Steven Isono, MD
NPI 1548222128 · Orthopaedic Surgery Physician · Stanford, CA
Steven Isono, MD is a Orthopaedic Surgery Physician provider in Stanford, CA (NPI 1548222128).
Provider details
- NPI number
- 1548222128
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G51315 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
328 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 | 230 | $110 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 73 | $133 |
| Imaging Guidance for Procedure, 60 Minutes Or Less76000 | 25 | $16 |
Typical Medicare-allowed amounts for these services range $16–$133 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$35 across 1 record (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
- 2006-04-06
- Last updated
- 2024-04-28
- Certified
- 2024-04-28
Frequently asked questions
- What is Steven Isono's NPI number?
- Steven Isono's National Provider Identifier (NPI) is 1548222128, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Isono's specialty?
- Steven Isono is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Isono located?
- Steven Isono's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Steven Isono's phone number?
- The practice phone number listed in the NPPES registry for Steven Isono is (650) 723-4000.
- Is Steven Isono's NPI active?
- Yes — Steven Isono's NPI (1548222128) is active in the NPPES registry as of the last update on 2024-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.