Felix Chang, MD
NPI 1174987283 · Clinical Neurophysiology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Neuropsychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Felix Chang, MD is a Clinical Neurophysiology Physician provider in Stanford, CA (NPI 1174987283).
Provider details
- NPI number
- 1174987283
- Entity type
- Individual
- Primary specialty
- Clinical Neurophysiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A168531 (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 tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,179 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) |
|---|---|---|
| Continuous Intraoperative Neurophysiology Monitoring, From Outside the Operating Room (remote Or Nearby), Per Patient, (attention Directed Exclusively to One Patient) Each 15 Minutes (list in Addition to Primary Procedure)G0453 | 845 | $36 |
| Needle Measurement of Electrical Activity in Muscle With Injection of Chemical for Paralysis of Nerve Muscle95874 | 76 | $22 |
| Placement of Skin Electrodes and Measurement of Stimulated Sites on Arms and Legs95938 | 58 | $52 |
| Placement of Skin Electrodes and Measurement of Central Motor Stimulation in Arms and Legs95939 | 56 | $135 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, 2 Extremities95861 | 41 | $93 |
| Injection of Chemical for Paralysis of Nerve Muscles on Arm Or Leg, 1-4 Muscles, Each Additional Extremity |
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) |
|---|---|
| Tizanidine Hcl | 16 |
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
Additional practice locations (1)
- 725 Welch RdPalo Alto, CA 94304-1601Phone: (650) 497-8000
Registry dates
- Enumerated
- 2016-04-06
- Last updated
- 2023-11-09
- Certified
- 2023-11-09
Frequently asked questions
- What is Felix Chang's NPI number?
- Felix Chang's National Provider Identifier (NPI) is 1174987283, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Felix Chang's specialty?
- Felix Chang is listed in the NPPES registry with a primary specialty of Clinical Neurophysiology Physician (Allopathic & Osteopathic Physicians).
- Where is Felix Chang located?
- Felix Chang's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Felix Chang's phone number?
- The practice phone number listed in the NPPES registry for Felix Chang is (650) 723-4000.
- Does Felix Chang accept Medicare?
- Felix Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Felix Chang's NPI active?
- Yes — Felix Chang's NPI (1174987283) is active in the NPPES registry as of the last update on 2023-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.