Harry William Kaplan, MD
Internal Medicine Physician · Baltimore, MD
Harry William Kaplan, MD is an internal medicine physician with a practice address in Baltimore, Maryland, and NPI 1538124631, issued on Apr 20, 2006. Check the license (Maryland D0040371, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Harry William Kaplan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0040371 MD
Self-reported in NPPES; status is on the state search - Practice location
- 2700 Quarry Lake Dr, Baltimore, MD 21209
- Phone
- (410) 653-0073
- Enumerated
- Apr 20, 2006
- Record last updated
- Aug 2, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (410) 653-0064
- Medicaid ID
- 323503300 MD
- Medicare enrollment
- Enrolled (PECOS I20100330001089); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1989
- Entity
- Type 1 · individual
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Verify Harry William Kaplan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0040371Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,681 Medicare Part D claims for 362 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 180 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium345 claims
- Levothyroxine Sodium307 claims
- Losartan Potassium255 claims
- Prednisone245 claims
- Amlodipine Besylate230 claims
- Atorvastatin Calcium211 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): 77.1 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: $7,465.49
96 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Harry William Kaplan among 3,904 internal medicine physician records in Maryland
Harry William Kaplan, MD is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1989 · median 2003 among the 2,445 with a school on file
- Record last updated2011 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,278 internal medicine physician records list a practice address in Baltimore
They are 1,278 of the 35,183 NPPES records with a practice address in Baltimore, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Baltimore → Internal Medicine Physician nationwide →
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- Aaron Goldberg, MDBaltimore, MD 212091104836345
- Howard Goldstein, M.D.Baltimore, MD 212091790747251
- Joyce Gross, M.D.Baltimore, MD 212091073672887
- Michael Levin, MDBaltimore, MD 212091902906753
- Louis Malinow, M.D.Baltimore, MD 212091225007925
Common questions
What is Harry William Kaplan, MD's NPI number?
Harry William Kaplan, MD's National Provider Identifier (NPI) is 1538124631, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harry William Kaplan, MD located?
The NPPES record lists a practice address at 2700 Quarry Lake Dr, Baltimore, MD, 21209. Phone: (410) 653-0073. Providers update this record themselves, so call before visiting.
How can I verify Harry William Kaplan, MD's license?
NPPES lists Maryland license number D0040371, 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 Harry William Kaplan, MD prescribe under Medicare Part D?
In 2024, Harry William Kaplan, MD had 7,681 Medicare Part D claims for 362 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Harry William Kaplan, MD's MIPS final score?
The 2023 MIPS final score is 77.1 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.