Peter Chang, MD
NPI 1841530458 · Neuroradiology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Chang, MD is a Neuroradiology Physician provider in San Francisco, CA (NPI 1841530458).
Provider details
- NPI number
- 1841530458
- Entity type
- Individual
- Primary specialty
- Neuroradiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A150603 (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
13 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
411 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) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 113 | $41 |
| Mri Scan of Brain Before and After Contrast70553 | 64 | $111 |
| Mri Scan of Brain Before and After Contrast70553 | 38 | $293 |
| Ct Scan of Blood Vessels of Neck With Contrast70498 | 37 | $81 |
| Ct Scan of Upper Spine Without Contrast72125 | 35 | $47 |
| Mri Scan of Brain Without Contrast70551 | 28 | $72 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,000 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
Additional practice locations (1)
- 180 Fort Washington AveHarkness Pavillion, Room 313New York, NY 10032-3722Phone: (212) 305-9729
Registry dates
- Enumerated
- 2013-02-18
- Last updated
- 2018-03-17
Frequently asked questions
- What is Peter Chang's NPI number?
- Peter Chang's National Provider Identifier (NPI) is 1841530458, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Chang's specialty?
- Peter Chang is listed in the NPPES registry with a primary specialty of Neuroradiology Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Chang located?
- Peter Chang's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is Peter Chang's phone number?
- The practice phone number listed in the NPPES registry for Peter Chang is (415) 476-1000.
- Does Peter Chang accept Medicare?
- Peter Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Chang's NPI active?
- Yes — Peter Chang's NPI (1841530458) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.