DR. VIMALA DEVI THAMBI MBBS
NPI 1831893858
Internal Medicine in New York, NY
About Dr. Vimala Devi Thambi Mbbs NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. VIMALA DEVI THAMBI MBBS (NPI 1831893858) is an individual internal medicine provider in New York, New York, licensed in Oklahoma (47034) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS, is affiliated with Ascension St John Medical Center, and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses 2
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. Vimala Devi Thambi Mbbs 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 Vimala Devi Thambi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tulsa, OK 74136
- Reassigned Medicare billing, Oklahoma enrollment
- 300 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.
Ascension St John Medical Center
Acute Care Hospitals · Tulsa, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10037 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.
NEW YORK, NY 10037
NEW YORK, NY 10037
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 Vimala Devi Thambi's NPI number?
The NPI number for Vimala Devi Thambi is 1831893858. It was assigned to this individual provider in the NPPES registry on March 27, 2023.
Where is Vimala Devi Thambi located?
Vimala Devi Thambi practices at 506 Lenox Avenue, New York, NY 10037. The listed phone number is (212) 939-1406.
What is Vimala Devi Thambi's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Vimala Devi Thambi enrolled in Medicare?
Yes. Vimala Devi Thambi 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 Vimala Devi Thambi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Vimala Devi Thambi reassigns Medicare benefits to Usacs Observation Medicine Services Of Oklahoma, LLC (Tulsa, OK). 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 Vimala Devi Thambi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Vimala Devi Thambi affiliated with any hospitals?
According to CMS data, Vimala Devi Thambi is affiliated with Ascension St John Medical Center.
When was this NPI record last updated?
The NPPES record for Vimala Devi Thambi was last updated on May 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Vimala Devi Thambi, MBBS · NPI 1831893858
Internal Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 27, 2023.
## Identity
- **NPI:** 1831893858 (Entity type: Individual)
- **Enumerated:** March 27, 2023
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 47034 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 506 LENOX AVENUE, New York, NY 10037
- **Phone:** (212) 939-1406
## 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:** Usacs Observation Medicine Services Of Oklahoma, LLC (NPI 1326739111, Tulsa, OK), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** May 28, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1831893858) · Data from the CMS NPPES public registry.