Jeffrey Merz-Herrala, MD
NPI 1619505120 · Emergency Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Merz-Herrala, MD is a Emergency Medicine Physician provider in San Francisco, CA (NPI 1619505120).
Provider details
- NPI number
- 1619505120
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A184839 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$30 across 1 record (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
Additional practice locations (2)
- 1411 E 31st StOakland, CA 94602-1092Phone: (612) 849-0040
- 1001 Potrero Ave. Bldg. 25 1st FloorSan Francisco, CA 94110-3518Phone: (628) 206-8111
Registry dates
- Enumerated
- 2020-03-30
- Last updated
- 2025-09-23
- Certified
- 2025-09-23
Frequently asked questions
- What is Jeffrey Merz-Herrala's NPI number?
- Jeffrey Merz-Herrala's National Provider Identifier (NPI) is 1619505120, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Merz-Herrala's specialty?
- Jeffrey Merz-Herrala is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Merz-Herrala located?
- Jeffrey Merz-Herrala's practice location on file with NPPES is 520 Illinois St, San Francisco, CA 94143-2501.
- What is Jeffrey Merz-Herrala's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Merz-Herrala is (415) 353-9188.
- Does Jeffrey Merz-Herrala accept Medicare?
- Jeffrey Merz-Herrala is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Merz-Herrala's NPI active?
- Yes — Jeffrey Merz-Herrala's NPI (1619505120) is active in the NPPES registry as of the last update on 2025-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.