Stephen Bylsma, M.D.
NPI 1265435325 · Ophthalmology Physician · Santa Maria, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Bylsma, M.D. is a Ophthalmology Physician provider in Santa Maria, CA (NPI 1265435325).
Provider details
- NPI number
- 1265435325
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G71086 (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
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
5,191 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 | 1,029 | $96 |
| Imaging of Optic Nerve92133 | 805 | $39 |
| Established Patient Problem Focused Exam of Visual System92012 | 773 | $97 |
| Established Patient Complete Exam of Visual System92014 | 497 | $137 |
| Exam of Visual Field With Extended Testing92083 | 412 | $70 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 326 | $134 |
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 |
|---|---|---|
| Latanoprost | 768 | 181 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 321 | 261 |
| Prednisolone Acetate | 262 | 177 |
| Ofloxacin | 194 | 138 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 139 | 46 |
| Brimonidine Tartrate | 119 | 34 |
| Bimatoprostbrand: Lumigan | 109 | 26 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$922 across 20 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
Registry dates
- Enumerated
- 2005-05-23
- Last updated
- 2022-02-09
- Certified
- 2022-02-09
Frequently asked questions
- What is Stephen Bylsma's NPI number?
- Stephen Bylsma's National Provider Identifier (NPI) is 1265435325, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Bylsma's specialty?
- Stephen Bylsma is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Bylsma located?
- Stephen Bylsma's practice location on file with NPPES is 910 E Stowell Rd, Santa Maria, CA 93454-7001.
- What is Stephen Bylsma's phone number?
- The practice phone number listed in the NPPES registry for Stephen Bylsma is (805) 925-2637.
- Does Stephen Bylsma accept Medicare?
- Stephen Bylsma is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Bylsma's NPI active?
- Yes — Stephen Bylsma's NPI (1265435325) is active in the NPPES registry as of the last update on 2022-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.