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Gary Allen, M.D.
NPI 1881637601 · Anesthesiology Physician · Simpsonville, SC
Gary Allen, M.D. is a Anesthesiology Physician provider in Simpsonville, SC (NPI 1881637601).
Provider details
- NPI number
- 1881637601
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 13914 (SC)
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
20 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
104 River Walk Blvd
Simpsonville, SC 29681-4753
Phone: (864) 963-7287
Street-level locationGet directions
Mailing address
104 River Walk Blvd.
Simpsonville, SC 29681
Registry dates
- Enumerated
- 2006-06-13
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gary Allen's NPI number?
- Gary Allen's National Provider Identifier (NPI) is 1881637601, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Allen's specialty?
- Gary Allen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Allen located?
- Gary Allen's practice location on file with NPPES is 104 River Walk Blvd, Simpsonville, SC 29681-4753.
- What is Gary Allen's phone number?
- The practice phone number listed in the NPPES registry for Gary Allen is (864) 963-7287.
- Is Gary Allen's NPI active?
- Yes — Gary Allen's NPI (1881637601) 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.