DR. COLLEEN A. AITKEN (MD) – Family Medicine Physician, NPI 1811995293
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,194 FAMILY PRACTICE in CA
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Provider Addresses for DR. COLLEEN A. AITKEN (MD)
737, West Childs Avenue, Merced, Merced County, California, 95341, United States
MERCED, CA 953416805
Phone: (209) 383-1848
Fax: (209) 383-1296
Type: Mailing
Grayson Charter School, 301, Howard Road, Westley, Stanislaus County, California, 95387, United States
WESTLEY, CA 95387
Phone: (209) 894-3141
Fax: (209) 894-3082
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-11-18
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20041118001028 | I | Family Practice | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 95341)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | CA | |
| Nephrology, Internal Medicine | CA | |
| - | CA | |
| Family Practice, Sports Medicine | CA | |
| Family Practice | CA | |
| Internal Medicine | CA | |
| Family Practice | CA | |
| Occupational Therapist In Private Practice | CA | |
| Clinical Social Worker | CA | |
| Physical Therapist In Private Practice | CA |
Reviews
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