John Lacy, MD
NPI 1538487939 · Urology Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Lacy, MD is a Urology Physician provider in Knoxville, TN (NPI 1538487939).
Provider details
- NPI number
- 1538487939
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 54136 (TN)
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
16 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
5,408 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 | 1,215 | $117 |
| Urinalysis, Manual Test81002 | 1,032 | $3 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 912 | $10 |
| 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 | 523 | $15 |
| Principal Care Management Services for a Single High-Risk Disease, First 30 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99426 | 378 | $57 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 1,102 | 340 |
| Finasteride | 609 | 184 |
| Mirabegronbrand: Myrbetriq | 393 | 108 |
| Vibegronbrand: Gemtesa | 366 | 92 |
| Solifenacin Succinate | 293 | 125 |
| Alfuzosin Hclbrand: Alfuzosin Hcl Er | 189 | 55 |
| Dutasteride | 188 | 77 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,123 across 55 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
- 2010-05-10
- Last updated
- 2021-07-15
- Certified
- 2021-07-15
Frequently asked questions
- What is John Lacy's NPI number?
- John Lacy's National Provider Identifier (NPI) is 1538487939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Lacy's specialty?
- John Lacy is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is John Lacy located?
- John Lacy's practice location on file with NPPES is 1928 Alcoa Hwy Ste B222, Knoxville, TN 37920-1504.
- What is John Lacy's phone number?
- The practice phone number listed in the NPPES registry for John Lacy is (865) 305-9254.
- Does John Lacy accept Medicare?
- John Lacy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Lacy's NPI active?
- Yes — John Lacy's NPI (1538487939) is active in the NPPES registry as of the last update on 2021-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.