Dr. Peter Hamilton Stein, M.D.
Dr. Peter Hamilton Stein is a Rheumatology Physician provider (Internal Medicine) practicing in Greenbrae, CA, registered in the NPPES registry with NPI 1730295643 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1730295643 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Peter Hamilton Stein |
| Credential | M.D. |
| Sex | Male |
| Practice address | Greenbrae, CA, 94904 |
| Phone | 4154649604 |
| Fax | 4154640171 |
| Enumeration date | 2006-08-22 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207RR0500X | Rheumatology Physician | Primary | A48620 | CA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Peter Stein, M.D. NPI: 1730295643 Taxonomy: 207RR0500X (Rheumatology Physician) Address: Greenbrae, CA, 94904
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1740289149 | Nancy Trahms | Individual | Psychiatry Physician | Greenbrae, CA |
| 1972582377 | David Rowe | Individual | Pediatrics Physician | Greenbrae, CA |
| 1598701211 | Robert Ferretti | Individual | Orthopaedic Surgery Physician | Greenbrae, CA |
| 1255447330 | James Gardner | Individual | General Practice Physician | Greenbrae, CA |
| 1699870741 | Michael Foster | Individual | General Practice Dentistry | Greenbrae, CA |
| 1235230525 | Elizabeth Smith | Individual | Rheumatology Physician | Greenbrae, CA |
| 1861574428 | Robert S. Ferretti | Organization | Orthopaedic Surgery Physician | Greenbrae, CA |
| 1558437285 | Richard Printz | Individual | Obstetrics & Gynecology Physician | Greenbrae, CA |
Verify this record
Cross-check NPI 1730295643 against the authoritative CMS record: view Dr. Peter Hamilton Stein on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.