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William Heyward, MD
NPI 1669761284 · Specialist · Berkeley, CA
William Heyward, MD is a Specialist provider in Berkeley, CA (NPI 1669761284).
Provider details
- NPI number
- 1669761284
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- C53479 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(82/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
2929 Seventh St
Suite 100
Berkeley, CA 94710-2753
Phone: (510) 665-0408
Fax: (510) 848-9750
Street-level locationGet directions
Mailing address
2929 Seventh St
Berkeley, CA 94710-2753
Registry dates
- Enumerated
- 2011-04-05
- Last updated
- 2011-04-05
Frequently asked questions
- What is William Heyward's NPI number?
- William Heyward's National Provider Identifier (NPI) is 1669761284, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Heyward's specialty?
- William Heyward is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is William Heyward located?
- William Heyward's practice location on file with NPPES is 2929 Seventh St, Berkeley, CA 94710-2753.
- What is William Heyward's phone number?
- The practice phone number listed in the NPPES registry for William Heyward is (510) 665-0408.
- Is William Heyward's NPI active?
- Yes — William Heyward's NPI (1669761284) is active in the NPPES registry as of the last update on 2011-04-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.