SOUTH HUNTINGTON AVENUE, Jamaica Plain, MA 02130
- **Phone:** (857) 307-3300 · **Fax:** (857) 307-3305
## 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:** Brigham & Womens Hospital, Inc. (NPI 1790717650, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** July 12, 2012
- **Other identifiers:** Medicare UPIN I65503; Medicaid 2119064 (MA); Medicare PIN 0X2104
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Source: [NPI Profile](https://npiprofile.com/npi/1003892001) · Data from the CMS NPPES public registry.