Wan Tan Chang, M.D.
NPI 1174866859 · Family Medicine Physician · Flushing, NY
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wan Tan Chang, M.D. is a Family Medicine Physician provider in Flushing, NY (NPI 1174866859).
Provider details
- NPI number
- 1174866859
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036140874 (IL)
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
13 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
82 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 | 67 | $102 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 15 | $125 |
Typical Medicare-allowed amounts for these services range $102–$125 (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 · 89 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 502 | 77 |
| Fluticasone Propionate | 315 | 94 |
| Losartan Potassium | 302 | 49 |
| Metformin Hcl | 267 | 47 |
| Amlodipine Besylate | 200 | 40 |
| Icosapent Ethylbrand: Vascepa | 181 | 47 |
| Alendronate Sodium | 150 |
Practice location
Mailing address
Additional practice locations (1)
- 1701 Curtis RdConvenient CareChampaign, IL 61822-9678Phone: (217) 365-6203
Registry dates
- Enumerated
- 2013-04-01
- Last updated
- 2020-03-17
- Certified
- 2020-03-17
Frequently asked questions
- What is Wan Tan Chang's NPI number?
- Wan Tan Chang's National Provider Identifier (NPI) is 1174866859, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wan Tan Chang's specialty?
- Wan Tan Chang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Wan Tan Chang located?
- Wan Tan Chang's practice location on file with NPPES is 3808 Union St Ste 3k, Flushing, NY 11354-5670.
- What is Wan Tan Chang's phone number?
- The practice phone number listed in the NPPES registry for Wan Tan Chang is (718) 886-3681.
- Does Wan Tan Chang accept Medicare?
- Wan Tan Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wan Tan Chang's NPI active?
- Yes — Wan Tan Chang's NPI (1174866859) is active in the NPPES registry as of the last update on 2020-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.