Physician Profile
Unclaimed ProfileAbout CHAFEN
Less T Chafen, M.D. is a healthcare provider in Walnut Creek, CA specializing in diagnostic radiology. Medicare claims data shows Less provided 1,421 services to 1,418 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (925) 296-7150
- Email not available
Practice Locations
2125 OAK GROVE RD #200
Walnut Creek, CA 94598
Procedures Most Often Billed to Medicare
1,421 services · 1,418 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Biopsy of breast and placement of locating device using ultrasound, first growth | Procedure | 19083 |
11 |
| Screening mammography | Imaging | 77067 |
270 |
| Dxa bone density measurement of hip, pelvis, spine | Imaging | 77080 |
262 |
| Screening 3d breast mammography | Imaging | 77063 |
250 |
| Screening mammography | Imaging | 77067 |
217 |
| Screening 3d breast mammography | Imaging | 77063 |
133 |
| Limited ultrasound scan of 1 breast | Imaging | 76642 |
66 |
| Diagnostic mammography of both breasts | Imaging | 77066 |
61 |
| Diagnostic mammography of 1 breast | Imaging | 77065 |
58 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | Billing code | G0279 |
93 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other radiologists at this location 8
Same specialty, same street address — most likely the same department or group.
Other radiologists in Walnut Creek 4
Same specialty, same city.
Also performs Biopsy of breast and placement of locating device using ultrasound, first growth 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Chafen?
Dr. Chafen is a radiologist in Walnut Creek, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Diagnostic Radiology”.
NPI registry
What is Dr. Chafen's address?
Dr. Chafen is listed at 2125 OAK GROVE RD #200, Walnut Creek, CA 94598. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Chafen?
The number on file is (925) 296-7150. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Chafen?
Dr. Chafen's National Provider Identifier is 1336131689. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Dr. Chafen have?
Dr. Chafen has 21+ years experience. Registered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What procedures does Dr. Chafen perform?
According to Medicare billing data, Dr. Chafen performs procedures including biopsy of breast and placement of locating device using ultrasound, first growth; reads or performs imaging such as screening mammography and dxa bone density measurement of hip, pelvis, spine. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Chafen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chafen. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.