Maggie Blair Hymowitz, M.D.
Ophthalmology Physician · Boston, MA
Maggie Blair Hymowitz, M.D. is an ophthalmology physician with a practice address in Boston, Massachusetts, and NPI 1710217401, issued on Jan 3, 2010. Check the license on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Maggie Blair Hymowitz
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 241526 NY
Self-reported in NPPES; status is on the state search - Practice location
- 243 Charles St, Boston, MA 02114
- Phone
- (617) 523-7900
- Enumerated
- Jan 3, 2010
- Record last updated
- Dec 15, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 243 Charles St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maggie Blair Hymowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Maggie Blair Hymowitz among 791 ophthalmology physician records in Massachusetts
Maggie Blair Hymowitz, M.D. is one of 791 ophthalmology physician records with a practice address in Massachusetts. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 66% of them.
- NPI issued2010 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2020 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Massachusetts
There are 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Boston → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Sandra Cremers, MDBoston, MA 021141588654040
- Thaddeus Dryja, MDBoston, MA 021141619961968
- Suzanne Freitag, MDBoston, MA 021141710974464
- Matthew Gardiner, MDBoston, MA 021141366432833
- Deeba Husain, MDBoston, MA 021141952397697
- Ula Jurkunas, MDBoston, MA 021141386634699
- Ivana Kim, M.D.Boston, MA 021141851381933
- Peter Lou, MDBoston, MA 021141316937709
Common questions
What is Maggie Blair Hymowitz, M.D.'s NPI number?
Maggie Blair Hymowitz, M.D.'s National Provider Identifier (NPI) is 1710217401, issued on Jan 3, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Maggie Blair Hymowitz, M.D. located?
The NPPES record lists a practice address at 243 Charles St, Boston, MA, 02114. Phone: (617) 523-7900. Providers update this record themselves, so call before visiting.
How can I verify Maggie Blair Hymowitz, M.D.'s license?
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.
What is Maggie Blair Hymowitz, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.3 of 100. 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.