Giselle Lopez, MD, PHD
NPI 1821415290 · Student in an Organized Health Care Education/Training Program · San Francisco, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Giselle Lopez, MD, PHD is a Student in an Organized Health Care Education/Training Program provider in San Francisco, CA (NPI 1821415290).
Provider details
- NPI number
- 1821415290
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD, PHD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
226 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 141 | $25 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 26 | $64 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 25 | $29 |
| Pathology Examination of Specimen During Surgery, First Tissue Block88331 | 21 | $55 |
| Surgical Pathology Consultation and Report on Referred Slides Prepared Elsewhere88321 | 13 | $77 |
Typical Medicare-allowed amounts for these services range $25–$77 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$8,281 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-03-24
- Last updated
- 2014-03-24
Frequently asked questions
- What is Giselle Lopez's NPI number?
- Giselle Lopez's National Provider Identifier (NPI) is 1821415290, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Giselle Lopez's specialty?
- Giselle Lopez is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Giselle Lopez located?
- Giselle Lopez's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is Giselle Lopez's phone number?
- The practice phone number listed in the NPPES registry for Giselle Lopez is (301) 751-7444.
- Does Giselle Lopez accept Medicare?
- Giselle Lopez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Giselle Lopez's NPI active?
- Yes — Giselle Lopez's NPI (1821415290) is active in the NPPES registry as of the last update on 2014-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.