Lenard Harry Hammer, M.D.
Ophthalmology Physician · Columbia, MD
Lenard Harry Hammer, M.D. is an ophthalmology physician with a practice address in Columbia, Maryland, and NPI 1306874383, issued on Jun 29, 2006. Check the license (Maryland D33667, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Lenard Harry Hammer
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- D33667 MD
Self-reported in NPPES; status is on the state search - Practice location
- 8860 Columbia 100 Parkway, Columbia, MD 21045
- Phone
- (410) 997-9900
- Enumerated
- Jun 29, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (410) 997-4498
- Medicare enrollment
- Enrolled (PECOS I20111020000412); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 1981
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 588 in Maryland → Look up another NPI →
Also registered at 8860 Columbia 100 Parkway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Becker, M.D.Ophthalmology Physician1851328314
- Gordon Lui, M.D.Ophthalmology Physician1356381974
- Cristina Rouiller, O.D.Optometrist1811924855
Verify Lenard Harry Hammer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D33667Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% more Medicare Part D claims than the average ophthalmology physician in 2024
1,832 Medicare Part D claims for 524 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Latanoprost639 claims
- Dorzolamide-Timolol358 claims
- Lumigan120 claims
- Timolol Maleate103 claims
- Vyzulta69 claims
- Travoprost48 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 MIPS final score for 2023 (Medicare payment program): 0 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).
Industry payments in 2024: $233.71
11 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 one group practice
- Medical Eye Center PAOlney, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lenard Harry Hammer among 588 ophthalmology physician records in Maryland
Lenard Harry Hammer, M.D. is one of 588 ophthalmology physician records with a practice address in Maryland. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 44% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1981 · median 2002 among the 369 with a school on file
- Record last updated2007 · 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Maryland
There are 588 ophthalmology physician records in Maryland.
All 588 in Maryland → Every provider in Columbia → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Scott Becker, M.D.Columbia, MD 210451851328314
- Gordon Lui, M.D.Columbia, MD 210451356381974
- Patrick Tong, M.D., PH.D.Columbia, MD 210451205861028
- Brian Winter, M.D.Columbia, MD 210451053349852
- Lucy Xu, M.DColumbia, MD 210451831586072
- Yiyun ZhouColumbia, MD 210451326501537
- Dean Glaros, MDColumbia, MD 210441588627624
- David Glasser, M.D.Columbia, MD 210441275501785
Common questions
What is Lenard Harry Hammer, M.D.'s NPI number?
Lenard Harry Hammer, M.D.'s National Provider Identifier (NPI) is 1306874383, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lenard Harry Hammer, M.D. located?
The NPPES record lists a practice address at 8860 Columbia 100 Parkway, Columbia, MD, 21045. Phone: (410) 997-9900. Providers update this record themselves, so call before visiting.
How can I verify Lenard Harry Hammer, M.D.'s license?
NPPES lists Maryland license number D33667, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Lenard Harry Hammer, M.D. prescribe under Medicare Part D?
In 2024, Lenard Harry Hammer, M.D. had 1,832 Medicare Part D claims for 524 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Lenard Harry Hammer, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 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.