Physician Profile
Unclaimed ProfileAbout JOHNSON
Malcolm C Johnson, MD practises emergency medicine in Walnut Creek, CA. Malcolm is a 2000 graduate of University of Wisconsin School of Medicine. Malcolm is also listed as specialising in emergency medical services.
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 an emergency medicine in Walnut Creek, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
Where is Dr. Johnson located?
Dr. Johnson is listed at 1601 YGNACIO VALLEY RD, Walnut Creek, CA 94598. 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 (925) 939-3000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Johnson's NPI number?
Dr. Johnson's National Provider Identifier is 1003830316. 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 Wisconsin School of Medicine, graduating in 2000. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Johnson been practising?
Dr. Johnson has 26 years experience. Calculated from a graduation year of 2000, 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 procedures including removal of skin and tissue, 20.0 sq cm or less and removal of skin and tissue, each additional 20.0 sq cm or less; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only and ultrasound study of arm and leg arteries, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Johnson confirmed this information?
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
- (925) 939-3000
- Email not available
Practice Locations
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
Procedures Most Often Billed to Medicare
789 services · 634 patients · 9 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of skin and tissue, 20.0 sq cm or less | Procedure | 11042 |
109 |
| Removal of skin and tissue, each additional 20.0 sq cm or less | Procedure | 11045 |
69 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
33 |
| Ultrasound study of arm and leg arteries | Treatment | 93922 |
11 |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
276 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
90 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
80 |
| Critical care, first 30-74 minutes | Office visit | 99291 |
72 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
49 |
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 emergency medicines at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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 — 30 related providers in 4 groups
Other emergency medicines in Walnut Creek 6
Same specialty, same city.
Trained at University of Wisconsin School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2000 at University of Wisconsin School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of skin and tissue, 20.0 sq cm or less 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.