DR. AMBOOJ TIWARI MD
NPI 1609198779
Psychiatry & Neurology - Vascular Neurology in Mission Hills, CA
About Dr. Ambooj Tiwari Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AMBOOJ TIWARI MD (NPI 1609198779) is an individual vascular neurology provider in Mission Hills, California, licensed in New York (276012-1) and active in the NPI registry since February 2010. He is enrolled in Medicare PECOS, is affiliated with Jamaica Hospital Medical Center, and maintains a secondary practice location in Greenvale.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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. Ambooj Tiwari 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
4Medicare enrollment records show Ambooj Tiwari reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Jose, CA 95113
- Reassigned Medicare billing, California enrollment
- 4 clinicians in this Medicare group
Brooklyn, NY 11235
- Reassigned Medicare billing, New York enrollment
- 638 clinicians in this Medicare group
New York, NY 10037
- Reassigned Medicare billing, New York enrollment
- 2,094 clinicians in this Medicare group
East Hills, NY 11548
- Reassigned Medicare billing, New Jersey and New York enrollments
- 13 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 3
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Jamaica Hospital Medical Center
Acute Care Hospitals · Jamaica, NYSouth Brooklyn Health
Acute Care Hospitals · Brooklyn, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91345 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.
MISSION HILLS, CA 91345
MISSION HILLS, CA 91345
MISSION HILLS, CA 91345
MISSION HILLS, CA 91345
MISSION HILLS, CA 91345
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 Ambooj Tiwari's NPI number?
The NPI number for Ambooj Tiwari is 1609198779. It was assigned to this individual provider in the NPPES registry on February 17, 2010.
Where is Ambooj Tiwari located?
Ambooj Tiwari practices at 15031 Rinaldi St, Mission Hills, CA 91345. The listed phone number is (818) 365-8051.
What is Ambooj Tiwari's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Vascular Neurology, with taxonomy code 2084V0102X.
Is Ambooj Tiwari enrolled in Medicare?
Yes. Ambooj Tiwari 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 Ambooj Tiwari's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ambooj Tiwari reassigns Medicare benefits to 4 organizations: Neuranimus P C (San Jose, CA), Coney Island Medical Practice Plan, P.C. (Brooklyn, NY), Physician Affiliate Group Of New York PC (New York, NY) and Jeffrey Farkas MD LLC (East Hills, 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 Ambooj Tiwari's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ambooj Tiwari affiliated with any hospitals?
According to CMS data, Ambooj Tiwari is affiliated with Jamaica Hospital Medical Center and South Brooklyn Health.
When was this NPI record last updated?
The NPPES record for Ambooj Tiwari was last updated on August 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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. Ambooj Tiwari, MD · NPI 1609198779
Vascular Neurology physician in Mission Hills, California. Individual provider, active in the CMS NPPES registry since February 17, 2010.
## Identity
- **NPI:** 1609198779 (Entity type: Individual)
- **Enumerated:** February 17, 2010
- **Primary specialty:** Psychiatry & Neurology - Vascular Neurology · taxonomy 2084V0102X
- **State license:** 276012-1 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 15031 RINALDI ST, Mission Hills, CA 91345-1207
- **Phone:** (818) 365-8051 · **Fax:** (818) 897-4701
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Neuranimus P C (NPI 1235863184, San Jose, CA); Coney Island Medical Practice Plan, P.C. (NPI 1386951762, Brooklyn, NY); Physician Affiliate Group Of New York PC (NPI 1013375526, New York, NY); Jeffrey Farkas MD LLC (NPI 1114267929, East Hills, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** August 8, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1609198779) · Data from the CMS NPPES public registry.