DR. NATHALIA ARIAS ALZATE MD
NPI 1023699055
Family Medicine in Chelsea, MA
About Dr. Nathalia Arias Alzate Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NATHALIA ARIAS ALZATE MD (NPI 1023699055) is an individual family medicine provider in Chelsea, Massachusetts, licensed in Massachusetts (10220822) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Medical Center, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses
Other Names 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 and accepts Medicare assignment
Dr. Nathalia Arias Alzate 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 Reassignments
2Medicare enrollment records show Nathalia Arias Alzate reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Needham, MA 02494
- Reassigned Medicare billing, Massachusetts enrollment
- 356 clinicians in this Medicare group
Freehold, NJ 07728
- Reassigned Medicare billing, New Jersey enrollment
- 95 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Beth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MAWinchester Hospital
Acute Care Hospitals · Winchester, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02150 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHELSEA, MA 02150
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 Nathalia Arias Alzate's NPI number?
The NPI number for Nathalia Arias Alzate is 1023699055. It was assigned to this individual provider in the NPPES registry on April 20, 2021. The provider is also known as Nathalia Arias-Alzate MD.
Where is Nathalia Arias Alzate located?
Nathalia Arias Alzate practices at 1000 Broadway, Chelsea, MA 02150. The listed phone number is (617) 975-6200.
What is Nathalia Arias Alzate's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Nathalia Arias Alzate enrolled in Medicare?
Yes. Nathalia Arias Alzate 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 organizations bill Medicare for Nathalia Arias Alzate's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nathalia Arias Alzate reassigns Medicare benefits to 2 organizations: Medical Care Of Boston Management Corporation (Needham, MA) and Hackensack Meridian Urgent Care, PC (Freehold, NJ). 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 Nathalia Arias Alzate's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nathalia Arias Alzate accept?
Health plans from Anthem Blue Cross and Blue Shield list Nathalia Arias Alzate 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 Nathalia Arias Alzate affiliated with any hospitals?
According to CMS data, Nathalia Arias Alzate is affiliated with Beth Israel Deaconess Medical Center and Winchester Hospital.
When was this NPI record last updated?
The NPPES record for Nathalia Arias Alzate was last updated on July 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Nathalia Arias Alzate, MD · NPI 1023699055
Family Medicine physician in Chelsea, Massachusetts. Individual provider, active in the CMS NPPES registry since April 20, 2021.
## Identity
- **NPI:** 1023699055 (Entity type: Individual)
- **Enumerated:** April 20, 2021
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 10220822 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 BROADWAY, Chelsea, MA 02150-2247
- **Phone:** (617) 975-6200
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Medical Care Of Boston Management Corporation (NPI 1437196359, Needham, MA); Hackensack Meridian Urgent Care, PC (NPI 1285165209, Freehold, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** July 3, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1023699055) · Data from the CMS NPPES public registry.