Byron Knowles, M.D., PH.D.
NPI 1225586662 · Dermatology Physician · Modesto, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Byron Knowles, M.D., PH.D. is a Dermatology Physician provider in Modesto, CA (NPI 1225586662).
Provider details
- NPI number
- 1225586662
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,753 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,591 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 688 | $92 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 438 | $52 |
| Destruction of Skin Growth, 1-14 Growths17110 | 335 | $111 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 193 | $129 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 230 | 156 |
| Ketoconazole | 146 | 88 |
| Ciclopirox | 141 | 64 |
| Clobetasol Propionate | 114 | 58 |
| Hydrocortisone | 100 | 73 |
| Ciclopirox Olaminebrand: Ciclopirox | 65 | 44 |
| Doxycycline Monohydrate | 62 | 28 |
| Fluorouracil | 57 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$886 across 28 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 (2)
- 991 Montague Expy Ste 104Milpitas, CA 95035-6809Phone: (408) 263-6073Fax: (408) 263-6077
- 751 S. Bascom AveSan Jose, CA 95128Phone: (408) 885-5110
Registry dates
- Enumerated
- 2016-09-14
- Last updated
- 2021-06-28
- Certified
- 2021-06-28
Frequently asked questions
- What is Byron Knowles's NPI number?
- Byron Knowles's National Provider Identifier (NPI) is 1225586662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Byron Knowles's specialty?
- Byron Knowles is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Byron Knowles located?
- Byron Knowles's practice location on file with NPPES is 600 Coffee Rd, Modesto, CA 95355-4201.
- What is Byron Knowles's phone number?
- The practice phone number listed in the NPPES registry for Byron Knowles is (916) 454-7533.
- Does Byron Knowles accept Medicare?
- Byron Knowles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Byron Knowles's NPI active?
- Yes — Byron Knowles's NPI (1225586662) is active in the NPPES registry as of the last update on 2021-06-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.