William Heringer, MD
NPI 1528173127 · Internal Medicine Physician · Solvang, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Heringer, MD is a Internal Medicine Physician provider in Solvang, CA (NPI 1528173127).
Provider details
- NPI number
- 1528173127
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G38247 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,470 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 541 | $127 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 174 | $90 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 151 | $90 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 131 | $127 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 123 | $125 |
| Administration of Influenza Virus VaccineG0008 | 115 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 81 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 167 | 51 |
| Amlodipine Besylate | 159 | 45 |
| Rosuvastatin Calcium | 142 | 39 |
| Apixabanbrand: Eliquis | 107 | 17 |
| Losartan Potassium | 103 | 27 |
| Levothyroxine Sodium | 97 | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-21
- Last updated
- 2020-07-27
- Certified
- 2020-07-27
Frequently asked questions
- What is William Heringer's NPI number?
- William Heringer's National Provider Identifier (NPI) is 1528173127, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Heringer's specialty?
- William Heringer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Heringer located?
- William Heringer's practice location on file with NPPES is 2030 Viborg Rd Ste 201, Solvang, CA 93463-3226.
- What is William Heringer's phone number?
- The practice phone number listed in the NPPES registry for William Heringer is (805) 688-7200.
- Does William Heringer accept Medicare?
- William Heringer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Heringer's NPI active?
- Yes — William Heringer's NPI (1528173127) is active in the NPPES registry as of the last update on 2020-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.