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William Regan, MD
NPI 1912927054 · Emergency Medicine Physician · Memphis, TN
William Regan, MD is a Emergency Medicine Physician provider in Memphis, TN (NPI 1912927054).
Provider details
- NPI number
- 1912927054
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD0000019298 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
5959 Park Ave
Memphis, TN 38119-5200
Phone: (901) 765-2182
Fax: (901) 765-2161
Street-level locationGet directions
Mailing address
5898 Brierhedge Ave
Memphis, TN 38120-2328
Registry dates
- Enumerated
- 2006-07-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Regan's NPI number?
- William Regan's National Provider Identifier (NPI) is 1912927054, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Regan's specialty?
- William Regan is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Regan located?
- William Regan's practice location on file with NPPES is 5959 Park Ave, Memphis, TN 38119-5200.
- What is William Regan's phone number?
- The practice phone number listed in the NPPES registry for William Regan is (901) 765-2182.
- Is William Regan's NPI active?
- Yes — William Regan's NPI (1912927054) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.