William Chang, MD
NPI 1245223619 · Physical Medicine & Rehabilitation Physician · Lima, OH
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Chang, MD is a Physical Medicine & Rehabilitation Physician provider in Lima, OH (NPI 1245223619).
Provider details
- NPI number
- 1245223619
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- K5079 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
1,491 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,097 | $75 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 218 | $124 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 124 | $108 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 37 | $86 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 15 | $121 |
Typical Medicare-allowed amounts for these services range $75–$124 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 97 | 52 |
| Pantoprazole Sodium | 49 | 26 |
| Gabapentin | 49 | 17 |
| Atorvastatin Calcium | 39 | 16 |
| Metoprolol Tartrate | 37 | 15 |
| Apixabanbrand: Eliquis | 35 | 13 |
| Clopidogrel Bisulfate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-31
- Last updated
- 2021-02-19
- Certified
- 2021-02-19
Frequently asked questions
- What is William Chang's NPI number?
- William Chang's National Provider Identifier (NPI) is 1245223619, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Chang's specialty?
- William Chang is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is William Chang located?
- William Chang's practice location on file with NPPES is 770 W High St Ste 160, Lima, OH 45801-5900.
- What is William Chang's phone number?
- The practice phone number listed in the NPPES registry for William Chang is (419) 996-5224.
- Does William Chang accept Medicare?
- William Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Chang's NPI active?
- Yes — William Chang's NPI (1245223619) is active in the NPPES registry as of the last update on 2021-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.