GREGORY P. MCLENNAN II MD
NPI 1912160052
Urology in Saint Louis, MO

Q: What is Gregory Mclennan's NPI number?

The NPI number for Gregory Mclennan is 1912160052. It was assigned to this individual provider in the NPPES registry on July 9, 2008.

Q: What is Gregory Mclennan's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Mclennan was last updated on July 13, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since July 09, 2008PECOS EnrolledAccepts Medicare Assignment

701 S. NEW BALLAS ROAD, SUITE 330, SAINT LOUIS, MO 63141(314) 251-8850 Get Directions Write a Review

NPPES record last updated: July 13, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

On this page

About Gregory P. Mclennan Ii Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY P. MCLENNAN II MD (NPI 1912160052) is an individual urology provider in Saint Louis, Missouri, licensed in Missouri (2014009247) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS, is affiliated with Blessing Hospital, and maintains a secondary practice location in Saint Charles.

NPPES Registry Identity

NPI1912160052

Entity TypeIndividualMale

Primary Taxonomy208800000X

Provider Legal NameGREGORY P. MCLENNAN IICredential: MD

Location Address701 S. NEW BALLAS ROAD, SUITE 330Saint Louis, MO 63141

Mailing Address701 S. New Ballas Road, Suite 330Saint Louis, MO 63141 · (314) 251-8850

Phone(314) 251-8850

Sole ProprietorNo

Medical School CMSSaint Louis University School Of MedicineGraduated 2008

Enumeration DateJuly 9, 2008

Last NPPES UpdateJuly 13, 2023

NPPES CertifiedJuly 6, 2023

✔ NPI 1912160052 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyUrologyAllopathic & Osteopathic Physicians

Taxonomy Code208800000X

License✔ Licensed in MO · 2014009247

Definition

A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.

701 S. NEW BALLAS ROAD, SUITE 330, Saint Louis, MO 63141

Open in Google Maps ↗

Secondary Practice Location 1

Location 11820 Zumbehl Rd Ste 120Saint Charles, MO 63303-2761 · Phone (314) 251-8850

Other Identifiers 2

OtherP01366917MO · Railroad Medicare

Medicaid1912160052MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory P. Mclennan Ii Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8628209327

PECOS Enrollment IDI20140828000428, I20210215001511

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 27

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

454 services334 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

414 services321 patients

Ultrasound measurement of bladder capacity after voiding 51798

Ultrasound measurement of bladder capacity after voiding is a non-invasive test that uses sound waves to create images of your bladder. It's done after you've emptied your bladder to see if there's any leftover urine, which can help diagnose certain conditions.

180 services153 patients

Diagnostic exam of bladder and urethra using an endoscope 52000

This procedure involves using a thin, flexible tube with a light, called an endoscope, to examine the bladder and urethra. It helps in identifying any abnormalities or issues that may be causing discomfort or other symptoms.

157 services130 patients

Leuprolide acetate (for depot suspension), 7.5 mg J9217

Leuprolide acetate is a medication that helps regulate certain hormone levels in your body. It's injected into your muscle once a month. This treatment can help manage various health conditions related to hormone imbalance. Always follow your doctor's instructions.

111 services13 patients

Electronic assessment of bladder emptying 51741

Electronic assessment of bladder emptying is a non-invasive test that measures how well your bladder functions. It uses ultrasound technology to create images of your bladder before and after you use the restroom, helping to identify any issues with bladder emptying.

70 services69 patients

Non-needle measurement and recording of electrical activity of muscles at bladder and bowel openings 51784

This procedure involves the use of non-invasive devices to record the electrical activity of muscles at specific body openings. It's helpful in understanding muscle function and can assist in diagnosing certain conditions.

65 services65 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

61 services61 patients

Complex measurement of pressure of urine flow in bladder with urethra pressure and voiding pressure studies 51729

This procedure helps to measure the pressure inside your bladder while passing fluid. It checks how well your bladder and the tube that carries fluid from your bladder are working. It's important for diagnosing issues with fluid flow and storage.

57 services57 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

51 services36 patients

Ultrasound scan of pelvic region through rectum 76872

An ultrasound scan of the pelvic region through the rectum is a medical procedure where a small, smooth device is gently inserted into the rectum. This device uses sound waves to create images of the internal structures in the lower abdomen, aiding in diagnosis and treatment planning.

50 services49 patients

Simple change of bladder tube 51705

A simple change of bladder tube involves replacing your current urinary drainage tube with a new one. This is done to maintain hygiene and prevent infections. It's a straightforward process, usually causing minimal discomfort, and helps ensure your body can properly dispose of waste fluids.

42 services12 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

39 services24 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

29 services28 patients

Simple removal of foreign body, stone, or stent in urethra or bladder using an endoscope 52310

This is a procedure to remove an object, stone, or tube from your urinary tract. An endoscope, a thin, flexible tube with a light and camera, is used to locate and remove the object. It is a safe and effective way to address the issue.

28 services26 patients

Exam with injections of chemical for destruction of bladder using an endoscope 52287

This procedure involves the use of a thin, flexible tube with a light (endoscope) for internal examination. A chemical is then injected to help eliminate specific issues in the bladder. It's a standard and safe process.

26 services18 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

21 services19 patients

Biopsy of prostate gland 55700

A biopsy of the prostate gland is a procedure where a small sample of tissue is taken from your body's internal gland, located near the bladder, for testing. This helps in diagnosing potential health issues. It's usually done with a fine needle and imaging technology for accuracy.

20 services20 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

19 services11 patients

Waterjet destruction of prostrate accessed through the urethra 0421T

Waterjet destruction of the prostate is a procedure where a thin tube is inserted through your urinary passage to reach the prostate. A stream of water is then used to remove excess tissue blocking urine flow.

18 services18 patients

Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle 96402

This procedure involves the injection of hormone-based anti-cancer drugs under the skin or into a muscle. These medications help to slow down or stop the growth of certain types of cancer cells. The process is usually quick and can be performed in a clinic or hospital.

18 services11 patients

Crushing of stone of ureter with insertion of stent using an endoscope 52356

This procedure involves using a thin, flexible tube (endoscope) to locate and break down kidney stones in the ureter. After this, a small tube (stent) is inserted to help maintain an open pathway for urine to flow.

16 services16 patients

Complex measurement of pressure of urine flow in bladder with voiding pressure studies 51728

This procedure measures the pressure in your bladder as it fills and empties. It helps to understand how well your bladder is functioning. Sensors record pressure levels during these processes, providing valuable data for your doctor.

14 services14 patients

Insertion of stent in ureter using an endoscope 52332

This procedure involves placing a small, flexible tube (stent) in your body's drainage system to help urine flow from the kidneys to the bladder. An endoscope, a thin tube with a light and camera, is used for precise placement.

14 services13 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

14 services14 patients

Insertion of temporary bladder tube 51701

This procedure involves placing a small tube into your lower abdomen to help drain urine from your bladder. It's a temporary measure, often used when normal urination is not possible. The tube remains in place until you can urinate on your own again.

12 services12 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

12 services11 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Blessing Hospital

Acute Care Hospitals · Quincy, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140015

Location1005 Broadway StQuincy, IL 62301 · Adams County

Emergency services Birthing friendly

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260020

Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County

Emergency services Birthing friendly

Mercy Hospital Washington

Acute Care Hospitals · Washington, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260052

Location901 East 5th StreetWashington, MO 63090 · Franklin County

Emergency services

Mercy Hospital South

Acute Care Hospitals · Saint Louis, MO

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260077

Location10010 Kennerly RoadSaint Louis, MO 63128 · St. Louis County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63141 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$128.28 typical visit price

range $55.65 – $169.38

Typical copayment $32.07 (range $13.91 – $42.34)

Most-billed visit code 99204

Established Patient

$69.50 typical visit price

range $17.76 – $137.92

Typical copayment $17.37 (range $4.44 – $34.48)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Intermittent urinary catheter; straight tip, with or without coating (teflon, silicone, silicone elastomer, or hydrophilic, etc.), each A4351

DME-Orthotic Devices · category DF008N

5 suppliers32 claims6,210 services$1.70 avg. paid by Medicare

Intermittent urinary catheter; coude (curved) tip, with or without coating (teflon, silicone, silicone elastomeric, or hydrophilic, etc.), each A4352

DME-Orthotic Devices · category DF008N

5 suppliers65 claims11,100 services$6.16 avg. paid by Medicare

Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357

DME-Orthotic Devices · category DF000N

6 suppliers13 claims37 services$9.41 avg. paid by Medicare

Lubricant, per ounce A4402

DME-Orthotic Devices · category DF010N

2 suppliers15 claims92 services$1.49 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Leave this field empty

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. GURDARSHAN S SANDHU MD

Urology

701 S. NEW BALLAS ROAD, SUITE 330
SAINT LOUIS, MO 63141

St. Louis County (314) 251-8850

HANNAH KATHRYN ROSE KASUNIC PA-C

Physician Assistant

701 S. NEW BALLAS ROAD, SUITE 330
SAINT LOUIS, MO 63141

St. Louis County (314) 251-8850

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Mclennan's NPI number?

The NPI number for Gregory Mclennan is 1912160052. It was assigned to this individual provider in the NPPES registry on July 9, 2008.

Where is Gregory Mclennan located?

Gregory Mclennan practices at 701 S. New Ballas Road, Suite 330, Saint Louis, MO 63141. The listed phone number is (314) 251-8850.

What is Gregory Mclennan's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Is Gregory Mclennan enrolled in Medicare?

Yes. Gregory Mclennan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Gregory Mclennan accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 5 other insurers list Gregory Mclennan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Gregory Mclennan affiliated with any hospitals?

According to CMS data, Gregory Mclennan is affiliated with Blessing Hospital, Mercy Hospital St Louis, Mercy Hospital Washington and Mercy Hospital South.

When was this NPI record last updated?

The NPPES record for Gregory Mclennan was last updated on July 13, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.