Theodore Hsu, DO
NPI 1134689979 · Physical Medicine & Rehabilitation Physician · Hummelstown, PA
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theodore Hsu, DO is a Physical Medicine & Rehabilitation Physician provider in Hummelstown, PA (NPI 1134689979).
Provider details
- NPI number
- 1134689979
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,214 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 1,002 | $75 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 120 | $164 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 92 | $108 |
Typical Medicare-allowed amounts for these services range $75–$164 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Baclofen | 27 | 15 |
| Pregabalin | 22 | — |
| Gabapentin | 19 | 13 |
| Atorvastatin Calcium | 18 | 17 |
| Pantoprazole Sodium | 16 | 16 |
| Tamsulosin Hcl | 15 | 11 |
| Cyclobenzaprine Hcl | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 7600 River RdNorth Bergen, NJ 07047-6217Phone: (718) 916-3650
- 21838 Hartland AveOakland Gardens, NY 11364-3533Phone: (718) 916-3650
- 1500 Highlands DrLititz, PA 17543-7694Phone: (717) 625-5000
Registry dates
- Enumerated
- 2019-03-20
- Last updated
- 2023-09-27
- Certified
- 2023-09-27
Frequently asked questions
- What is Theodore Hsu's NPI number?
- Theodore Hsu's National Provider Identifier (NPI) is 1134689979, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theodore Hsu's specialty?
- Theodore Hsu is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is Theodore Hsu located?
- Theodore Hsu's practice location on file with NPPES is 1135 Olde W Chocolate Ave, Hummelstown, PA 17036-9188.
- What is Theodore Hsu's phone number?
- The practice phone number listed in the NPPES registry for Theodore Hsu is (717) 531-7010.
- Does Theodore Hsu accept Medicare?
- Theodore Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theodore Hsu's NPI active?
- Yes — Theodore Hsu's NPI (1134689979) is active in the NPPES registry as of the last update on 2023-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.