Shwu-Yn Chang, CRNP
NPI 1710520853 · Rheumatology Physician · Middletown, PA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shwu-Yn Chang, CRNP is a Rheumatology Physician provider in Middletown, PA (NPI 1710520853).
Provider details
- NPI number
- 1710520853
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- CRNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- SP020842 (PA)
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
6 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
84 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $79 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 35 | $116 |
Typical Medicare-allowed amounts for these services range $79–$116 (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 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 128 | 32 |
| Prednisone | 123 | 54 |
| Hydroxychloroquine Sulfate | 99 | 34 |
| Meloxicam | 75 | 19 |
| Sulfasalazine | 72 | 27 |
| Adalimumabbrand: Humira(cf) Pen | 59 | — |
| Tramadol Hcl | 36 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-10-22
- Last updated
- 2019-10-22
Frequently asked questions
- What is Shwu-Yn Chang's NPI number?
- Shwu-Yn Chang's National Provider Identifier (NPI) is 1710520853, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shwu-Yn Chang's specialty?
- Shwu-Yn Chang is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Shwu-Yn Chang located?
- Shwu-Yn Chang's practice location on file with NPPES is 3100 Schoolhouse Rd, Middletown, PA 17057-3548.
- What is Shwu-Yn Chang's phone number?
- The practice phone number listed in the NPPES registry for Shwu-Yn Chang is (717) 531-5384.
- Does Shwu-Yn Chang accept Medicare?
- Shwu-Yn Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shwu-Yn Chang's NPI active?
- Yes — Shwu-Yn Chang's NPI (1710520853) is active in the NPPES registry as of the last update on 2019-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.