John Sharkey, NP-C
NPI 1336532456 · Adult Health Nurse Practitioner · Greenville, SC
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Sharkey, NP-C is a Adult Health Nurse Practitioner provider in Greenville, SC (NPI 1336532456).
Provider details
- NPI number
- 1336532456
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Male
- Sole proprietor
- No
- License
- 19347 (SC)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,659 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 422 | $77 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 407 | $13 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 327 | $9 |
| Kidney Function Blood Test Panel80069 | 124 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 107 | $8 |
| Creatinine Level to Test for Kidney Function Or Muscle Injury |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 88 | 34 |
| Carvedilol | 81 | 27 |
| Allopurinol | 62 | 20 |
| Lisinopril | 53 | 22 |
| Dapagliflozin Propanediolbrand: Farxiga | 52 | 11 |
| Furosemide | 47 | 25 |
| Gabapentin | 41 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,406 across 65 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-03-13
- Last updated
- 2015-03-13
Frequently asked questions
- What is John Sharkey's NPI number?
- John Sharkey's National Provider Identifier (NPI) is 1336532456, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sharkey's specialty?
- John Sharkey is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Sharkey located?
- John Sharkey's practice location on file with NPPES is 203 Mills Ave, Greenville, SC 29605-4019.
- What is John Sharkey's phone number?
- The practice phone number listed in the NPPES registry for John Sharkey is (864) 271-1844.
- Does John Sharkey accept Medicare?
- John Sharkey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Sharkey's NPI active?
- Yes — John Sharkey's NPI (1336532456) is active in the NPPES registry as of the last update on 2015-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.