Quick answers
- Does Shireen V. Guide accept Medicare assignment?
- Yes. Medicare's clinician data says Shireen V. Guide accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Shireen V. Guide see?
- In 2024, CMS data shows 304 Original Medicare patients and 5,156 services for Shireen V. Guide. This counts Original Medicare only and measures volume, not quality.
- What is Shireen V. Guide's NPI number?
- 1033287180. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Shireen V. Guide, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 304 |
|---|---|
| Services billed to Medicare | 5,156 |
| Different services or procedures | 73 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)861 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)497 services
- Destruction of precancer skin growth, 1 growth (17000)303 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)295 services
- Biopsy of related skin growth, each additional growth (11103)235 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol72%
- High blood pressure60%
- Arthritis44%
- Ischemic heart disease20%
- Anxiety17%
- Osteoporosis17%
Practice locations
Addresses where Shireen V. Guide is enrolled with Medicare (CMS data updated October 2, 2026).
- 29829 Santa Margarita Pkwy, Suite 500Rancho Santa Margarita, CA 92688 (949) 858‑3376
- 725 Welch RdPalo Alto, CA 94304 (650) 498‑7200
Group practices
Medicare enrollment lists Shireen V. Guide as a member of this group (CMS data updated October 2, 2026).
- LPCH Medical Group Div of Lucile337 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in LPCH Medical Group Div of Lucile
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Stanford University School Of Medicine |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033287180 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians