Pauling Chang, MD
NPI 1194884692 · Therapeutic Radiology Physician · Sunnyvale, CA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Pauling Chang, MD is a Therapeutic Radiology Physician provider in Sunnyvale, CA (NPI 1194884692).
Provider details
- NPI number
- 1194884692
- Entity type
- Individual
- Primary specialty
- Therapeutic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A55058 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,063 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) |
|---|---|---|
| Intensity Modulated Treatment Delivery, Single Or Multiple Fields/Arcs,via Narrow Spatially and Temporally Modulated Beams, Binary, Dynamic Mlc, Per Treatment SessionG6015 | 375 | $492 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 284 | $158 |
| Calculation of Radiation Therapy Dose77300 | 234 | $85 |
| Radiation Treatment Delivery,3 Or More Separate Treatment Areas, Custom Blocking, Tangential Ports, Wedges, Rotational Beam, Compensators, Electron Beam; 6-10 MevG6012 | 214 | $324 |
| Design and Construction of Complex Radiation Treatment Device77334 | 196 | $163 |
| Continuing Radiation Therapy Consultation Per Week77336 | 161 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Tamsulosin Hcl | 12 |
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 no Part D record, 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-08
- Last updated
- 2022-02-03
- Certified
- 2022-02-03
Frequently asked questions
- What is Pauling Chang's NPI number?
- Pauling Chang's National Provider Identifier (NPI) is 1194884692, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Pauling Chang's specialty?
- Pauling Chang is listed in the NPPES registry with a primary specialty of Therapeutic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Pauling Chang located?
- Pauling Chang's practice location on file with NPPES is 301 Old San Francisco Rd, Sunnyvale, CA 94086-6386.
- What is Pauling Chang's phone number?
- The practice phone number listed in the NPPES registry for Pauling Chang is (408) 730-2820.
- Does Pauling Chang accept Medicare?
- Pauling Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Pauling Chang's NPI active?
- Yes — Pauling Chang's NPI (1194884692) is active in the NPPES registry as of the last update on 2022-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.