Marshall Williams, M.D., PHD
NPI 1982713988 · Infectious Disease Physician · Newark, DE
Marshall Williams, M.D., PHD is a Infectious Disease Physician provider in Newark, DE (NPI 1982713988).
Provider details
- NPI number
- 1982713988
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PHD
- Sex
- Male
- Sole proprietor
- No
- License
- C10003079 (DE)
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
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2008-01-31
Frequently asked questions
- What is Marshall Williams's NPI number?
- Marshall Williams's National Provider Identifier (NPI) is 1982713988, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marshall Williams's specialty?
- Marshall Williams is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Marshall Williams located?
- Marshall Williams's practice location on file with NPPES is 537 Stanton Christiana Rd, Newark, DE 19713-2146.
- What is Marshall Williams's phone number?
- The practice phone number listed in the NPPES registry for Marshall Williams is (302) 994-9692.
- Is Marshall Williams's NPI active?
- Yes — Marshall Williams's NPI (1982713988) is active in the NPPES registry as of the last update on 2008-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.