ALAN CHAUSOW MD
NPI 1801983457
Internal Medicine - Pulmonary Disease in Mountain View, CA
About Alan Chausow Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALAN CHAUSOW MD (NPI 1801983457) is an individual pulmonary disease provider in Mountain View, California, licensed in California (G52077) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Washington University School Of Medicine (1976).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Alan Chausow 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 Alan Chausow reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mountain View, CA 94040
- Reassigned Medicare billing, California enrollment
- 57 clinicians in this Medicare group
Palo Alto, CA 94301
- Reassigned Medicare billing, California enrollment
- 4,479 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 94040 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.
MOUNTAIN VIEW, CA 94040
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 Alan Chausow's NPI number?
The NPI number for Alan Chausow is 1801983457. It was assigned to this individual provider in the NPPES registry on October 6, 2006.
Where is Alan Chausow located?
Alan Chausow practices at 701 E El Camino Real, Mountain View, CA 94040. The listed phone number is (650) 934-7144.
What is Alan Chausow's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Alan Chausow enrolled in Medicare?
Yes. Alan Chausow 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 Alan Chausow's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alan Chausow reassigns Medicare benefits to 2 organizations: Physician Services At El Camino Hospital (Mountain View, CA) and Sutter Bay Medical Foundation (Palo Alto, 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 Alan Chausow'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 Alan Chausow was last updated on November 30, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Alan Chausow, MD · NPI 1801983457
Pulmonary Disease physician in Mountain View, California. Individual provider, active in the CMS NPPES registry since October 6, 2006.
## Identity
- **NPI:** 1801983457 (Entity type: Individual)
- **Enumerated:** October 6, 2006
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** G52077 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 701 E EL CAMINO REAL, Mountain View, CA 94040-2833
- **Phone:** (650) 934-7144
## 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): Physician Services At El Camino Hospital (NPI 1669575585, Mountain View, CA); Sutter Bay Medical Foundation (NPI 1013950807, Palo Alto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Washington University School Of Medicine, class of 1976
## Record status
- **NPPES last updated:** November 30, 2011
- **Other identifiers:** Medicare UPIN A52157 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1801983457) · Data from the CMS NPPES public registry.