DR. ALFREDO CASTELLANOS M.D.
NPI 1700088770
Internal Medicine - Critical Care Medicine in Whittier, CA
About Dr. Alfredo Castellanos M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALFREDO CASTELLANOS M.D. (NPI 1700088770) is an individual critical care medicine provider in Whittier, California, licensed in California (A95095) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS and is a graduate of Temple University School Of Medicine (2004).
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. Alfredo Castellanos 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
3Medicare enrollment records show Alfredo Castellanos reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Whittier, CA 90602
- Reassigned Medicare billing, California enrollment
- 840 clinicians in this Medicare group
Whittier, CA 90602
- Reassigned Medicare billing, California enrollment
- 18 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 1,437 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90602 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 4
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
WHITTIER, CA 90602
WHITTIER, CA 90602
WHITTIER, CA 90602
WHITTIER, CA 90602
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 Alfredo Castellanos's NPI number?
The NPI number for Alfredo Castellanos is 1700088770. It was assigned to this individual provider in the NPPES registry on June 1, 2007.
Where is Alfredo Castellanos located?
Alfredo Castellanos practices at 12462 Putnam St Suite 208, Whittier, CA 90602. The listed phone number is (562) 789-5470.
What is Alfredo Castellanos's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Alfredo Castellanos enrolled in Medicare?
Yes. Alfredo Castellanos 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 Alfredo Castellanos's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alfredo Castellanos reassigns Medicare benefits to 3 organizations: Pih Health Physicians (Whittier, CA), Whittier Pulmonary And Critical Care Medical Group, Inc. (Whittier, CA) and Emergency And Acute Care Medical Corporation (San Diego, 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 Alfredo Castellanos'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 Alfredo Castellanos was last updated on July 13, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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. Alfredo Castellanos, M.D. · NPI 1700088770
Critical Care Medicine physician in Whittier, California. Individual provider, active in the CMS NPPES registry since June 1, 2007.
## Identity
- **NPI:** 1700088770 (Entity type: Individual)
- **Enumerated:** June 1, 2007
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** A95095 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 12462 PUTNAM ST, SUITE 208, Whittier, CA 90602-1048
- **Phone:** (562) 789-5470 · **Fax:** (562) 789-4480
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Pih Health Physicians (NPI 1821224247, Whittier, CA); Whittier Pulmonary And Critical Care Medical Group, Inc. (NPI 1255538773, Whittier, CA); Emergency And Acute Care Medical Corporation (NPI 1437103942, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Temple University School Of Medicine, class of 2004
## Record status
- **NPPES last updated:** July 13, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1700088770) · Data from the CMS NPPES public registry.