Physician Profile
Unclaimed ProfileAbout ESTRIN
Based in San Francisco, CA, William Joseph Estrin, M.D. is listed in the NPI registry under neurology. William graduated from University of Chicago, Pritzker School of Medicine in 1973. According to Medicare claims data, William cared for 59 Medicare patients across 128 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
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (415) 268-0054
- Email not available
Practice Locations
490 POST ST SUITE 1152
San Francisco, CA 94102
Procedures Most Often Billed to Medicare
128 services · 59 patients · 3 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
85 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
27 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
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.
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 neurology specialists in San Francisco 8
Same specialty, same city.
Trained at University of Chicago, Pritzker School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 6 related providers in 1 group
Class of 1973 at University of Chicago, Pritzker School of Medicine 6
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Estrin specialize in?
Dr. Estrin is a neurology in San Francisco, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “NEUROLOGY”.
NPI registry
Where is Dr. Estrin located?
Dr. Estrin is listed at 490 POST ST SUITE 1152, San Francisco, CA 94102. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Estrin's phone number?
The number on file is (415) 268-0054. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Estrin's NPI number?
Dr. Estrin's National Provider Identifier is 1952482390. 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. Estrin go to medical school?
Dr. Estrin attended University of Chicago, Pritzker School of Medicine, graduating in 1973. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Estrin been practicing?
Dr. Estrin has 53 years experience. Calculated from a graduation year of 1973, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Estrin do most often?
According to Medicare billing data, Dr. Estrin 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. Estrin confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Estrin. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.