JEFFREY ROBERT MERZ-HERRALA MD
NPI 1619505120
Emergency Medicine in San Francisco, CA

Q: What is Jeffrey Merz-herrala's NPI number?

The NPI number for Jeffrey Merz-herrala is 1619505120. It was assigned to this individual provider in the NPPES registry on March 30, 2020. The provider is also known as Jeffrey Robert Herrala.

Q: What is Jeffrey Merz-herrala's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Active since March 30, 2020PECOS EnrolledAccepts Medicare Assignment

520 ILLINOIS ST, SAN FRANCISCO, CA 94143(415) 353-9188 Get Directions Write a Review

NPPES record last updated: September 23, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 14, 2025, Mar 11, 2025, Mar 30, 2020 (3 updates tracked since 2020).

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About Jeffrey Robert Merz-herrala Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JEFFREY ROBERT MERZ-HERRALA MD (NPI 1619505120) is an individual emergency medicine provider in San Francisco, California, licensed in California (A184839) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2020).

NPPES Registry Identity

NPI1619505120

Entity TypeIndividualMale

Primary Taxonomy207P00000X

Provider Legal NameJEFFREY ROBERT MERZ-HERRALACredential: MD

Location Address520 ILLINOIS STSan Francisco, CA 94143-2501

Mailing Address520 Illinois StSan Francisco, CA 94143-2501 · (415) 353-9188

Phone(415) 353-9188

Sole ProprietorNo

Medical School CMSHarvard Medical SchoolGraduated 2020

Enumeration DateMarch 30, 2020

Last NPPES UpdateSeptember 23, 20253 updates tracked since enumeration

NPPES CertifiedSeptember 23, 2025

✔ NPI 1619505120 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in CA · A184839

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

520 ILLINOIS ST, San Francisco, CA 94143

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Other Names 1

Former Name (1)Jeffrey Robert Herrala

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Jeffrey Robert Merz-herrala Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2668829516

PECOS Enrollment IDI20231114002791

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JAMES ANTHONY RADFORD DO, DC

Family Medicine