DR. SHANGIDA AHSAN MD
NPI 1639638463
Internal Medicine in Downey, CA
About Dr. Shangida Ahsan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SHANGIDA AHSAN MD (NPI 1639638463) is an individual internal medicine provider in Downey, California, licensed in California (A178016) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 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. Shangida Ahsan 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 Shangida Ahsan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90015
- Reassigned Medicare billing, California enrollment
- 2,052 clinicians in this Medicare group
Modesto, CA 95350
- Reassigned Medicare billing, California enrollment
- 176 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90241 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DOWNEY, CA 90241
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 Shangida Ahsan's NPI number?
The NPI number for Shangida Ahsan is 1639638463. It was assigned to this individual provider in the NPPES registry on March 19, 2019.
Where is Shangida Ahsan located?
Shangida Ahsan practices at 10441 Lakewood Blvd, Downey, CA 90241. The listed phone number is (562) 869-1089.
What is Shangida Ahsan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Shangida Ahsan enrolled in Medicare?
Yes. Shangida Ahsan 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 Shangida Ahsan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shangida Ahsan reassigns Medicare benefits to 2 organizations: Healthcare Partners Affiliates Medical Group (Los Angeles, CA) and Hospitalists Of Modesto Medical Group Inc (Modesto, CA). 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 Shangida Ahsan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Shangida Ahsan was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Shangida Ahsan, MD · NPI 1639638463
Internal Medicine physician in Downey, California. Individual provider, active in the CMS NPPES registry since March 19, 2019.
## Identity
- **NPI:** 1639638463 (Entity type: Individual)
- **Enumerated:** March 19, 2019
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A178016 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 10441 LAKEWOOD BLVD, Downey, CA 90241-2870
- **Phone:** (562) 869-1089
## 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): Healthcare Partners Affiliates Medical Group (NPI 1659312593, Los Angeles, CA); Hospitalists Of Modesto Medical Group Inc (NPI 1821190711, Modesto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** November 12, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1639638463) · Data from the CMS NPPES public registry.