Richard Chang, M.D.
NPI 1275669954 · Interventional Cardiology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Other (physician) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Chang, M.D. is a Interventional Cardiology Physician provider in Walnut Creek, CA (NPI 1275669954).
Provider details
- NPI number
- 1275669954
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A83588 (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
19 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
6,491 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 858 | $9 |
| Evaluation of Implantable Heart and Blood Vessel Monitoring System, Remote Up to 30 Days93297 | 823 | $77 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 682 | $214 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 507 | $17 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System Or Implantable Defibrillator System, Remote Up to 90 Days93296 | 409 | $29 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 608 | 226 |
| Apixabanbrand: Eliquis | 490 | 142 |
| Atorvastatin Calcium | 433 | 173 |
| Metoprolol Succinate | 412 | 168 |
| Amlodipine Besylate | 323 | 128 |
| Empagliflozinbrand: Jardiance | 295 | 114 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$10,765 across 118 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
- 2007-02-26
- Last updated
- 2015-08-11
Frequently asked questions
- What is Richard Chang's NPI number?
- Richard Chang's National Provider Identifier (NPI) is 1275669954, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Chang's specialty?
- Richard Chang is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Chang located?
- Richard Chang's practice location on file with NPPES is 1450 Treat Blvd, Walnut Creek, CA 94597-2168.
- What is Richard Chang's phone number?
- The practice phone number listed in the NPPES registry for Richard Chang is (925) 937-1770.
- Does Richard Chang accept Medicare?
- Richard Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Chang's NPI active?
- Yes — Richard Chang's NPI (1275669954) is active in the NPPES registry as of the last update on 2015-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.