John Tharp, M.D.
NPI 1083675441 · Specialist · Little Rock, AR
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Tharp, M.D. is a Specialist provider in Little Rock, AR (NPI 1083675441).
Provider details
- NPI number
- 1083675441
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C8184 (AR)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
26 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 26 | $45 |
Typical Medicare-allowed amounts for these services range $45–$45 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Olanzapine | 33 |
| Progesterone, Micronizedbrand: Progesterone | 30 |
| Benztropine Mesylate | 27 |
| Clonidine Hcl | 25 |
| Divalproex Sodium | 25 |
| Olmesartan Medoxomil | 23 |
| Trazodone Hcl | 21 |
| Quetiapine Fumarate | 19 |
| Anastrozole | 16 |
| Haloperidol | 14 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Tharp's NPI number?
- John Tharp's National Provider Identifier (NPI) is 1083675441, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Tharp's specialty?
- John Tharp is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is John Tharp located?
- John Tharp's practice location on file with NPPES is 1501 Aldersgate Rd, Little Rock, AR 72205-6611.
- What is John Tharp's phone number?
- The practice phone number listed in the NPPES registry for John Tharp is (501) 228-9393.
- Does John Tharp accept Medicare?
- John Tharp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Tharp's NPI active?
- Yes — John Tharp's NPI (1083675441) 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.