Joanne Wang, MD
NPI 1255727285 · Orthopaedic Hand Surgery Physician · Simi Valley, CA
Enrolled with Medicare as Practitioner - Hand Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanne Wang, MD is a Orthopaedic Hand Surgery Physician provider in Simi Valley, CA (NPI 1255727285).
Provider details
- NPI number
- 1255727285
- Entity type
- Individual
- Primary specialty
- Orthopaedic Hand Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A174739 (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
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,129 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 | 323 | $97 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 266 | $135 |
| X-Ray of Hand, Minimum of 3 Views73130 | 257 | $42 |
| X-Ray of Wrist, Minimum of 3 Views73110 | 221 | $47 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 154 | $175 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Meloxicam | 85 | 45 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 34 | 26 |
| Methylprednisolone | 30 | 30 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 30 | 20 |
| Tramadol Hcl | 17 | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,257 across 12 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 (1)
- 137 E Thousand Oaks BlvdThousand Oaks, CA 91360-5707Phone: (805) 379-4574Fax: (805) 379-4324
Registry dates
- Enumerated
- 2015-04-07
- Last updated
- 2026-01-20
- Certified
- 2026-01-20
Frequently asked questions
- What is Joanne Wang's NPI number?
- Joanne Wang's National Provider Identifier (NPI) is 1255727285, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanne Wang's specialty?
- Joanne Wang is listed in the NPPES registry with a primary specialty of Orthopaedic Hand Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Joanne Wang located?
- Joanne Wang's practice location on file with NPPES is 2525 Erringer Rd, Simi Valley, CA 93065-2352.
- What is Joanne Wang's phone number?
- The practice phone number listed in the NPPES registry for Joanne Wang is (805) 527-1404.
- Does Joanne Wang accept Medicare?
- Joanne Wang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanne Wang's NPI active?
- Yes — Joanne Wang's NPI (1255727285) is active in the NPPES registry as of the last update on 2026-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.