Peter Louis Lou, MD
Ophthalmology Physician · Boston, MA
Peter Louis Lou, MD is an ophthalmology physician with a practice address in Boston, Massachusetts, and NPI 1316937709, issued on Oct 26, 2005. Check the license (Massachusetts 41309, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Peter Louis Lou
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 41309 MA
Self-reported in NPPES; status is on the state search - Practice location
- 10 Hawthorne PL, Boston, MA 02114
- Phone
- (617) 523-0955
- Enumerated
- Oct 26, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (617) 523-5376
- Medicaid ID
- 2061538 MA
- Medicare enrollment
- Enrolled (PECOS I20050511000118); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 10 Hawthorne PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Peter Louis Lou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 41309Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average ophthalmology physician in 2024
75 Medicare Part D claims for 27 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D.
Most prescribed
- Ketorolac Tromethamine28 claims
- Latanoprost11 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): 100 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: $1,264.30
28 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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 4 group practices
- Andover Eye Associates, IncAndover, MA
- Massachusetts Eye Research And Surgery Institution PCWaltham, MA
- North Suburban Eye Associates LLCWakefield, MA
- Retina Consultants OF Worcester PCWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter Louis Lou among 791 ophthalmology physician records in Massachusetts
Peter Louis Lou, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 77% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1974 · median 2002 among the 518 with a school on file
- Record last updated2026 · 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
- Shizuo Mukai, M.D.Boston, MA 021141164412250
Common questions
What is Peter Louis Lou, MD's NPI number?
Peter Louis Lou, MD's National Provider Identifier (NPI) is 1316937709, issued on Oct 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Peter Louis Lou, MD located?
The NPPES record lists a practice address at 10 Hawthorne PL, Boston, MA, 02114. Phone: (617) 523-0955. Providers update this record themselves, so call before visiting.
How can I verify Peter Louis Lou, MD's license?
NPPES lists Massachusetts license number 41309, 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 Peter Louis Lou, MD prescribe under Medicare Part D?
In 2024, Peter Louis Lou, MD had 75 Medicare Part D claims for 27 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Peter Louis Lou, MD's MIPS final score?
The 2023 MIPS final score is 100 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.