Allison Merz-Herrala, MD
NPI 1770112492 · Obstetrics & Gynecology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allison Merz-Herrala, MD is a Obstetrics & Gynecology Physician provider in San Francisco, CA (NPI 1770112492).
Provider details
- NPI number
- 1770112492
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 3288 Moanalua RdHonolulu, HI 96819-1469Phone: (310) 463-4427
Registry dates
- Enumerated
- 2020-04-04
- Last updated
- 2024-07-23
- Certified
- 2024-07-23
Frequently asked questions
- What is Allison Merz-Herrala's NPI number?
- Allison Merz-Herrala's National Provider Identifier (NPI) is 1770112492, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allison Merz-Herrala's specialty?
- Allison Merz-Herrala is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Allison Merz-Herrala located?
- Allison Merz-Herrala's practice location on file with NPPES is 1001 Potrero Ave Bldg 5, San Francisco, CA 94110-3518.
- What is Allison Merz-Herrala's phone number?
- The practice phone number listed in the NPPES registry for Allison Merz-Herrala is (628) 206-3409.
- Does Allison Merz-Herrala accept Medicare?
- Allison 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 Allison Merz-Herrala's NPI active?
- Yes — Allison Merz-Herrala's NPI (1770112492) is active in the NPPES registry as of the last update on 2024-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.