DR. SAMUEL JOSEPH MCMILLEN MD
NPI 1578199436
Student in an Organized Health Care Education/Training Program in Cambridge, MA
About Dr. Samuel Joseph Mcmillen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SAMUEL JOSEPH MCMILLEN MD (NPI 1578199436) is an individual student in an organized health care education/training program in Cambridge, Massachusetts and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, is affiliated with Cambridge Health Alliance, and is a graduate of Other (2016).
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 and accepts Medicare assignment
Dr. Samuel Joseph Mcmillen Md 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 Samuel Mcmillen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Cambridge, MA 02139
- Reassigned Medicare billing, Massachusetts enrollment
- 362 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cambridge Health Alliance
Acute Care Hospitals · Cambridge, MAOther Providers at the Same Location NPPES 20
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 Samuel Mcmillen's NPI number?
The NPI number for Samuel Mcmillen is 1578199436. It was assigned to this individual provider in the NPPES registry on March 22, 2020.
Where is Samuel Mcmillen located?
Samuel Mcmillen practices at 1493 Cambridge St, Cambridge, MA 02139. The listed phone number is (617) 665-1000.
What is Samuel Mcmillen's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Samuel Mcmillen enrolled in Medicare?
Yes. Samuel Mcmillen 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 Samuel Mcmillen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Samuel Mcmillen reassigns Medicare benefits to Cambridge Public Health Commission (Cambridge, 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 Samuel Mcmillen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Samuel Mcmillen accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Samuel Mcmillen 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 Samuel Mcmillen affiliated with any hospitals?
According to CMS data, Samuel Mcmillen is affiliated with Cambridge Health Alliance.
When was this NPI record last updated?
The NPPES record for Samuel Mcmillen was last updated on February 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Dr. Samuel Joseph Mcmillen, MD · NPI 1578199436
Student in an Organized Health Care Education/Training Program provider in Cambridge, Massachusetts. Individual provider, active in the CMS NPPES registry since March 22, 2020.
## Identity
- **NPI:** 1578199436 (Entity type: Individual)
- **Enumerated:** March 22, 2020
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** No
## Practice location
- **Address:** 1493 CAMBRIDGE ST, Cambridge, MA 02139-1047
- **Phone:** (617) 665-1000
## 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:** Cambridge Public Health Commission (NPI 1306908405, Cambridge, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** February 25, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1578199436) · Data from the CMS NPPES public registry.