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Urology

Philip A. Knorr, MD

Works at hospitals in Watsonville, CA · California

Summary

Dr. Philip A. Knorr, MD is a urologist at 1820 Main St, Watsonville, CA 95076. Phone: (831) 728-4227. Accepts Medicare assignment. In 2024, Philip A. Knorr had 489 Original Medicare patients and 19,838 services. NPI 1801981485. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Urologist (Medicare lists Urology)
  • Address: 1820 Main St, Watsonville, CA 95076 · Directions
  • Phone: (831) 728‑4227
  • Medicare: Accepts Medicare assignment
  • Hospital: Watsonville Community Hospital
  • Group practice: Pajaro Valley Health Care District
  • Medical school: University Of Nevada School Of Medicine · graduated 1984 (42 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Philip A. Knorr, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Philip A. Knorr accept Medicare assignment?
Yes. Medicare's clinician data says Philip A. Knorr accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Philip A. Knorr see?
In 2024, CMS data shows 489 Original Medicare patients and 19,838 services for Philip A. Knorr. This counts Original Medicare only and measures volume, not quality.
What is Philip A. Knorr's NPI number?
1801981485. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Philip A. Knorr, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients489
Services billed to Medicare19,838
Different services or procedures41
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Urinalysis, manual test (81002)676 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)641 services
  3. Leuprolide acetate (for depot suspension), 7.5 mg (J9217)210 services
  4. Injection of drug or substance under skin or into muscle (96372)143 services
  5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)125 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Diabetes44%
  • Arthritis41%
  • Ischemic heart disease22%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)21%

Hospitals where Philip A. Knorr works

Medicare's Facility Affiliation Data lists Philip A. Knorr at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Watsonville Community HospitalWatsonville, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050194

Practice locations

Addresses where Philip A. Knorr is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Philip A. Knorr as a member of this group (CMS data updated October 2, 2026).

  • Pajaro Valley Health Care District15 clinicians in the group

Specialties

Find other Urology doctors in California →

Other urologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All urologists in California →

Other clinicians in Pajaro Valley Health Care District

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Nevada School Of Medicine
Graduation year1984 (42 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1801981485
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians