DR. CARLOS F VIEJO M, D.
NPI 1073528659
Anesthesiology in New York, NY
About Dr. Carlos F Viejo M, D. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CARLOS F VIEJO M, D. (NPI 1073528659) is an individual anesthesiology provider in New York, New York, licensed in New York (191411) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Lenox Hill Hospital, and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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. Carlos F Viejo M, D. 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 Viejo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10075
- Reassigned Medicare billing, New York enrollment
- 530 clinicians in this Medicare group
Chappaqua, NY 10514
- Reassigned Medicare billing, New York enrollment
- 1,406 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
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lenox Hill Hospital
Acute Care Hospitals · New York, NYOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10037
NEW YORK, NY 10037
NEW YORK, NY 10037
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 Viejo's NPI number?
The NPI number for Carlos Viejo is 1073528659. It was assigned to this individual provider in the NPPES registry on July 30, 2006.
Where is Carlos Viejo located?
Carlos Viejo practices at 506 Malcolm X Blvd W P 522, New York, NY 10037. The listed phone number is (212) 939-2740.
What is Carlos Viejo's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Carlos Viejo enrolled in Medicare?
Yes. Carlos Viejo 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 Viejo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carlos Viejo reassigns Medicare benefits to 2 organizations: Physicians Of University Hospital, PC (New York, NY) and North Shore - Lij Anesthesiology, PC (Chappaqua, NY). 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 Viejo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Carlos Viejo affiliated with any hospitals?
According to CMS data, Carlos Viejo is affiliated with Lenox Hill Hospital.
When was this NPI record last updated?
The NPPES record for Carlos Viejo was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. Carlos F Viejo, M, D. · NPI 1073528659
Anesthesiology physician in New York, New York. Individual provider, active in the CMS NPPES registry since July 30, 2006.
## Identity
- **NPI:** 1073528659 (Entity type: Individual)
- **Enumerated:** July 30, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 191411 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 506 MALCOLM X BLVD, W P 522, New York, NY 10037-1802
- **Phone:** (212) 939-2740 · **Fax:** (212) 939-2759
## 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): Physicians Of University Hospital, PC (NPI 1992200075, New York, NY); North Shore - Lij Anesthesiology, PC (NPI 1417401266, Chappaqua, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare ID-Type Unspecified 7L8501 (NY); Medicare UPIN H46056 (NY); Medicaid 01714369 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1073528659) · Data from the CMS NPPES public registry.