Peter Chang, M.D.
NPI 1801107859 · Ophthalmology Physician · Waltham, MA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Chang, M.D. is a Ophthalmology Physician provider in Waltham, MA (NPI 1801107859).
Provider details
- NPI number
- 1801107859
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 266201 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
7,326 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 | 1,382 | $46 |
| Established Patient Complete Exam of Visual System92014 | 1,216 | $147 |
| Injection of Drug Into Eye67028 | 670 | $147 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 289 | $147 |
| Established Patient Problem Focused Exam of Visual System92012 | 266 | $103 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 217 | $27 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 171 | 58 |
| Prednisolone Acetate | 156 | 85 |
| Brimonidine Tartrate | 150 | 47 |
| Methotrexate Sodiumbrand: Methotrexate | 133 | 37 |
| Timolol Maleate | 130 | 41 |
| Latanoprost | 104 | 42 |
| Mycophenolate Mofetil | 80 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$204,144 across 215 records (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 (1)
- 10 Hawthorne Pl Ste 106Boston, MA 02114-2336Phone: (617) 523-0955Fax: (617) 523-5376
Registry dates
- Enumerated
- 2010-06-24
- Last updated
- 2018-09-25
Frequently asked questions
- What is Peter Chang's NPI number?
- Peter Chang's National Provider Identifier (NPI) is 1801107859, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Chang's specialty?
- Peter Chang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Chang located?
- Peter Chang's practice location on file with NPPES is 1440 Main St, Waltham, MA 02451-1640.
- What is Peter Chang's phone number?
- The practice phone number listed in the NPPES registry for Peter Chang is (781) 891-6377.
- Does Peter Chang accept Medicare?
- Peter Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Chang's NPI active?
- Yes — Peter Chang's NPI (1801107859) is active in the NPPES registry as of the last update on 2018-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.