J. Sidney Alexander, M.D., P.C.
NPI 1538204003 · Psychiatry Physician · Knoxville, TN
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
J. Sidney Alexander, M.D., P.C. is a Psychiatry Physician organization in Knoxville, TN (NPI 1538204003).
Provider details
- NPI number
- 1538204003
- Entity type
- Organization
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- James Alexander, President(865) 470-4206
- License
- 11867 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
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
- 2007-02-21
- Last updated
- 2008-07-01
Frequently asked questions
- What is J. Sidney Alexander, M.D., P.C.'s NPI number?
- J. Sidney Alexander, M.D., P.C.'s National Provider Identifier (NPI) is 1538204003, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is J. Sidney Alexander, M.D., P.C.?
- J. Sidney Alexander, M.D., P.C. is classified in the NPPES registry as Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is J. Sidney Alexander, M.D., P.C. located?
- J. Sidney Alexander, M.D., P.C.'s practice location on file with NPPES is 9111 Cross Park Dr, Knoxville, TN 37923-4506.
- What is J. Sidney Alexander, M.D., P.C.'s phone number?
- The practice phone number listed in the NPPES registry for J. Sidney Alexander, M.D., P.C. is (865) 470-4206.
- Does J. Sidney Alexander, M.D., P.C. accept Medicare?
- J. Sidney Alexander, M.D., P.C. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for J. Sidney Alexander, M.D., P.C.?
- The authorized official listed on J. Sidney Alexander, M.D., P.C.'s NPPES record is James Alexander, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is J. Sidney Alexander, M.D., P.C.'s NPI active?
- Yes — J. Sidney Alexander, M.D., P.C.'s NPI (1538204003) is active in the NPPES registry as of the last update on 2008-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.