Timothy Chang, M.D., PH.D.
NPI 1710383146 · Neurology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Chang, M.D., PH.D. is a Neurology Physician provider in Los Angeles, CA (NPI 1710383146).
Provider details
- NPI number
- 1710383146
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A137522 (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
11 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
137 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 73 | $194 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 34 | $138 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 19 | $123 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 11 | $217 |
Typical Medicare-allowed amounts for these services range $123–$217 (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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 108 | 32 |
| Donepezil Hcl | 53 | 14 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa Er | 31 | 13 |
| Trazodone Hcl | 29 | — |
| Amantadine Hclbrand: Amantadine | 24 | — |
| Rasagiline Mesylate | 23 | — |
| Memantine Hclbrand: Memantine Hcl Er | 22 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-11-12
- Last updated
- 2020-01-15
- Certified
- 2020-01-15
Frequently asked questions
- What is Timothy Chang's NPI number?
- Timothy Chang's National Provider Identifier (NPI) is 1710383146, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Chang's specialty?
- Timothy Chang is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Chang located?
- Timothy Chang's practice location on file with NPPES is 300 Medical Plaza # B200, Los Angeles, CA 90095-1769.
- What is Timothy Chang's phone number?
- The practice phone number listed in the NPPES registry for Timothy Chang is (310) 794-1195.
- Does Timothy Chang accept Medicare?
- Timothy Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Chang's NPI active?
- Yes — Timothy Chang's NPI (1710383146) is active in the NPPES registry as of the last update on 2020-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.