Steve Zhang, D.O.
NPI 1558894667 · Family Medicine Physician · Dublin, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steve Zhang, D.O. is a Family Medicine Physician provider in Dublin, CA (NPI 1558894667).
Provider details
- NPI number
- 1558894667
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
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 tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
151 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 92 | $152 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 31 | $104 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 28 | $155 |
Typical Medicare-allowed amounts for these services range $104–$155 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 78 | 24 |
| Amlodipine Besylate | 58 | 15 |
| Losartan Potassium | 28 | — |
| Lisinopril | 28 | — |
| Tamsulosin Hcl | 20 | — |
| Hydrochlorothiazide | 19 | — |
| Levothyroxine Sodium |
Practice location
Mailing address
Additional practice locations (1)
- 315 Mercy Ave Ste 301Merced, CA 95340-8367Phone: (120) 956-4350Fax: (209) 564-3598
Registry dates
- Enumerated
- 2017-04-05
- Last updated
- 2020-09-09
- Certified
- 2020-09-09
Frequently asked questions
- What is Steve Zhang's NPI number?
- Steve Zhang's National Provider Identifier (NPI) is 1558894667, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steve Zhang's specialty?
- Steve Zhang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Steve Zhang located?
- Steve Zhang's practice location on file with NPPES is 4050 Dublin Blvd, Dublin, CA 94568-3112.
- What is Steve Zhang's phone number?
- The practice phone number listed in the NPPES registry for Steve Zhang is (925) 875-6100.
- Does Steve Zhang accept Medicare?
- Steve Zhang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steve Zhang's NPI active?
- Yes — Steve Zhang's NPI (1558894667) is active in the NPPES registry as of the last update on 2020-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.