Physician Profile
Unclaimed ProfileAbout STEIN
Based in Santa Ana, CA, Mark Geoffery Stein, M.D. is listed in the NPI registry under diagnostic radiology. Mark is also listed as specialising in radiology and diagnostic ultrasound.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Stein's specialty?
Dr. Stein is a diagnostic radiology in Santa Ana, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
Where can I find Dr. Stein?
Dr. Stein is listed at 1100 N TUSTIN AVE BLDG. A, Santa Ana, CA 92705. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Stein?
The number on file is (714) 835-6055. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Stein's NPI number?
Dr. Stein's National Provider Identifier is 1265478564. 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
What is Dr. Stein's medical education?
Dr. Stein attended Other, graduating in 1978. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Stein been practising?
Dr. Stein has 48 years experience. Calculated from a graduation year of 1978, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Stein known for?
According to Medicare billing data, Dr. Stein performs imaging including ct scan of chest without contrast and nuclear medicine study from skull base to mid-thigh with ct scan. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Stein confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Stein. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (714) 835-6055
- Email not available
Practice Locations
1100 N TUSTIN AVE BLDG. A
Santa Ana, CA 92705
Procedures Most Often Billed to Medicare
5,847 services · 638 patients · 14 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Ct scan of chest without contrast | Imaging | 71250 |
138 |
| Nuclear medicine study from skull base to mid-thigh with ct scan | Imaging | 78815 |
71 |
| Ct scan of chest without contrast | Imaging | 71250 |
60 |
| X-ray of chest, 1 view | Imaging | 71045 |
49 |
| Ct scan of chest with contrast | Imaging | 71260 |
44 |
| Ct scan of chest with contrast | Imaging | 71260 |
43 |
| X-ray of chest, 2 views | Imaging | 71046 |
32 |
| Ct scan of heart with evaluation of blood vessel calcium | Imaging | 75571 |
27 |
| Mri scan of leg joint without contrast | Imaging | 73721 |
19 |
| Mri scan of lower spinal canal without contrast | Imaging | 72148 |
18 |
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 diagnostic radiology specialists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 28 related providers in 4 groups
Other diagnostic radiology specialists in Santa Ana 4
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1978 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Ct scan of chest without contrast 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.