CARLOS ALEJANDRO PORTALES CASTILLO MD
NPI 1669081378
Internal Medicine - Infectious Disease in Rochester, NY
About Carlos Alejandro Portales Castillo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CARLOS ALEJANDRO PORTALES CASTILLO MD (NPI 1669081378) is an individual infectious disease provider in Rochester, New York, licensed in Missouri (2024041913) and active in the NPI registry since July 2020. He is enrolled in Medicare PECOS, is affiliated with Ssm Health St Mary's Hospital Jefferson City, and is a graduate of Other (2019).
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
Carlos Alejandro Portales Castillo 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 Carlos Portales Castillo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mount Vernon, IL 62864
- Reassigned Medicare billing, Illinois enrollment
- 296 clinicians in this Medicare group
Saint Louis, MO 63104
- Reassigned Medicare billing, Missouri enrollment
- 1,294 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.
Ssm Health St Mary's Hospital Jefferson City
Acute Care Hospitals · Jefferson City, MOSsm Health Saint Louis University Hospital
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14621 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.
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 Carlos Portales Castillo's NPI number?
The NPI number for Carlos Portales Castillo is 1669081378. It was assigned to this individual provider in the NPPES registry on July 28, 2020.
Where is Carlos Portales Castillo located?
Carlos Portales Castillo practices at 1425 Portland Ave, Rochester, NY 14621. The listed phone number is (585) 922-4000.
What is Carlos Portales Castillo's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Carlos Portales Castillo enrolled in Medicare?
Yes. Carlos Portales Castillo 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 Carlos Portales Castillo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carlos Portales Castillo reassigns Medicare benefits to 2 organizations: Physician Services Corporation Of Southern Illinois Inc. (Mount Vernon, IL) and Ssm Health Care Group (Saint Louis, MO). 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 Carlos Portales Castillo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Carlos Portales Castillo accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Carlos Portales Castillo 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 Carlos Portales Castillo affiliated with any hospitals?
According to CMS data, Carlos Portales Castillo is affiliated with Ssm Health St Mary's Hospital Jefferson City and Ssm Health Saint Louis University Hospital.
When was this NPI record last updated?
The NPPES record for Carlos Portales Castillo was last updated on May 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Carlos Alejandro Portales Castillo, MD · NPI 1669081378
Infectious Disease physician in Rochester, New York. Individual provider, active in the CMS NPPES registry since July 28, 2020.
## Identity
- **NPI:** 1669081378 (Entity type: Individual)
- **Enumerated:** July 28, 2020
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** 2024041913 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1425 PORTLAND AVE, Rochester, NY 14621-3011
- **Phone:** (585) 922-4000
## 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): Physician Services Corporation Of Southern Illinois Inc. (NPI 1831101807, Mount Vernon, IL); Ssm Health Care Group (NPI 1306589544, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** May 29, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1669081378) · Data from the CMS NPPES public registry.