Physician Profile
Unclaimed ProfileAbout CHIA
Lin Ma Chia, O.D. is an optometrist based in Waltham, MA. According to Medicare claims data, Lin cared for 100 Medicare patients across 105 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (781) 890-9922
- Email not available
Practice Locations
400 5TH AVE SUITE 510
Waltham, MA 02451
Procedures Most Often Billed to Medicare
105 services · 100 patients · 6 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient complete exam of visual system | Treatment | 92014 |
18 |
| Imaging of optic nerve | Treatment | 92133 |
13 |
| Exam of visual field with extended testing | Treatment | 92083 |
13 |
| Imaging of retina | Treatment | 92134 |
12 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
26 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
23 |
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 optometrists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other optometrists in Waltham 6
Same specialty, same city.
More connections — 8 related providers in 1 group
Also performs Established patient complete exam of visual system 8
Providers in MA who bill this service to Medicare most often.
Common questions
What does Dr. Chia specialize in?
Dr. Chia is an optometrist in Waltham, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Optometrist”.
NPI registry
Where is Dr. Chia located?
Dr. Chia is listed at 400 5TH AVE SUITE 510, Waltham, MA 02451. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Chia's phone number?
The number on file is (781) 890-9922. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chia's NPI number?
Dr. Chia's National Provider Identifier is 1578995866. 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
How long has Dr. Chia been practicing?
Dr. Chia has 13+ years experience. Registered with an NPI since 2013. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What does Dr. Chia do most often?
According to Medicare billing data, Dr. Chia provides treatments such as established patient complete exam of visual system and imaging of optic nerve, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Chia confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chia. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.