Andrew G. Iwach MD a Professional Corporation
NPI 1598834632 · Orthopaedic Surgery Physician · San Francisco, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew G. Iwach MD a Professional Corporation is a Orthopaedic Surgery Physician organization in San Francisco, CA (NPI 1598834632).
Provider details
- NPI number
- 1598834632
- Entity type
- Organization
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Andrew Iwach, Owner(415) 989-2020
- License
- G56142 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Other names (DBA / former)
- Doing business as
- Glaucoma Associates of Northern California
Registry dates
- Enumerated
- 2006-11-06
- Last updated
- 2014-02-26
Frequently asked questions
- What is Andrew G. Iwach MD a Professional Corporation's NPI number?
- Andrew G. Iwach MD a Professional Corporation's National Provider Identifier (NPI) is 1598834632, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Andrew G. Iwach MD a Professional Corporation?
- Andrew G. Iwach MD a Professional Corporation is classified in the NPPES registry as Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew G. Iwach MD a Professional Corporation located?
- Andrew G. Iwach MD a Professional Corporation's practice location on file with NPPES is 55 Stevenson St, San Francisco, CA 94105-2936.
- What is Andrew G. Iwach MD a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Andrew G. Iwach MD a Professional Corporation is (415) 981-2020.
- Does Andrew G. Iwach MD a Professional Corporation accept Medicare?
- Andrew G. Iwach MD a Professional Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Andrew G. Iwach MD a Professional Corporation?
- The authorized official listed on Andrew G. Iwach MD a Professional Corporation's NPPES record is Andrew Iwach, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Andrew G. Iwach MD a Professional Corporation's NPI active?
- Yes — Andrew G. Iwach MD a Professional Corporation's NPI (1598834632) is active in the NPPES registry as of the last update on 2014-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.