Physician Profile
Unclaimed ProfileAbout JOHNSON
Mark William Johnson, MD practises diagnostic radiology in Cambridge, MA. Mark is a 2018 graduate of University of Minnesota Medical School. Mark is also listed as specialising in internal medicine.
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 does Dr. Johnson specialise in?
Dr. Johnson is a diagnostic radiology in Cambridge, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
Where is Dr. Johnson located?
Dr. Johnson is listed at 330 MOUNT AUBURN ST, Cambridge, MA 02138. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Johnson's phone number?
The number on file is (617) 492-3500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Johnson?
Dr. Johnson's National Provider Identifier is 1316436793. 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
Where did Dr. Johnson go to medical school?
Dr. Johnson attended University of Minnesota Medical School, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Johnson have?
Dr. Johnson has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Johnson do most often?
According to Medicare billing data, Dr. Johnson performs imaging including x-ray of chest, 1 view and screening mammography. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Johnson's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Johnson. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (617) 492-3500
- Email not available
Practice Locations
330 MOUNT AUBURN ST
Cambridge, MA 02138
Procedures Most Often Billed to Medicare
347 services · 343 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
99 |
| Screening mammography | Imaging | 77067 |
64 |
| Screening 3d breast mammography | Imaging | 77063 |
64 |
| X-ray of chest, 2 views | Imaging | 71046 |
56 |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
22 |
| Ct scan of chest with contrast | Imaging | 71260 |
17 |
| X-ray of abdomen, 1 view | Imaging | 74018 |
14 |
| X-ray of abdomen, 2 views | Imaging | 74019 |
11 |
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 3
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 — 29 related providers in 4 groups
Other diagnostic radiology specialists in Cambridge 5
Same specialty, same city.
Trained at University of Minnesota Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 2018 at University of Minnesota Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 8
Providers in MA 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.