HENRY D. DO M.D.
NPI 1538115290
Internal Medicine in Downey, CA
About Henry D. Do M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HENRY D. DO M.D. (NPI 1538115290) is an individual internal medicine provider in Downey, California, licensed in California (A77453) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Henry D. Do M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Henry Do reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Whittier, CA 90605
- Reassigned Medicare billing, California enrollment
- 27 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DOWNEY, CA 90241
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 Henry Do's NPI number?
The NPI number for Henry Do is 1538115290. It was assigned to this individual provider in the NPPES registry on May 25, 2006.
Where is Henry Do located?
Henry Do practices at 11525 Brookshire Ave Suite 301, Downey, CA 90241. The listed phone number is (562) 862-3684.
What is Henry Do's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Henry Do enrolled in Medicare?
Yes. Henry Do is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Henry Do's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Henry Do reassigns Medicare benefits to Access Primary Care Physicians, Inc. (Whittier, CA). 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 Henry Do'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 Henry Do was last updated on July 27, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Henry D. Do, M.D. · NPI 1538115290
Internal Medicine physician in Downey, California. Individual provider, active in the CMS NPPES registry since May 25, 2006.
## Identity
- **NPI:** 1538115290 (Entity type: Individual)
- **Enumerated:** May 25, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A77453 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 11525 BROOKSHIRE AVE, SUITE 301, Downey, CA 90241-4985
- **Phone:** (562) 862-3684 · **Fax:** (562) 862-7145
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Access Primary Care Physicians, Inc. (NPI 1750858510, Whittier, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 27, 2011
- **Other identifiers:** Medicare PIN WA77453A (CA); Medicaid 00A774530 (CA); Medicare UPIN I13914; and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1538115290) · Data from the CMS NPPES public registry.