Physician Profile
Unclaimed ProfileAbout JOHN
Based in San Francisco, CA, Malcolm D John, MD is listed in the NPI registry under infectious disease. Malcolm graduated from Harvard Medical School in 1994. Malcolm 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 is Dr. John's specialty?
Dr. John is an infectious disease in San Francisco, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INFECTIOUS DISEASE”.
NPI registry
Where can I find Dr. John?
Dr. John is listed at 400 PARNASSUS AVE, San Francisco, CA 94143. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. John?
The number on file is (415) 353-2119. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. John's NPI number?
Dr. John's National Provider Identifier is 1003872870. 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. John's medical education?
Dr. John attended Harvard Medical School, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. John been practising?
Dr. John has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What is Dr. John known for?
According to Medicare billing data, Dr. John the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. John confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. John. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (415) 353-2119
- Email not available
Practice Locations
400 PARNASSUS AVE
San Francisco, CA 94143
Procedures Most Often Billed to Medicare
151 services · 97 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
71 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
29 |
| Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | Billing code | G2212 |
22 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
16 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
13 |
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.
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.
Other infectious diseases in San Francisco 8
Same specialty, same city.
Trained at Harvard Medical School 7
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1994 at Harvard Medical School 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.