George Chang Chien, D.O.
NPI 1346565280 · Interventional Pain Medicine Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
George Chang Chien, D.O. is a Interventional Pain Medicine Physician provider in Ventura, CA (NPI 1346565280).
Provider details
- NPI number
- 1346565280
- Entity type
- Individual
- Primary specialty
- Interventional Pain Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A14068 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
68 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) |
|---|---|---|
| Ultrasonic Guidance for Needle Placement76942 | 68 | $33 |
Typical Medicare-allowed amounts for these services range $33–$33 (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 |
|---|---|---|
| Tramadol Hcl | 184 | 26 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 178 | 20 |
| Gabapentin | 96 | 20 |
| Pregabalin | 58 | 11 |
| Baclofen | 41 | 13 |
| Meloxicam | 39 | 15 |
| Nortriptyline Hcl | 32 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,162 across 34 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 (3)
- 825 N 10th StSanta Paula, CA 93060-1309Phone: (805) 933-8650
- 3291 Loma Vista RdVentura, CA 93003Phone: (805) 648-9830
- 300 Hillmont AveVentura, CA 93003-1651Phone: (805) 652-6000
Registry dates
- Enumerated
- 2010-04-04
- Last updated
- 2024-12-05
- Certified
- 2024-12-05
Frequently asked questions
- What is George Chang Chien's NPI number?
- George Chang Chien's National Provider Identifier (NPI) is 1346565280, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is George Chang Chien's specialty?
- George Chang Chien is listed in the NPPES registry with a primary specialty of Interventional Pain Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is George Chang Chien located?
- George Chang Chien's practice location on file with NPPES is 133 W Santa Clara St, Ventura, CA 93001-2543.
- What is George Chang Chien's phone number?
- The practice phone number listed in the NPPES registry for George Chang Chien is (805) 641-5600.
- Does George Chang Chien accept Medicare?
- George Chang Chien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is George Chang Chien's NPI active?
- Yes — George Chang Chien's NPI (1346565280) is active in the NPPES registry as of the last update on 2024-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.