Gregory Mclennan, MD
NPI 1912160052 · Urology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Mclennan, MD is a Urology Physician provider in Saint Louis, MO (NPI 1912160052).
Provider details
- NPI number
- 1912160052
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2014009247 (MO)
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
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,046 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 454 | $87 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 414 | $122 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 180 | $11 |
| Diagnostic Exam of Bladder and Urethra Using an Endoscope52000 | 157 | $220 |
| 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 | 145 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 798 | 264 |
| Mirabegronbrand: Myrbetriq | 315 | 72 |
| Ciprofloxacin Hcl | 295 | 248 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 266 | 221 |
| Finasteride | 242 | 84 |
| Vibegronbrand: Gemtesa | 175 | 48 |
| Oxybutynin Chloride |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,677 across 152 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
Additional practice locations (1)
- 1820 Zumbehl Rd Ste 120Saint Charles, MO 63303-2761Phone: (314) 251-8850
Registry dates
- Enumerated
- 2008-07-09
- Last updated
- 2023-07-13
- Certified
- 2023-07-06
Frequently asked questions
- What is Gregory Mclennan's NPI number?
- Gregory Mclennan's National Provider Identifier (NPI) is 1912160052, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Mclennan's specialty?
- Gregory Mclennan is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Mclennan located?
- Gregory Mclennan's practice location on file with NPPES is 701 S. New Ballas Road, Suite 330, Saint Louis, MO 63141.
- What is Gregory Mclennan's phone number?
- The practice phone number listed in the NPPES registry for Gregory Mclennan is (314) 251-8850.
- Does Gregory Mclennan accept Medicare?
- Gregory Mclennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Mclennan's NPI active?
- Yes — Gregory Mclennan's NPI (1912160052) is active in the NPPES registry as of the last update on 2023-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.