Daniel Chang, D.O.
NPI 1619265675 · Emergency Medicine Physician · La Mesa, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Chang, D.O. is a Emergency Medicine Physician provider in La Mesa, CA (NPI 1619265675).
Provider details
- NPI number
- 1619265675
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
271 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 54 | $96 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 54 | $135 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 44 | $191 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 23 | $16 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 19 | $8 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 36 | 35 |
| Cephalexin | 32 | 32 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 26 | 26 |
| Azithromycin | 22 | 21 |
| Methylprednisolone | 22 | 22 |
| Mupirocin | 18 | 17 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 15 | 15 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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
- 2011-07-12
- Last updated
- 2017-10-30
Frequently asked questions
- What is Daniel Chang's NPI number?
- Daniel Chang's National Provider Identifier (NPI) is 1619265675, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Chang's specialty?
- Daniel Chang is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Chang located?
- Daniel Chang's practice location on file with NPPES is 5525 Grossmont Center Dr, La Mesa, CA 91942-3009.
- What is Daniel Chang's phone number?
- The practice phone number listed in the NPPES registry for Daniel Chang is (800) 827-4277.
- Does Daniel Chang accept Medicare?
- Daniel Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Chang's NPI active?
- Yes — Daniel Chang's NPI (1619265675) is active in the NPPES registry as of the last update on 2017-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.