What is Cynthia Gasper's NPI number?

Cynthia Gasper's National Provider Identifier (NPI) is 1558697946, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Cynthia Gasper's specialty?

Cynthia Gasper is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).

Where is Cynthia Gasper located?

Cynthia Gasper's practice location on file with NPPES is 1001 Potrero Avenue, Bldg 3, 1st Floor, San Francisco, CA 94110.

What is Cynthia Gasper's phone number?

The practice phone number listed in the NPPES registry for Cynthia Gasper is (415) 353-1613.

Does Cynthia Gasper accept Medicare?

Cynthia Gasper is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Cynthia Gasper's NPI active?

Yes — Cynthia Gasper's NPI (1558697946) is active in the NPPES registry as of the last update on 2023-01-04.

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Cynthia Gasper, M.D.

NPI 1558697946 · Anatomic Pathology Physician · San Francisco, CA

Cynthia Gasper, M.D. is a Anatomic Pathology Physician provider in San Francisco, CA (NPI 1558697946).

Provider details

NPI number: 1558697946
Entity type: Individual
Primary specialty: Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Female
Sole proprietor: No
License: A114754 (CA)

Practice location

1001 Potrero Avenue, Bldg 3, 1st Floor

San Francisco, CA 94110

Phone: (415) 353-1613

Fax: (628) 206-5988

Street-level locationGet directions

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Mailing address

1001 Potrero Avenue, Bldg 3, 1st Floor

San Francisco, CA 94110

Specialties & taxonomies

Anatomic Pathology PhysicianPrimary207ZP0101XLicense A114754 (CA)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(67/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
17 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
700 Medicare services, 2024 (ranked within specialty)

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 methodology.

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	241	$31
Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305	134	$42
Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342	88	$39
Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307	82	$92
Surgical Pathology Consultation and Report on Referred Slides Prepared Elsewhere88321	49	$93
Pathology Examination of Tissue Using a Microscope, High Complexity88309	30	$162

Enumerated: 2009-10-20
Last updated: 2023-01-04
Certified: 2023-01-04

Frequently asked questions

What is Cynthia Gasper's NPI number?: Cynthia Gasper's National Provider Identifier (NPI) is 1558697946, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Cynthia Gasper's specialty?: Cynthia Gasper is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
Where is Cynthia Gasper located?: Cynthia Gasper's practice location on file with NPPES is 1001 Potrero Avenue, Bldg 3, 1st Floor, San Francisco, CA 94110.
What is Cynthia Gasper's phone number?: The practice phone number listed in the NPPES registry for Cynthia Gasper is (415) 353-1613.
Does Cynthia Gasper accept Medicare?: Cynthia Gasper is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Cynthia Gasper's NPI active?: Yes — Cynthia Gasper's NPI (1558697946) is active in the NPPES registry as of the last update on 2023-01-04.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)