Stephen Keiser, MD
NPI 1659307007 · Family Medicine Physician · Greenville, SC
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Keiser, MD is a Family Medicine Physician provider in Greenville, SC (NPI 1659307007).
Provider details
- NPI number
- 1659307007
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 21254 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
710 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 223 | $117 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 108 | $59 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 85 | $9 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 70 | $45 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 62 | $42 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 135 | 48 |
| Atorvastatin Calcium | 117 | 38 |
| Lisinopril | 101 | 28 |
| Rosuvastatin Calcium | 93 | 34 |
| Losartan Potassium | 88 | 32 |
| Levothyroxine Sodium | 71 | 25 |
| Metformin Hcl |
Practice location
Mailing address
Additional practice locations (3)
- 2 Innovation DriveSuite 250Greenville, SC 29607Phone: (864) 365-0115Fax: (864) 365-0125
- 2 Innovation DriveSuite 250Greenville, SC 29607Phone: (864) 365-0115Fax: (864) 365-0125
- 2a Cleveland CtGreenville, SC 29607-2414Phone: (864) 271-7761
Registry dates
- Enumerated
- 2006-06-25
- Last updated
- 2025-10-24
- Certified
- 2025-10-24
Frequently asked questions
- What is Stephen Keiser's NPI number?
- Stephen Keiser's National Provider Identifier (NPI) is 1659307007, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Keiser's specialty?
- Stephen Keiser is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Keiser located?
- Stephen Keiser's practice location on file with NPPES is 15 Park Creek Dr, Greenville, SC 29605-4270.
- What is Stephen Keiser's phone number?
- The practice phone number listed in the NPPES registry for Stephen Keiser is (864) 271-7761.
- Does Stephen Keiser accept Medicare?
- Stephen Keiser is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Keiser's NPI active?
- Yes — Stephen Keiser's NPI (1659307007) is active in the NPPES registry as of the last update on 2025-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.