DR. COLLEEN A. AITKEN MD
NPI 1811995293
Family Medicine in Westley, CA
About Dr. Colleen A. Aitken Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. COLLEEN A. AITKEN MD (NPI 1811995293) is an individual family medicine provider in Westley, California, licensed in California (A68298) and active in the NPI registry since July 2005. She is enrolled in Medicare PECOS and is a graduate of Icahn School Of Medicine At Mount Sinai (1997).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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. Colleen A. Aitken 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 Colleen Aitken reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Westley, CA 95387
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Golden Valley Health Centers
- 440 clinicians in this Medicare group
Modesto, CA 95355
- Reassigned Medicare billing, California enrollment
- 25 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
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 95387 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WESTLEY, CA 95387
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 Colleen Aitken's NPI number?
The NPI number for Colleen Aitken is 1811995293. It was assigned to this individual provider in the NPPES registry on July 11, 2005.
Where is Colleen Aitken located?
Colleen Aitken practices at 301 Howard Rd, Westley, CA 95387. The listed phone number is (209) 894-3141.
What is Colleen Aitken's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Colleen Aitken enrolled in Medicare?
Yes. Colleen Aitken 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 Colleen Aitken's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Colleen Aitken reassigns Medicare benefits to 2 organizations: Golden Valley Health Center (Westley, CA) and Family First Medical Care A Professional Corporation (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 Colleen Aitken'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 Colleen Aitken was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Colleen A. Aitken, MD · NPI 1811995293
Family Medicine physician in Westley, California. Individual provider, active in the CMS NPPES registry since July 11, 2005.
## Identity
- **NPI:** 1811995293 (Entity type: Individual)
- **Enumerated:** July 11, 2005
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** A68298 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 301 HOWARD RD, Westley, CA 95387
- **Phone:** (209) 894-3141 · **Fax:** (209) 894-3082
## 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): Golden Valley Health Center (NPI 1770568347, Westley, CA); Family First Medical Care A Professional Corporation (NPI 1689066029, Modesto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 1997
## Record status
- **NPPES last updated:** March 7, 2023
- **Other identifiers:** Other 00A682980 (CA); Other 102109 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1811995293) · Data from the CMS NPPES public registry.