Physician Profile
Peter Y. Chang, M.D.
Unclaimed ProfileAbout Dr. Chang
Based in Waltham, MA, Peter Y. Chang, M.D. is listed in the NPI registry under ophthalmology. Peter graduated from Tufts University School of Medicine in 2008. Medicare claims data shows Peter provided 31,635 services to 3,272 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (781) 891-6377
- Email not available
Practice Locations
1440 MAIN ST STE 201
Waltham, MA 02451
Conditions Commonly Evaluated or Treated
Within Ophthalmology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Eye injuries
Procedures & services
Most searched procedures
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
31,635 services · 3,272 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Injection of drug into eye | Procedure | 67028 |
670 |
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
179 |
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
173 |
| Imaging of retina | Treatment | 92134 |
1,382 |
| Established patient complete exam of visual system | Treatment | 92014 |
1,216 |
| Established patient problem focused exam of visual system | Treatment | 92012 |
266 |
| Measurement of corneal curvature and depth of eye | Treatment | 92136 |
217 |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
202 |
| New patient complete exam of visual system | Treatment | 92004 |
199 |
| Exam of visual field with extended testing | Treatment | 92083 |
121 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other ophthalmology specialists at this location 3
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other ophthalmology specialists in Waltham 6
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Tufts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at Tufts University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug into eye 8
Providers in MA who bill this service to Medicare most often.
Common questions
What does Dr. Chang specialize in?
Dr. Chang is an ophthalmology in Waltham, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
Where is Dr. Chang located?
Dr. Chang is listed at 1440 MAIN ST STE 201, Waltham, MA 02451. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Chang's phone number?
The number on file is (781) 891-6377. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Chang?
Dr. Chang's National Provider Identifier is 1801107859. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Chang go to medical school?
Dr. Chang attended Tufts University School of Medicine, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Chang have?
Dr. Chang has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Chang do most often?
According to Medicare billing data, Dr. Chang performs procedures including injection of drug into eye, insertion of needle into vein for collection of blood sample and removal of cataract with insertion of prosthetic lens; provides treatments such as imaging of retina and established patient complete exam of visual system, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Chang's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chang. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.