Allen Chiang, M.D.
NPI 1326212960 · Ophthalmology Physician · Plymouth Meeting, PA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allen Chiang, M.D. is a Ophthalmology Physician provider in Plymouth Meeting, PA (NPI 1326212960).
Provider details
- NPI number
- 1326212960
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA09259400 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
13,139 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) |
|---|---|---|
| Imaging of Retina92134 | 5,133 | $42 |
| Injection of Drug Into Eye67028 | 3,661 | $133 |
| Established Patient Problem Focused Exam of Visual System92012 | 2,431 | $93 |
| Established Patient Complete Exam of Visual System92014 | 844 | $130 |
| Unclassified BiologicsJ3590 | 271 | $1,792 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 209 | $178 |
| Extended Exam of the Back Part of the Eye With Retinal Drawing |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 113 | 69 |
| Ketorolac Tromethamine | 81 | 40 |
| Ofloxacin | 23 | 23 |
| Brimonidine Tartrate | 22 | 14 |
| Bromfenac Sodiumbrand: Prolensa | 18 | — |
| Bromfenac Sodium | 17 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 17 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$53 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
Registry dates
- Enumerated
- 2008-04-15
- Last updated
- 2019-05-06
Frequently asked questions
- What is Allen Chiang's NPI number?
- Allen Chiang's National Provider Identifier (NPI) is 1326212960, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allen Chiang's specialty?
- Allen Chiang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Allen Chiang located?
- Allen Chiang's practice location on file with NPPES is 4060 Butler Pike, Plymouth Meeting, PA 19462-1560.
- What is Allen Chiang's phone number?
- The practice phone number listed in the NPPES registry for Allen Chiang is (800) 331-6634.
- Does Allen Chiang accept Medicare?
- Allen Chiang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allen Chiang's NPI active?
- Yes — Allen Chiang's NPI (1326212960) is active in the NPPES registry as of the last update on 2019-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.