John Kowalczyk, DO
NPI 1548254089 · Urology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Kowalczyk, DO is a Urology Physician provider in Los Angeles, CA (NPI 1548254089).
Provider details
- NPI number
- 1548254089
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A6818 (CA)
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
7 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,153 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 | 634 | $99 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 246 | $13 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 204 | $9 |
| Automated Urinalysis Test81003 | 181 | $2 |
| Acupuncture, Initial 15 Minutes97810 | 157 | $41 |
| Acupuncture, Each Additional 15 Minutes97811 | 155 | $30 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 1,297 | 342 |
| Finasteride | 832 | 207 |
| Dutasteride | 580 | 139 |
| Vibegronbrand: Gemtesa | 273 | 50 |
| Doxazosin Mesylate | 193 | 48 |
| Mirabegronbrand: Myrbetriq | 192 | 36 |
| Alfuzosin Hclbrand: Alfuzosin Hcl Er | 140 | 36 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,625 across 118 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 (6)
- 2211 W Magnolia Blvd Ste 260Burbank, CA 91506-1770Phone: (213) 977-1176Fax: (213) 977-0668
- 1517 Garfield AveCommerce, CA 90022-5421Phone: (818) 979-9899
- 1500 S Central Ave Ste 200aGlendale, CA 91204-2786Phone: (213) 977-1176Fax: (213) 977-0668
- 435 Arden Ave Ste 530Glendale, CA 91203-1140Phone: (818) 979-9899
- 1709 W Manchester AveLos Angeles, CA 90047-3033Phone: (818) 979-9899
- 8223 Woodman AvePanorama City, CA 91402-5426Phone: (818) 979-9899
Registry dates
- Enumerated
- 2005-09-09
- Last updated
- 2022-11-22
- Certified
- 2022-11-22
Frequently asked questions
- What is John Kowalczyk's NPI number?
- John Kowalczyk's National Provider Identifier (NPI) is 1548254089, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Kowalczyk's specialty?
- John Kowalczyk is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is John Kowalczyk located?
- John Kowalczyk's practice location on file with NPPES is 1127 Wilshire Blvd, Los Angeles, CA 90017-3901.
- What is John Kowalczyk's phone number?
- The practice phone number listed in the NPPES registry for John Kowalczyk is (213) 977-1176.
- Does John Kowalczyk accept Medicare?
- John Kowalczyk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Kowalczyk's NPI active?
- Yes — John Kowalczyk's NPI (1548254089) is active in the NPPES registry as of the last update on 2022-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.