Physician Profile
Unclaimed ProfileAbout SIMMONS
Based in San Francisco, CA, William F Simmons, MD is listed in the NPI registry under infectious disease. William graduated from Columbia University College of Physicians and Surgeons in 2018.
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. Simmons specialise in?
Dr. Simmons 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 is Dr. Simmons located?
Dr. Simmons is listed at 400 PARNASSUS AVE # 336, San Francisco, CA 94143. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Simmons's phone number?
The number on file is (415) 353-2626. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Simmons?
Dr. Simmons's National Provider Identifier is 1326537721. 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. Simmons go to medical school?
Dr. Simmons attended Columbia University College of Physicians and Surgeons, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Simmons have?
Dr. Simmons has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Simmons do most often?
According to Medicare billing data, Dr. Simmons 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
Is Dr. Simmons's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Simmons. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (415) 353-2626
- Email not available
Practice Locations
400 PARNASSUS AVE # 336
San Francisco, CA 94143
Procedures Most Often Billed to Medicare
369 services · 254 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
94 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
83 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
46 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
44 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
31 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
29 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
26 |
| Telephone, internet, or electronic health record assessment and management with written report by consulting physician, at least 5 minutes | Office visit | 99451 |
16 |
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 infectious diseases at this location 1
Same specialty, same street address — most likely the same department or group.
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 7
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Columbia University College of Physicians and Surgeons 8
Other providers in the same specialty who trained at the same institution.
Class of 2018 at Columbia University College of Physicians and Surgeons 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.