William Greisner, MD
NPI 1720095334 · Allergy & Immunology Physician · Lexington, KY
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Greisner, MD is a Allergy & Immunology Physician provider in Lexington, KY (NPI 1720095334).
Provider details
- NPI number
- 1720095334
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 32610 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
5,108 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) |
|---|---|---|
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 1,962 | $11 |
| Test for Allergy Using Allergenic Extract95004 | 1,687 | $3 |
| Professional Service for Multiple Injections of Allergen95117 | 1,106 | $11 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 140 | $83 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 112 | $116 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 | 38 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 206 | 72 |
| Azelastine Hcl | 175 | 61 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 90 | 43 |
| Montelukast Sodium | 81 | 19 |
| Budesonide/Formoterol Fumaratebrand: Symbicort | 80 | 22 |
| Levocetirizine Dihydrochloride | 68 | 18 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$8,001 across 93 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
- 2006-08-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Greisner's NPI number?
- William Greisner's National Provider Identifier (NPI) is 1720095334, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Greisner's specialty?
- William Greisner is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is William Greisner located?
- William Greisner's practice location on file with NPPES is 171 North Eagle Creek Drive, Lexington, KY 40509.
- What is William Greisner's phone number?
- The practice phone number listed in the NPPES registry for William Greisner is (859) 277-9112.
- Does William Greisner accept Medicare?
- William Greisner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Greisner's NPI active?
- Yes — William Greisner's NPI (1720095334) 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.