Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William J Heringer MD A Professional Medical Corporation

Primary Care Clinic/Center in Solvang, CA · enumerated 2019 · authorized official Amy Comer, Office Manager.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1578107686

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Registry record

Entity type Organization (Type 2)

Legal business name William J Heringer MD A Professional Medical Corporation

Practice address 2030 Viborg Rd Ste 201, Solvang, CA, 93463

Phone (805) 688-7200

Fax (805) 688-2894

Enumeration date Oct 31, 2019

Last updated in NPPES Oct 31, 2019

Taxonomy & classification

261QP2300X Primary Care Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Amy Comer

Title Office Manager

Phone (805) 688-7200

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is William J Heringer MD A Professional Medical Corporation located?

The practice location on file with NPPES is in Solvang, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2019-10-31. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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William Heringer Internal Medicine Physician · Solvang, CA NPI 1528173127

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-31.