Crystal Li Zhang, MD
Cornea and External Diseases Specialist Physician · Waltham, MA
Crystal Li Zhang, MD is a cornea and external diseases specialist physician with a practice address in Waltham, Massachusetts, and NPI 1376047415, issued on Mar 22, 2018. Check the license (Massachusetts 1015432, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Crystal Li Zhang
- Credential
- MD
- Primary taxonomy
- Cornea and External Diseases Specialist Physician 207WX0120X
- License number
- 1015432 MA
Self-reported in NPPES; status is on the state search - Practice location
- 195 West St, Waltham, MA 02451
- Phone
- (781) 487-2200
- Enumerated
- Mar 22, 2018
- Record last updated
- Jun 17, 2026
- Fax
- (781) 487-5717
- Medicare enrollment
- Enrolled (PECOS I20240430003429); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest cornea and external diseases specialist physician records → All 10 in Massachusetts → Look up another NPI →
Also registered at 195 West St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jaxon PowersOptometrist1265277610
- Danielle TorreOptometrist1083468482
Verify Crystal Li Zhang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1015432Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average cornea and external diseases specialist physician in 2024
875 Medicare Part D claims for 269 beneficiaries, against an average of 1,263 among the 330 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Prednisolone Acetate233 claims
- Ofloxacin127 claims
- Ketorolac Tromethamine105 claims
- Valacyclovir50 claims
- Latanoprost44 claims
- Brimonidine Tartrate35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $345.89
11 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 284 providers of this specialty with any payment received $3,109.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Ophthalmic Consultants OF Boston IncWaltham, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Crystal Li Zhang among 10 cornea and external diseases specialist physician records in Massachusetts
Crystal Li Zhang, MD is one of 10 cornea and external diseases specialist physician records with a practice address in Massachusetts. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 40% of them.
- NPI issued2018 · 40% of these records are older, 30% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Record last updated2026 · 10% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0120X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cornea and External Diseases Specialist Physician providers in Massachusetts
There are 10 cornea and external diseases specialist physician records in Massachusetts.
All 10 in Massachusetts → Every provider in Waltham → Cornea and External Diseases Specialist Physician nationwide →
The 8 cornea and external diseases specialist physician records with the nearest ZIP codes
- James Gregoire, MDBrookline, MA 024451639673676
- Sara King-Sella, MDBoston, MA 022151417505082
- Walid Sabbah, M.D.Boston, MA 022151295628626
- Azin Abazari, MDBoston, MA 021141164625133
- Stephan Ong Tone, MDCM, PHD, FRCSCBoston, MA 021141538646989
- Jae Young You, M.D.Boston, MA 021141518250679
- Paul ZhouBoston, MA 021141396494043
- Prachi Dua, M.D.Andover, MA 018101922341247
Common questions
What is Crystal Li Zhang, MD's NPI number?
Crystal Li Zhang, MD's National Provider Identifier (NPI) is 1376047415, issued on Mar 22, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Crystal Li Zhang, MD located?
The NPPES record lists a practice address at 195 West St, Waltham, MA, 02451. Phone: (781) 487-2200. Providers update this record themselves, so call before visiting.
How can I verify Crystal Li Zhang, MD's license?
NPPES lists Massachusetts license number 1015432, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Crystal Li Zhang, MD prescribe under Medicare Part D?
In 2024, Crystal Li Zhang, MD had 875 Medicare Part D claims for 269 beneficiaries; the average among cornea and external diseases specialist physician prescribers was 1,263. Part D covers Medicare prescriptions only.
What is Crystal Li Zhang, MD's MIPS final score?
The 2023 MIPS final score is 81.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.