John Gambrill, MD
Ophthalmology Physician · Catonsville, MD
John Gambrill, MD is an ophthalmology physician with a practice address in Catonsville, Maryland, and NPI 1710033022, issued on Jan 27, 2007. Check the license (Maryland D15995, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- John Gambrill
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- D15995 MD
Self-reported in NPPES; status is on the state search - Practice location
- 715 Maiden Choice LN, Catonsville, MD 21228
- Phone
- (410) 247-5602
- Enumerated
- Jan 27, 2007
- Record last updated
- Mar 19, 2024
- Fax
- (410) 242-1756
- Medicaid ID
- 200591360 MD
- Medicare enrollment
- Enrolled (PECOS I20090807000229); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 588 in Maryland → Look up another NPI →
Also registered at 715 Maiden Choice LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Priti Amin, OTR/LOccupational Therapist1952377137
- Jillian FerraraSpeech-Language Pathologist1265846612
- Preston Gover, PTAPhysical Therapy Assistant1063935179
- Achamma KeerikkattilPhysical Therapist1356792030
- Matthew Miklosovich, DPTPhysical Therapist1154114445
- Cheryl Morrison, DPTPhysical Therapist1790121101
Verify John Gambrill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D15995Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average ophthalmology physician in 2024
398 Medicare Part D claims for 142 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Latanoprost157 claims
- Dorzolamide-Timolol71 claims
- Timolol Maleate43 claims
- Lumigan26 claims
- Brimonidine Tartrate19 claims
- Dorzolamide Hcl16 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): 78.5 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).
John Gambrill among 588 ophthalmology physician records in Maryland
John Gambrill, MD 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 2007, is newer than 56% of them.
- NPI issued2007 · 56% of these records are older, 34% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1972 · median 2002 among the 369 with a school on file
- Record last updated2024 · 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 Catonsville → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Ghulam Dastgir, M.D.Catonsville, MD 212281386759371
- W. Iliff, M.D.Catonsville, MD 212281902866379
- Eugene Salvo, M.D.Catonsville, MD 212281861484735
- Joanne Waeltermann, M.D.Catonsville, MD 212281518955764
- Sneh Dhannawat, MDBaltimore, MD 212291124434063
- Sharon Gross, M.D.Baltimore, MD 212291144269713
- Connie McRill, M.D.Baltimore, MD 212291235135625
- Jerome Ross, M.D.Baltimore, MD 212291093711418
Common questions
What is John Gambrill, MD's NPI number?
John Gambrill, MD's National Provider Identifier (NPI) is 1710033022, issued on Jan 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Gambrill, MD located?
The NPPES record lists a practice address at 715 Maiden Choice LN, Catonsville, MD, 21228. Phone: (410) 247-5602. Providers update this record themselves, so call before visiting.
How can I verify John Gambrill, MD's license?
NPPES lists Maryland license number D15995, 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 John Gambrill, MD prescribe under Medicare Part D?
In 2024, John Gambrill, MD had 398 Medicare Part D claims for 142 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is John Gambrill, MD's MIPS final score?
The 2023 MIPS final score is 78.5 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.